The opinion of the court was delivered by
On petition for review, the defendants in this medical malpractice case seek reversal of the Court of Appeals’ determinations that the trial court erred by instructing the jury on intervening cause, the error was not harmless, the jury verdict rendered in the defendants’ favor must be vacated, and the case remanded for retrial. See Puckett v. Mt. Carmel Reg. Med. Center, No. 97,971, unpublished opinion filed September 19, 2008. We affirm the Court of Appeals’ decision, reverse the jury verdict, and remand the case with directions for a new trial.
Factual and Procedural Background
On June 15, 2002, Ronald E. Puckett sought treatment for severe back pain at the emergency room of Mt. Carmel Regional *410 Medical Center (Mt. Carmel) in Pittsburg, Kansas. Ronald was seen by Dr. Ronald Seglie, who examined him and prescribed pain medication and a muscle relaxer.
Four days later, Ronald still had pain in his lower back and was also running a fever. He sought treatment at a clinic operated by Mt. Carmel where he was treated by Barbara Deruy, an advanced registered nurse practitioner (A.R.N.P.), who worked at the clinic under a collaborative practice agreement that required a supervising physician be within 50 miles. Nurse Deruy had previously treated Ronald for chronic back pain when she worked for his family doctor. When Ronald arrived at the clinic, Nurse Deruy noted that Ronald was moving very slowly and with great difficulty. Ronald indicated he had been running a fever that morning, but his chief complaint was the back pain. He had taken some medication containing acetaminophen before seeing Nurse Deruy and did not have a fever at the time of his visit. Nurse Deruy observed Ronald’s reddened ears and throat, as well as nasal congestion, which she attributed to a viral infection, and made a differential diagnosis of low back pain and a viral syndrome. Nurse Deruy changed Ronald’s prescription muscle relaxant and told him to report to the emergency room if his symptoms got worse.
Ronald’s symptoms did worsen over the next 2 days; he became confused and disoriented. On June 21, 2002, he was transported by ambulance to Hospital District No. 1 (Girard Hospital), was admitted, and was placed in the intensive care unit under the treatment of Dr. Adam Paoni, a board-certified physician in the area of family practice. Following a regimen of antibiotics to treat a urinary tract bacterial infection, Ronald initially improved. Unfortunately, his condition soon deteriorated and he developed respiratory distress. On June 23, 2002, Dr. Paoni transferred Ronald to St. John’s Hospital (St. John’s) in Joplin, Missouri, a larger “tertiary care” facility, where he could receive more specialized care, including long-term respiratory assistance, for sepsis that had developed from the bacterial infection.
At St. John’s, Ronald was placed under the care of Dr. Habib Munshi, a physician board certified in the areas of pulmonary diseases, critical care medicine, and sleep disorders. Dr. Munshi de *411 scribed Ronald’s status as “in extremis ,” meaning his whole system was severely unstable, the situation was “very critical,” and he was at considerable risk of dying. Dr. Munshi stated at trial that considering the fact that Ronald “had several days of treatment and he still was in this situation, his prognosis for recovery was not veiy good.” Ronald’s white blood cefl count was high, his heart rate was elevated, and he had severe respiratory problems. Dr. Munshi had to choose a method of providing respiratory assistance. He treated Ronald’s respiratory distress with a bilevel positive air pressure (BiPAP) face mask rather than a ventilator, since he believed Ronald’s medical condition was too perilous to attempt the intubation required if a ventilator was utilized. Dr. Munshi testified that Ronald had no contraindication to the use of the BiPAP mask.
On the morning of June 25, 2002, Dr. Munshi visited Ronald, who remained critically ill. For medical reasons and patient comfort, Dr. Munshi ordered the temporary removal of the BiPAP mask and the use of an oxygen mask. While the BiPAP mask was removed, Ronald sat up in bed and ate some breakfast. After approximately 3 hours, Ronald was placed back on the BiPAP mask. Soon thereafter Ronald went into cardiac arrest. Ronald had stopped breathing after having vomited and aspirated. His cardiac and pulmonary functions were restored, but he never fully regained consciousness.
Ronald died on August 6,2002. The death certificate listed Ronald’s cause of death as “anoxic encephalopathy,” which basically means “there was a disease process of the brain that . . . resulted from lack of oxygen to the brain.” Significant conditions listed as contributing to his death were sepsis, diabetes, and respiratory failure. At trial, Dr. Munshi opined that despite Ronald’s receiving low oxygen, he would have expected him to recover but because of “underlying primary insults” — severe sepsis and major organ failure — his “coding” was “part of the underlying process.”
Susan E. Puckett, the widow and special administrator of Ronald’s estate, brought wrongful death and survivor actions against Mt. Carmel, Nurse Deruy (Mt. Carmel and Nurse Deruy will be referred to collectively as Nurse Deruy), and Dr. Paoni on the basis of medical malpractice. Susan alleged that Nurse Deruy was neg *412 ligent in (1) failing to properly diagnose and treat Ronald’s urinary tract infection that developed into sepsis after going untreated; (2) failing to obtain and review Ronald’s medical chart; (3) failing to order a complete blood count and urinalysis; (4) failing to obtain a proper history; and (5) practicing outside her specialty. Susan alleged that Dr. Paoni was negligent in (1) failing to realize the severity of Ronald’s condition; (2) failing to realize Ronald was having, or was at risk of having, multiple-system organ failure that could not be treated at Girard Hospital; and (3) failing to timely transfer Ronald to a facility where he could receive more specialized care.
In response, both Nurse Deruy and Dr. Paoni denied individual fault and raised the affirmative defense of comparative fault between the parties and Dr. Munshi. They alleged that Dr. Munshi, who is not a Kansas resident and is not a party to this lawsuit, was at fault for placing Ronald on the BiPAP mask instead of a ventilator. More specifically, they claimed Dr. Munshi failed to provide ventilation with a secure airway, resulting in Ronald’s vomiting, aspirating, and cardiac arrest that led to his death. In the alternative, Nurse Demy and Dr. Paoni claimed there was a superseding, intervening cause, which they now characterize as the “aspirating event,” that relieved them of any liability.
The trial became a battle of the experts. Dueling opinions were admitted regarding whether Nurse Demy and Dr. Paoni violated their respective standards of care and also whether Dr. Munshi was negligent. In addition, many of the experts offered opinions relating to causation, some suggesting Nurse Deruy’s and Dr. Paoni’s negligence caused or exacerbated Ronald’s sepsis and others suggesting the severity of his illness was not the result of their actions or inactions. Primarily, the various defense expert opinions related to two of the defense theories — that Nurse Deray and Dr. Paoni did not deviate from their applicable standards of care and that any negligence was attributable to Dr. Munshi or, at least, his negligence had to be compared to the negligence of Nurse Demy and Dr. Paoni, if any. Other opinions related to Nurse Demy’s and Dr. Paoni’s final theory of defense, i.e., whether a superseding, intervening event caused Susan’s damages.
*413 As to the intervening cause defense, Ronald’s treating physician at the time of death testified that Ronald’s aspiration caused his anoxic brain injuiy and cardiac arrest. Plaintiff s expert, Dr. Larry Rumans, gave similar testimony. In addition, Nurse Deruy’s and Dr. Paoni’s experts focused on the aspiration event as the cause of death. For example, one of Dr. Paoni’s expert’s, Dr. David Mc-Kinsey, opined that Ronald’s death “resulted from complications of aspiration” and “the reason he aspirated is he had a whole lot of fluid in his stomach and I can’t blame that on the sepsis.” Dr. McKinsey further opined that had Ronald not aspirated at St. John’s, it was more likely than not he would have survived.
Another defense expert, Dr. Wade Williams — board certified in the areas of internal, pulmonary, and critical care medicine — • opined that Dr. Paoni’s treatment of Ronald met the applicable standard of care but Dr. Munshi’s did not. Specifically, in his opinion, Dr. Munshi should have intubated Ronald and placed him on a ventilator. Dr. Williams addressed causation as well, observing it was foreseeable that a patient with sepsis would need respiratory assistance. Nevertheless, Dr. Munshi had a choice of using a positive air pressure (PAP) device or intubation and, although PAP is used “quite often,” it was not an appropriate treatment for Ronald, in Dr. Williams’ opinion. Dr. Williams believed it was “fairly unlikely” that Ronald’s sepsis led to his vomiting and aspiration. Rather, Dr. Williams stated that the use of the BiPAP mask caused pressure resulting in gastric distention and vomiting. Dr. Williams thought Ronald would not have suffered brain injury and death if he had been placed on a ventilator; it was an “iatrogenic complication,” i.e., a medically induced complication, that ultimately resulted in Ronald’s cardiac arrest. Nevertheless, Dr. Williams also testified that the use of BiPAP treatment is fairly common and is also fairly common in situations where patients have eaten.
Based on the opinions regarding Dr. Munshi’s negligence in placing Ronald on the BiPAP mask and the causal relationship that decision had in Ronald’s death, Nurse Deruy and Dr. Paoni proposed both comparative negligence and intervening cause jury instructions. They contended the intervening cause instruction was proper because the jury could have found they were negligent and *414 still have concluded that Ronald’s aspiration constituted an independent intervening cause, breaking the causal connection between Nurse Deruy’s and Dr. Paoni’s alleged negligence and Ronald’s death. Over Susan’s objection, the trial court instructed the jury on intervening cause, finding this was a case where “there could very well be an intervening cause[,] and that intervening cause is [that Ronald] aspirated in his mask due to the negligence of Dr. Munshi or not due to the negligence of Dr. Munshi.” The trial court further indicated that, in this case, foreseeability was a matter of law.
After brief deliberations, the jury returned a verdict in favor of Nurse Deruy and Dr. Paoni, and Susan appealed. She contended the trial court erred in instructing the jury, in the jury selection process, and in refusing to admit standard of care testimony from Nurse Deruy.
Court of Appeals
The Court of Appeals found error in the trial court’s decision to give an intervening cause instruction and found that error to be reversible. In reaching this conclusion, the Court of Appeals cited Kansas cases that indicate intervening cause cuts off liability for earlier negligence only in “extraordinary” cases. Puckett, slip op. at 9. The Court of Appeals noted that “[i]f the original actor reasonably should have foreseen the intervening act in light of the attendant circumstances, the original actor’s negligence remains a proximate cause of the injury. [Citation omitted.]” Puckett, slip op. at 9. Applying this principle, the Court of Appeals focused on the issue of whether Dr. Munshi’s alleged negligence was reasonably foreseeable by Nurse Deruy and Dr. Paoni.
Finding that the evidence established that respiratory problems commonly result from sepsis, the Court of Appeals concluded it was foreseeable that Ronald would develop respiratory difficulties if untreated. Also foreseeable was the fact that a later treating physician would elect the BiPAP mask among various methods in assisting Ronald. Given the extraordinary nature of an intervening cause case, the Court of Appeals examined the expert medical testimony to determine if the evidence showed that Dr. Munshi’s care *415 of Ronald was not only negligent, but also “so beyond the pale that it would not be foreseeable by Ronald’s earlier medical providers.” Puckett, slip op. at 11. According to the Court of Appeals, there was expert testimony that Dr. Munshi breached the applicable standard of care; however, no defense expert opined that Dr. Mun-shi’s care was so deficient that it could not have been anticipated. Because there was “no evidence that Dr. Munshi’s actions were so extraordinaiy or unusual as to break the causal connection between the claimed negligence of Nurse Deruy and Dr. Paoni and Ronald’s eventual death,” the panel concluded that this was not a case of intervening cause. Puckett, slip op. at 11.
The Court of Appeals rejected Nurse Deruy’s and Dr. Paoni’s alternative argument that even if it was error to instruct the jury on intervening cause, the error was harmless because the jury found no fault on the part of either defendant. The Court of Appeals pointed out that the concept of an intervening cause had no bearing on the claims made in the survivor action. The survivor action dealt with the issue of injuries and damages suffered by Ronald before his transfer to Dr. Munshi’s care at St. John’s. Yet the verdict form failed to distinguish the survivor action (brought by Susan as administrator of Ronald’s estate) from the separate wrongful death action (brought by Susan as heir at law), and the parties failed to distinguish the separate claims of wrongful death and survivorship in their closing arguments.
With respect to the survivor action, the Court of Appeals observed that if the juiy found either Nurse Deruy or Dr. Paoni negligent but also found that the intervening negligence of Dr. Munshi broke the causal connection between the negligence and Ronald’s death, there was no way for the jury to enter a judgment in favor of Susan for any injuries or damages Ronald sustained before being transferred to St. John’s. Rather, the verdict form was set up so that the jury had to first answer whether either Nurse Deruy or Dr. Paoni was at fault, and only if the question was answered in the affirmative was the jury to proceed in comparing the fault of Nurse Deruy, Dr. Paoni, and Dr. Munshi. If the jury found there was an intervening cause, the jury would answer the first question in the negative, finding no fault on the part of either *416 Nurse Demy or Dr. Paoni, and would not reach the issue of comparative fault. In fact, the jury did answer the first question in the negative.
With regard to the wrongful death claim, the Court of Appeals pointed out that the jury had to determine more than whether either Nurse Demy or Dr. Paoni deviated from the applicable standards of care; they also had to determine whether those deviations brought about Ronald’s death. Given that, the Court of Appeals emphasized there were three possible explanations for the jury’s no-fault finding:
“(1) Neither Deruy nor Dr. Paoni breached die applicable standard of care, (2) Deruy and/or Dr. Paoni breached the applicable standard of care but did not cause Ronald’s death, or (3) Deruy and Dr. Paoni breached the applicable standard of care but their fault was interrupted by the intervening negligence of Dr. Munshi who caused Ronald’s death.” Puckett, slip op. at 13.
Nurse Demy and Dr. Paoni argued that there was evidentiary support for explanations (1) and (2), so the jury could have resolved the case without considering the intervening cause instmction. But the Court of Appeals found it impossible to determine whether the juiy followed the intervening cause instmction when rendering its verdict or if the jury decided the case without reference to it. Con-sequendy, the Court of Appeals concluded that the trial court’s error in giving the intervening cause instruction was not harmless. Puckett, slip op. at 13-14.
Based on its ruling, the panel declared Susan’s remaining issues moot and reversed and remanded the case for a new trial. Puckett, slip op. at 14.
Petition For Review
Nurse Demy and Dr. Paoni filed petitions for review, arguing that the trial court properly gave an intervening cause instmction because they raised alternate theories of defense — no fault, comparative fault, and intervening cause — which were supported by the evidence and required presentation to the jury. They contend that the Court of Appeals’ decision essentially eliminates the possibility that a health care provider could ever simultaneously raise the alternate defense theories of comparative fault and intervening *417 cause. In addition, Nurse Deruy and Dr. Paoni contend that the trial court did not err by giving a jury instruction on intervening cause because there was sufficient material evidence to support the intervening cause defense. They argue that in concluding the case did not fit the theory of an intervening cause and finding reversible error in the giving of an intervening cause instruction, the Court of Appeals failed to address one nuance of their intervening cause defense theory — specifically, that the aspiration event, triggered by nonnegligent actions of Dr. Munshi, was the intervening cause of Ronald’s death. Thus, Nurse Deruy and Dr. Paoni contend the Court of Appeals failed to “comprehend” their alternate defense theories and issued an erroneous decision. Nurse Deruy and Dr. Paoni also argue, in the alternative, that giving an intervening cause instruction in this case was harmless, if it was error.
Susan contends the alternative defense of nonnegligent intervening cause was not argued. The record reveals, however, that Nurse Deruy and Dr. Paoni raised three alternate theories of defense — no fault, comparative fault, and intervening cause — during the closing arguments, and the trial court recognized the intervening cause theory as being based on assertions of negligent conduct by Dr. Munshi and on nonnegligent conduct. We know this because the trial court, when ruling on Susan’s objection to the intervening cause instruction, stated, “[T]here could very well be an intervening causef,] and that intervening cause is [that Ronald] aspirated in his mask due to the negligence of Dr. Munshi or not due to the negligence of Dr. Munshi.”
Regardless, Susan also counters that the Court of Appeals correctly applied the law in finding there was no factual basis on which to give an intervening cause instruction. She urges this court to affirm the Court of Appeals’ decision.
This court’s jurisdiction arises from K.S.A. 20-3018(b).
Standard of Review
Two standards are implicated by the issues raised in our review of the Court of Appeals’ decision. The threshold standard is the one used by the trial court to determine whether a jury instruction *418 should be given. The second standard applies to an appellate court’s review of the trial court’s decision regarding whether to give an instruction. In discussing these standards, the parties cite several versions, each supported by case law of this court.
Under one variation of the standard for a trial court’s determination of whether to give an instruction, some cases broadly indicate a court must instruct the jury on a party’s theory of the case.
E.g., Wood v. Groh,
There is yet another variation that sets a slighdy higher eviden-tiary standard. Under this standard, a trial court must instruct on a party’s theory if “ ‘reasonable minds might reach different conclusions’ ” based on “ ‘the evidence and all inferences that may reasonably be drawn therefrom.’ ”
Pizel v. Whalen,
As we consider these variations of the standard for giving an instruction on a party’s theory in a civil case, we conclude
Pizel’s
holding is a more complete and accurate statement.
Pizel,
The next question is: What standard applies when an appellate court reviews the trial court’s determination? The first consideration is whether there was an objection to the giving or failure to give an instruction. If there was not, the objection is waived unless the instruction is clearly erroneous. K.S.A. 60-251(b). Here, Susan made a timely and specific objection.
Given this determination, we turn to
Cox,
where this court cited
Pizel
in concluding an appellate court applies the same standard as a district court when considering whether an instruction should be given on a party’s theory of the case.
Cox,
We must apply these standards to the parties’ arguments which implicate questions of whether the intervening cause instruction fairly reflected the law and whether it should have been given under the facts of the case. We begin our discussion with the question of whether the instructions fairly reflected the law. In turn, this discussion will frame our consideration of whether the instruction should have been given under the facts of this case.
*420 Law Related to Causation and Intervening Cause
In order to establish a claim based on medical malpractice, a plaintiff must establish: (1) The health care provider owes the patient a duty of care and was required to meet or exceed a certain standard of care to protect the patient from injury; (2) the health care provider breached this duty or deviated from the applicable standard of care; (3) the patient was injured; and (4) the injury proximately resulted from the health care provider s breach of the standard of care. See
Hale v. Brown,
The focus of this appeal is the fourth element — proximate cause. Kansas follows the traditional concept of proximate cause,
i.e.,
“[individuals are not responsible for all
possible
consequences of their negligence, but only those consequences that are
probable
according to ordinaiy and usual experience.”
Hale,
This traditional statement of proximate cause incorporates concepts that fall into two categories: causation in fact and legal causation. See,
e.g., Corder v. Kansas Board of Healing Arts,
An intervening cause is “one which actively operates in producing harm to another after the actor’s negligent act or omission has been committed.” Restatement (Second) of Torts § 441 (1964). An intervening cause absolves a defendant of liability only if it supersedes the defendant’s negligence. In other words, the superseding and intervening cause “component breaks the connection between the initial negligent act and the harm caused.”
Hale,
All of these concepts are incorporated into the Pattern Instructions for Kansas (PIK), specifically PIK Civ. 4th 104.03, which was given in this case as Instruction 11:
“Instruction 11
“If an injury arises from two distinct causes which are independent and unrelated, then the causes are not concurrent. Consideration then must be given to the question of whether the causal connection between the conduct of the party responsible for the first cause and the injury was broken by the intervention of a new, independent cause which acting alone would have been sufficient to have caused the injury. If so, the person responsible for the first cause would not be at fault. If, however, the intervening cause was foreseen or should reasonably have been foreseen by the person responsible for the first cause, then such person’s *422 conduct would be the cause of the injury, notwithstanding the intervening cause, and he or she would be at fault.”
See
Tinkler v. United States by F.A.A.,
The parties’ arguments do not attack these well-setded principles but raise questions about how these principles mesh with comparative negligence. Specifically, Nurse Deruy and Dr. Paoni argue the Court of Appeals’ analysis is contrary to comparative fault principles.
Intervening Cause and Comparative Negligence
First, Nurse Deruy and Dr. Paoni ask us to determine whether intervening cause — a common-law liability shifting device — continues to be valid when Kansas’ comparative negligence statute— another form of a liability shifting device — applies. They contend that the Court of Appeals’ decision alters these principles and, in effect, prohibits defendants from simultaneously raising the affirmative defense of intervening cause and the defense of comparative fault. We disagree with Nurse Deruy’s and Dr. Paoni’s proposition that the Court of Appeals established such a narrow rule of law. Instead, the Court of Appeals merely determined that the intervening cause doctrine did not apply under the facts of this case.
Moreover, in
Hale,
this court recently settled the question of whether the adoption of comparative negligence in Kansas rendered it unnecessary to determine whether a party’s negligence was the proximate cause of injuries to a plaintiff. In so doing, the court rejected the contention that the legal proceeding, without regard to proximate cause, determines the percentage of causation attributable to the various parties.
Hale,
In addition, intervening cause survives the adoption of comparative negligence because nonnegligent conduct can be an intervening cause. For example, intentional tortious conduct, criminal acts of third parties, and forces of nature can be intervening causes. See,
e.g., Llewellyn v. City of Knoxville,
Kansas precedent, bolstered by persuasive authority from other jurisdictions, leads to the conclusion that the existence of comparative fault in our state does not automatically preclude a party from simultaneously raising the theory of intervening cause.
Fieser
Next, Nurse Deruy and Dr. Paoni raise a question about the interplay of Kansas law regarding foreseeability and comparative negligence. This question arises in the context of Nurse Deruy’s and Dr. Paoni’s argument that the Court of Appeals erred in relying on
Fieser v. St. Francis Hospital & School of Nursing, Inc.,
212
*424
Kan. 35, 39,
The Court of Appeals relied on Fieser for the proposition that a tortfeasor who caused the initial injury is hable for “any additional bodily harm resulting from normal efforts of third parties in rendering aid which the injury reasonably requires, irrespective of whether such acts are done in a proper or negligent manner.” Puckett, slip op. at 10. The holding in Fieser reflects Restatement (Second) of Torts § 457 (1964), which states:
“If the negligent actor is liable for another’s bodily injury, he is also subject to liability for any additional bodily harm resulting from normal efforts of third persons in rendering aid which the other’s injury reasonably requires, irrespective of whether such acts are done in a proper or a negligent manner.”
The defendants argue this view cannot be reconciled with comparative negligence principles and, as they correctly observe, Fieser predates the 1974 adoption of Kansas’ comparative negligence statute, K.S.A. 60-258a; L. 1974, ch. 239, sec. 1. They further suggest that the more accurate statement under Kansas law, at least in comparative negligence cases, is reflected in PIK Civ. 4th 171.04, which reads:
“If plaintiff sustained personal injury as a result of defendant’s negligence, then plaintiff may recover damages from defendant for any additional harm which resulted from the efforts of (other persons) (a treating physician) to render aid to plaintiff, so long as those efforts were not performed in a negligent manner.”
The PIK committee’s Notes on Use indicate the pattern instruction was revised from the precomparative negligence version by removing any reference to negligent actions, making the original tortfeasor liable for damages by a subsequent treating physician only if the subsequent treatment was not negligent. The committee explained:
“Before the advent of comparative fault, a negligent party could be held hable for original injuries aggravated by subsequent medical treatment irrespective of whether that treatment was done in a proper manner. Fieser v. St. Francis Hospital & School of Nursing, Inc.,212 Kan. 35 ,510 P.2d 145 (1973), and Keown v. Young,129 Kan. 563 ,283 P. 511 (1930).
“Under comparative fault, all parties to an occurrence must have their fault determined in one action. Brown v. Keill,224 Kan. 195 , 207,580 P.2d 867 (1978).
*425 “In Teepak, Inc. v. Learned,237 Kan. 320 ,699 P.2d 35 (1985), the Supreme Court applied the one-action rule to successive tortfeasors. Consequently it was necessary to limit this instruction to those situations wherein the additional harm was done in a non-negligent manner.” PIK Civil 4th 171.04, Comment.
See
Dodge City Implement, Inc. v. Board of Barber County Comm’rs,
We agree with the PIK committee’s assessment that the adoption of comparative negligence requires a modification of the application of Restatement (Second) of Torts § 457 in cases where comparative negligence principles apply. But see
State v. Mays,
Foreseeability
Nevertheless, the theoretical basis for Restatement § 457 — that the potential of negligence by subsequent treating health care providers is foreseeable — is not altered by the application of comparative negligence. This concept was recently discussed in
Cramer v. Slater,
In
Cramer,
The reasoning of the Idaho Supreme Court’s
Cramer
decision is persuasive and consistent with other courts that generally view the negligence of subsequent health care providers as a concurring, rather than intervening, cause. The Virginia case of
Williams v. Le,
One defense raised by the radiologist was that the subsequent negligence of the patient’s treating physician (in failing to check the diagnostic report) completely broke the chain of events between the radiologist’s negligence and the patient’s death. Based on that theory, the trial court gave an intervening cause instruction.
On appeal, the Virginia Supreme Court concluded that the trial court erred in giving the intervening cause instruction. The court pointed out that there may be more than one proximate cause of an event. In explaining that a subsequent proximate cause may or may not reheve a defendant of liability for his or her negligence, the court reiterated the following rule: “ Tn order to relieve .a defendant of liability for [a] negligent act, the negligence intervening
*427
between the defendant’s negligent act and the injury must so entirely supersede the operation of the defendant’s negligence that it alone, without any contributing negligence by the defendant in the slightest degree, causes the injury.’ [Citations omitted.]”
Williams,
Other jurisdictions have looked at multiple causation injuries and have also evaluated whether the first actor’s negligent conduct actively and continuously operated to bring about harm to another under the principles stated in Restatement (Second) of Torts § 439 (1964), which provides:
“If effects of the actor’s negligent conduct actively and continuously operate to bring about harm to another, the fact that the active and substantially simultaneous operation of the effects of a third person’s innocent, tortious, or criminal act is also a substantial factor in bringing about the harm does not protect the actor from liability.”
Numerous cases within a medical malpractice setting illustrate that a health care provider’s negligence may act with the effects of care provided by subsequent providers to bring about harm for which the initial provider remains hable or, at least, comparatively hable. See
Brillant v. Royal,
Kansas law is consistent with these cases. In fact, these principles were explained to the jury in this case in Instruction 10, which followed PIK Civ. 4th 104.02 and stated:
“There may be more than one cause of an injury; that is, there may be concurrent causes, occurring independently or together, which combine to produce the injury. A cause is concurrent if it was operative at the moment of injury and acted with another cause to produce the injury.
“Concurrent causes do not always occur simultaneously. One cause may be continuous in operation and join with another cause occurring at a later time.
“When the concurring negligence of two or more persons causes an injury, each such person is at fault.
“If the negligence of only one person is the cause of the injury, then he or she alone is at fault.”
*429
These principles were applied in
Cassity v. Brady,
“The omission of the two defendants were so related in point of time and interwoven that the resultant injury to the plaintiff was such that the omission on the part of each continued up until the time or date of the injury. In our opinion, the omission of each of the defendants concurred in producing the resultant injury to the plaintiff.” Cassity,182 Kan. at 386 .
Although the rules of joint and several liability discussed in that case have been altered by the adoption of comparative negligence, the principles of proximate cause have not. Hence, if negligent actions by one health care provider conjoin with other causes— whether the result of negligence or not — to bring about an injury, the health care provider may still be comparatively hable.
This does not mean that there cannot be an intervening cause, however. We agree with Nurse Deruy and Dr. Paoni that Restatement § 457 should not be read to totally eliminate the possibility of an intervening cause in a medical malpractice case, whether the alleged intervening cause is negligent or nonnegligent. Rather, as our Court of Appeals stated in
Barkley v. Freeman,
The extraordinary nature of an intervening cause is illustrated in two Tennessee Court of Appeals cases relied on by Nurse Deruy and Dr.
Paoni
— Godbee,
In Godbee, the patient in a medical malpractice action challenged the trial court’s decision to give a superseding cause instruction along with instructions regarding proximate cause and comparative fault. The patient had sued her orthopedic surgeon for his alleged negligence in failing to recognize her spinal stenosis and in performing the incorrect surgical procedure. She further alleged that the surgeon s negligence caused her to develop arachnoiditis, a condition involving hyperinflammation of the nerve roots.
The surgeon argued that evidence of the patient’s preexisting disc degeneration and evidence of subsequently performed tests and procedures formed the proper foundation for an instruction on superseding cause. The Tennessee Court of Appeals disagreed, concluding that a superseding cause instruction was not appropriate under the facts of its case. The court stated that while the superseding cause doctrine has survived the adoption of comparative fault and is not limited to negligent acts of third parties, the question of whether Godbee’s arachnoiditis resulted from the surgery performed by the orthopedic surgeon or whether the condition was simply the natural progression of preexisting degenerative disc disease related to cause in fact. Consequently, there was a basis for giving a standard jury instruction on proximate cause but not for superseding cause.
Godbee,
In coming to this conclusion, the
Godbee
court referred to a case from the New Mexico Court of Appeals,
Chamberland v. Roswell Osteopathic Clinic,
When Chamberland sued the clinic for malpractice, the defendant asserted that appendicitis was not detectable during the time that the clinic’s doctors treated Chamberland and the subsequent intervention of the appendicitis constituted an “independent intervening cause.”
Chamberland,
The New Mexico Court of Appeals determined that the evidence demonstrated no more than a simple dispute over causation in fact,
i.e.,
whether the clinic’s negligence did or did not cause in fact the injuries suffered by the patient. The appellate court explained that “[w]ithout some initial tortious act or omission by a defendant that precipitates the plaintiff s ultimate injury, subsequent causes and their injuries cannot ‘intervene.’ ”
Chamberland,
The
Chamberland
court determined that the dispute in its case “illuminate[d] the distinction between a true independent intervening cause and a mere dispute over causation in fact without an independent intervening cause.”
Chamberland,
Other than supporting the argument that an intervening cause can arise in a medical malpractice context, we fail to see how
God-bee
or the case on which it
relied
— Chamberland—lends support to Nurse Deruy and Dr. Paoni. In this case, there was a question of whether an infection was present at the time Nurse Deruy examined and treated Ronald. And there was a question of whether Nurse Deruy and Dr. Paoni failed to realize the gravity of his medical condition, failed to diagnose his condition, and were negligent in their treatment or lack thereof. These issues go to the cause in fact of Ronald’s injuries. See
Cagnolatti v. Hightower,
Nor does the second case from the Tennessee Court of Appeals cited by Nurse Deruy and Dr.
Paoni
— White,
In other words, testimony established the type of care that was foreseeable in an ICU and, conversely, established it was not foreseeable that ICU nurses and respiratory therapists would ignore several hours of risky pressure readings and alarms. The negligence was so extraordinary it was distinguishable from situations where ordinary negligence by subsequent health care providers is foreseeable.
Evidence in This Case
Although Nurse Deruy and Dr. Paoni did not cite White in their briefs before the Court of Appeals and, therefore, the court did not address that decision, it considered similar principles regarding intervening cause and applied them to the facts of this case. The Court of Appeals concluded there was no evidence to support the theory that subsequent negligence was not foreseeable. The Court of Appeals noted there was “clear expert testimony that Dr. Mun-shi breached the applicable standard of care. Nevertheless, no medical expert for defendants opined that Dr. Munshf s care was so deficient that the defendants could not anticipate it.” Puckett, slip op. at 11.
*434
On review, Nurse Deruy and Dr. Paoni argue the Court of Appeals reweighed the evidence, which they point out the Tennessee Court of Appeals stated in
White
it could not do. Indeed, this court has stated that “ ‘[w]hether risk of harm is reasonably foreseeable is a question to be determined by the trier of facts. Only when reasonable persons could arrive at but one conclusion may the court determine the question as a matter of law.’ [Citations omitted.]”
Nero v. Kansas State University,
“Although the use of the BiPAP mask was foreseeable, it was the replacement of the BiPAP on Mr. Puckett after his stomach had become full of fluid and was not emptying well from a cause totally unrelated to sepsis that was not reasonably foreseeable by defendant, and there was evidence adduced to that effect. Although some risk of aspiration might have been forseeable, aspiration from this cause was not.”
In support of their contention, Nurse Deruy and Dr. Paoni point to the testimony of defense expert Dr. McKinsey who opined that Ronald’s “death was from aspiration, not from bacteremia.” Dr. McKinsey also opined that sepsis caused the respiratory distress. Rut he stated that “the reason [Ronald] aspirated is he had a whole lot of fluid in his stomach and I can’t blame that on the sepsis.” When asked why Ronald, who was a diabetic, had fluid on his stomach, Dr. McKinsey stated it “must have been from something that he ate or drank and presumably his stomach was not emptying as well as [it] should” because of “[a]n acute illness in general or an operation, diabetes.” He explained further that Ronald “had a whole lot of fluid in his abdomen and he was being treated with a positive pressure face mask which provided oxygen and also increased pressure in his stomach. So it seems to me that the reason he aspirated is he had a stomach full of fluid under pressure.” When asked why he was on the positive pressure face mask, Dr. McKinsey answered: “The sepsis itself and then the fluids that are necessary to treat the sepsis.”
*435 In other words, Dr. McKinsey s testimony established a cause in fact relationship between the treatment of the sepsis and Ronald’s death. The connection can be traced through the following connections: (1) Ronald’s infection or bacteremia, which Nurse Deruy and Dr. Paoni allegedly failed to properly diagnose and treat, caused systemic inflammatory response syndrome or sepsis that became severe; (2) the sepsis was treated with fluids; (3) sepsis and fluid retention led to Ronald’s respiratory distress; (4) Ronald’s respiratory distress required respiratory care, and one method of treatment is a BiPAP mask; (5) a BiPAP mask can cause pressure on the stomach; and (6) aspiration can result from “a stomach full of fluid under pressure.” Hence, according to Dr. McKinsey, no single factor, including the sepsis, caused the aspiration event. Rather, various causes contributed to causing the aspiration that was triggered when Ronald was placed back on the BiPAP mask. In light of the concurring causes, the issue for the jury was whether Nurse Deruy and Dr. Paoni committed negligence that was the cause in fact of the need to use some form of respiratory assistance that led to the foreseeable use of the BiPAP mask. If that cause in fact was established, Dr. McKinsey connects Nurse Deruy’s and Dr. Paoni’s acts or omissions with the other causes of the aspiration event. His testimony thus does not provide evidence on which a reasonable jury could find a superseding, intervening cause.
Further, even if we were to accept that the evidence was sufficient to create a juiy question on whether there was a superseding, intervening cause, there must also be evidence that such cause was not foreseeable. In this case, that question was whether the aspiration event was reasonably foreseeable to Nurse Deruy and Dr. Paoni, who obviously are health care providers and would be foreseeing the potential course of treatment of a patient and that treatment’s potential risks. These are matters beyond the common knowledge of a lay jury and would require expert testimony. In
Hare v. Wendler,
Dr. McKinsey did not directly address whether it was foreseeable that a patient would be placed back on the BiPAP mask after eating. Dr. Williams, another defense expert, did however.
Dr. Williams agreed with Dr. McKinsey that Ronald’s death resulted from aspiration. He explained that without the aspiration Ronald would not have suffered cardiac arrest or anoxic brain injury. In his opinion, Ronald’s death was due to the fact that Ronald was on the BiPAP mask, developed gastric distention, vomited, and aspirated the vomit which caused an obstruction in his airway. In turn, the obstruction caused Ronald’s oxygen level to drop and the lower oxygen levels resulted in cardiac arrest. Dr. Williams testified it was foreseeable that a patient with sepsis would need respiratory assistance and in such a case the choice was either a PAP device or intubation. While he faulted Dr. Munshi for using the BiPAP instead of a ventilator, he agreed that the use of a BiPAP mask was “fairly common” and it was “fairly common” to allow patients to eat while they were on a BiPAP mask. Dr. Williams also testified a recognized risk of using a PAP device was aspiration.
Hence, the only expert testimony before the juiy about the likelihood of using the BiPAP mask and using the BiPAP mask after eating was that it was “fairly common.” Further, the evidence was clear and uncontested that aspiration was a known risk of using the BiPAP mask.
This conclusion is not reached by reweighing evidence but looking for any evidence which can be viewed in a light favorable to Nurse Deruy’s and Dr. Paoni’s position. We have examined tire record as a whole and given special attention to each of the record citations given by Nurse Deruy and Dr. Paoni. We find no evidence supporting a conclusion that the aspiration event was not foreseeable. Hence, whether the aspiration resulted from negligence or not, it was a foreseeable consequence of the treatment alleged to *437 have been necessitated by Nurse Deruy’s and Dr. Paoni’s alleged negbgence. Thus, considering the evidence in a light most favorable to Nurse Deruy and Dr. Paoni, we determine that the Court of Appeals correctly concluded this case is not one of extraordinary circumstances where an intervening cause instruction should have been given.
Harmless Error Analysis
Nurse Deruy and Dr. Paoni contend that even if the trial court erred by giving an intervening cause instruction, the error was harmless because the jury found no fault on the part of either Nurse Deruy or Dr. Paoni. They cite our oft-stated harmless error standard, under which the instructions “are to be considered together and read as a whole, and where they fairly instruct the jury on the law governing the case, error in an isolated instruction may be disregarded as harmless. If the instructions are substantially correct and the juiy could not reasonably have been misled by them, the instructions will be approved on appeal.”
Wood v. Groh,
The Court of Appeals determined it could not find the error harmless. Puckett, slip op. at 14. In reaching this conclusion, the Court of Appeals noted that the jury could answer the first question on the verdict form — whether either Nurse Deruy or Dr. Paoni were at fault — without reaching tire issue of intervening cause. The court noted, however, that knowing “whether the juiy did so demands a level of clairvoyance that we do not enjoy” because the jury might have reached the no-liability conclusion after concluding an intervening cause cut off Nurse Deruy’s and Dr. Paoni’s liability. Puckett, slip op. at 13. Further, the Court of Appeals noted the instructions and verdict form did not explain that the intervening cause would cut off liability only for those damages occurring after the aspiration event. Rather, the instructions and verdict form were misleading in allowing the conclusion that the intervening cause could shift liability entirely. Puckett, slip op. at 12-14.
We agree with the Court of Appeals’ analysis that the instructions were misleading because they suggested an intervening cause could relieve Nurse Deruy and Dr. Paoni of liability for all dam *438 ages, including those incurred before the intervening cause — i.e., the aspiration event. Hence, if we were to accept Nurse Deruy s and Dr. Paoni’s arguments that there was sufficient evidence to support an intervening cause instruction, we would not be able to discern whether the jury had determined Nurse Demy and Dr. Paoni were not at fault because they did not meet the applicable standard of care by finding their negligence did not cause tibe injury or because an intervening cause superseded their negligence. Because of the possibility that the jury based its decision on intervening cause, a remand would be necessary to clarify the limited impact of the intervening cause on liability and damages.
There is a more significant problem, however, because there was no evidence of an intervening cause. Ironically, Nurse Deruy and Dr. Paoni have a stronger argument that there was harmless error in light of the complete lack of evidence because we must presume the jury followed the instmctions. If the jury correctly applied the instmctions, it would not have found there was an intervening cause because there was no evidence to support that finding. See
City of Mission Hills v. Sexton,
Nurse Deruy and Dr. Paoni suggest such a conclusion is appropriate and point us to a case decided by the Texas Court of Appeals,
James v. Kloos,
The
James
court, applying an abuse of discretion standard of review, determined that the trial court erred in giving an intervening cause instruction.
James,
In considering whether the trial court’s decision to instruct the jury on intervening cause was harmless, the
James
court stated: “It is a rare case in which the incorrect inclusion of ‘new and independent cause’ in the jury charge is reversible error. [Citations omitted.] . . . An improper instruction is especially likely to cause an unfair trial when the trial is contested and the evidence is sharply conflicting. [Citation omitted.]”
James,
The
James
court indicated that while there was conflicting evidence on the standard of care, causation, and the circumstances surrounding the underlying event, James failed to identify any evidence in the record suggesting that “the verdict was
probably
a result of the inclusion of the improper instruction.”
James,
*440
There is contrary authority, however, including two out-of-state cases we previously discussed,
Godbee v. Dimick,
“Having determined that the court erred in giving an instruction unsupported by the evidence, prejudice is presumed. As our Supreme Court stated in [citations omitted], ‘[w]e compel the reversal of errors for which the complaining party provides the slightest evidence of prejudice and resolve all doubt in favor of the complaining party.’ The Chamberlands have met their burden by demonstrating that there was no evidence to support the instruction. [Citations omitted.] With prejudice presumed from an instruction unsupported by the evidence, reversal and remand for a new trial is required. We also observe that Defendants alone undertook the risk of demanding an instruction in the face of strenuous objection and questionable support in the record. It has always been the law in New Mexico that ‘after injecting [error] into the case to influence the jury, the [appellee] ought not to be heard to say, after he has secured a conviction, it was harmless.’ [Citation omitted.]” Chamberland,130 N.M. at 538 .
The Nebraska Supreme Court reached the same conclusion of reversible error when an instruction was not supported by any evidence, although it did so under a slightly different analysis. In
Sacco v. Carothers,
“An instruction on a matter not an issue in the litigation distracts the jury from its effort to answer legitimate, factual questions raised during the trial. [Citation omitted.] Submission of an issue on which the evidence is insufficient to sustain *441 an affirmative finding is generally prejudicial and results in a new trial. [Citations omitted.]” Carothers,253 Neb. at 165 .
The view of the Nebraska and New Mexico courts has some support in analogous Kansas cases. First, there is a line of Kansas cases stating that a material error in jury instructions should be presumed prejudicial. Most recently, this standard was applied by the Court of Appeals in a decision we previously mentioned in our discussion regarding foreseeability,
Barkley v. Freeman,
To support this conclusion, the
Barkley
Court of Appeals cited
Van Mol v. Urban Renewal Agency,
Another factor suggests the jury could have been misled by the superseding, intervening cause instruction being given in this case. *442 That factor is the manner in which intervening cause was argued to the juiy. During the closing arguments in this case, there was very little focus on the intervening cause. Nevertheless, when intervening cause was mentioned, it was discussed in a misleading manner. One of the defense attorneys argued:
“We have an independent intervening cause that is going on over here in Joplin. Did Dr. Paoni even know Dr. Munshi was going to be the specialist to see him? Absolutely not. He sent him over to St. John’s, talked to Dr. Dhawan, they direct where he’s going. So does he know what’s going to happen? Absolutely not.”
This argument suggested the intervening cause was not foreseeable because Dr. Paoni did not know the doctor who would treat Ronald. It was not explained that the question was whether Dr. Paoni could foresee that whoever the subsequent treating physician would be would use a BiPAP mask — given Ronald’s condition, which included diabetes, that might cause Ronald’s stomach to not empty. Further, the arguments regarding whether Dr. Munshi’s negligence or some other factor was the intervening cause were confusing. This confusion is made evident by the fact that the parties still squabble over the details of the defense theoiy and whether such details were raised at the trial level.
In addition, a considerable amount of defense expert testimony was dedicated to deflecting fault from Nurse Deruy and Dr. Paoni and placing it on Dr. Munshi and his use of the BiPAP mask. Although Nurse Deruy and Dr. Paoni contend the jury would have only considered any alleged negligence of Dr. Munshi for “comparative fault purposes,” this is not necessarily so. Because of the intervening cause instruction, the jury could still have found Dr. Munshi was negligent and, given the way foreseeabihty was argued, that his negligent actions were “unforeseeable,” interrupting any negligence on the part of Nurse Deruy and Dr. Paoni.
As we consider the evidence, the arguments, and the instructions as a whole, we conclude it is clearly possible and even probable that the jury was confused by its consideration of the intervening cause instruction. The Court of Appeals correctly determined that the erroneous instruction on intervening cause could have misled the jury under the facts and circumstances of this case. Conse *443 quently, the jury verdict is reversed and the case is remanded for a new trial.
Other Issues
The Court of Appeals declined to consider two additional issues raised by Susan: (1) alleged juror bias and (2) the trial court’s decision to prohibit standard of care testimony from Nurse Deruy. In Susan’s “Response to Petition for Review,” she incorporates by reference her arguments raised before the Court of Appeals, and at oral argument, she urged this court to consider the issues in order to provide guidance on remand. See Supreme Court Rule 8.03(c)(3) (2009 Kan. Ct. R. Annot. 68) (“In a civil case, the response also may present for review adverse rulings or decisions of the district court that should be considered by the Supreme Court in the event of a new trial, provided that the respondent raised such issues in the Court of Appeals.”).
We decline to address the question of juror bias because it was unique to the first trial and is not likely to arise on remand. In contrast, the second question is likely to be presented on retrial and, therefore, will be addressed. In presenting this issue, Susan alleges the trial court erred in sustaining a defense objection to the following question asked of Nurse Deruy: ‘Well don’t you agree that if you were there without the supervising doctor present, that you had to meet a doctor’s standard of care?” In addition, before defense counsel objected, the trial court sua sponte interrupted Susan’s counsel from asking, “[I]f you proceeded to treat a patient without consulting with the supervising physician and without calling the supervising physician, you are held to the standard of care under general guidelines, you are held to the standard of care of a physician; isn’t that true?”
The standard of review for questions regarding the admissibility of evidence is a multistep standard. The first question is relevance. K.S.A. 60-401(b) defines relevant evidence as evidence that is probative and material. On appeal, the question of whether evidence is probative is judged under an abuse of discretion standard; materiality is judged under a de novo standard. See
State v. Reid,
Typically the admission of expert testimony is reviewed under an abuse of discretion standard and depends on finding that the testimony will be helpful to the jury.
State v. Cooperwood,
Here, the trial court refused to allow questions that sought an opinion from Nurse Deruy as to the legal standard that applies in a medical malpractice action against her as a nurse practitioner. The applicable legal standard of care is a matter on which the judge would and did provide instructions consistent with PIK Civ. 4th 123.01, which states in part:
“In performing professional services for a patient, [an A.R.N.P.] has a duty to use that degree of learning and sldll ordinarily possessed and used by members of that profession and of that school of medicine in the community in which the [A.R.N.P.] practices, or in similar communities, and under lilce circumstances.”
See also PIK Civ. 4th 123.02 (duty/standard of care of hospital); PIK Civ. 4th 123.12 (duty/standard of care of medical specialist). As the comment to PIK Civ. 4th 123.01 indicates, the factual proof related to whether this legal standard of care has been met “requires two evidentiary steps. It requires evidence as to the recognized standards of the medical community in the particular kind of case, and a showing that the health care provider in question negligently departed from the standard in treating the patient.” PIK Civ. 4th 123.01, Comment.
Asking Nurse Demy whether she believed she must meet the standard of care of a physician crosses or at least blurs the line between the judge’s responsibility to instmct the jury on the applicable legal standard of care and the witness’ opinion as to what *445 level of medical care was appropriate under the circumstances. If a witness testifies as to the legal standard, there is a danger that a juror may turn to the witness’ legal conclusion rather than the judge’s instruction for guidance on the applicable law. As a result, it is generally recognized that testimony expressing a legal conclusion should ordinarily be excluded because such testimony is not the way in which a legal standard should be communicated to the jury. As one federal court stated:
“Even if a jury were not misled into adopting outright a legal conclusion proffered by an expert witness, the testimony would remain objectionable by communicating a legal standard — explicit or implicit — to the jury. See Andrews v. Metro N. Commuter R.R.,882 F.2d 705 , 709 (2d Cir.1989); FAA v. Landy,705 F.2d 624 , 632 (2d Cir.), cert. denied464 U.S. 895 ,104 S.Ct. 243 ,78 L.Ed.2d 232 (1983). Whereas an expert may be uniquely qualified by experience to assist the trier of fact, he is not qualified to compete with the judge in the function of instructing the jury.” Hygh v. Jacobs,961 F.2d 359 , 364 (2d Cir. 1992).
In other words, while Nurse Deruy could be asked about the applicable standard of medical care, it was inappropriate to ask about the legal standard of care, and it was the legal standard that was addressed in the disputed questions. Her testimony on a legal standard of care to be supplied by the trial court would not be helpful to the jury and, in fact, would be confusing. It was not an abuse of discretion to exclude Nurse Deruy’s answers, and the trial court did not err.
The decision of the Court of Appeals reversing the district court is affirmed. The decision of the district court is reversed and remanded with directions.
