Dr. Robert H. Dennis, a plastic surgeon, appeals from a jury verdict in a medical malpractice action. He principally complains that the Superior Court erroneously refused to give a jury instruction on assumption of risk in addition to the contributory negligence instruction which was given. Even assuming the court should have given the requested instruction, its failure to do so was harmless on the record presented. Therefore, we affirm.
I. Factual Background
In February 1999, appellee Hazel Jones began consulting Dr. Dennis about whether plastic surgery could relieve her chronic back pain. Although they discussed breast reduction surgery to relieve the strain on Ms. Jones’s back, she also expressed interest in abdominoplasty — a surgical procedure to reduce the size of the abdomen. At their initial meeting, Dr. Dennis noted that Ms. Jones had high blood pressure, had smoked a quarter pack of cigarettes a day for twenty years, and was more than 100 pounds overweight. Ms. Jones decided not to have breast reduction surgery because she could not afford it, but she chose to undergo abdominoplasty (and carpal tunnel release surgery to address a separate issue). 1
Dr. Dennis performed the surgeries on April 30, 1999, and Ms. Jones went home later that day, but she soon began experiencing significant complications, including difficulty breathing and healing, and infections in her surgical wounds. Ms. Jones was hospitalized on two occasions in May 1999 and underwent two procedures to surgically remove infected tissue. In June 1999 continuing complications caused Dr. Dennis to perform a skin graft on the affected area, and in August 1999 Ms. Jones was diagnosed with Hepatitis C, possibly related to a blood transfusion she received in May.
II. Procedural Background
Ms. Jones filed a complaint against Dr. Dennis on December 28, 2001, claiming negligence and failure to obtain informed consent. Over the course of four days, a jury heard testimony from six witnesses, including the parties and two experts. 2 *675 The primary question raised on appeal stems from a disagreement about what Dr. Dennis told Ms. Jones about the need to quit smoking and what Ms. Jones told him about whether she had followed his advice.
Ms. Jones testified that Dr. Dennis failed to fully advise her that continued smoking, in conjunction with her high blood pressure and obesity, would increase the risk of post-surgery complications, including infection, and difficulty healing and breathing. According to Ms. Jones, Dr. Dennis told her “that he didn’t see where the smoking would be a problem, since [she] didn’t smoke that much.” In fact, she testified that she kept smoking until the date of her surgery. Finally, Ms. Jones said that she “would not have had the surgery” had she known about the increased risks posed by her obesity, smoking, and hypertension, or by undergoing abdominoplasty and liposuction at the same time.
Dr. Dennis maintained that he fully discussed the risks of smoking with Ms. Jones. Indeed, he testified that he explained to her that he would not perform the proposed surgeries on someone who was actively smoking and that he directed her to quit smoking at least a month before the surgery. According to Dr. Dennis, Ms. Jones told him at her April 27 preoperative visit that she had quit smoking earlier that month. Ms. Jones signed a consent form indicating that Dr. Dennis had discussed with her the complications that might arise from abdominoplasty, including those resulting from smoking. However, the doctor conceded that he did not discuss with Ms. Jones the surgical risks associated with obesity, or with a combination of obesity and smoking. He did not indicate whether he discussed with Ms. Jones the risks associated with the combined surgeries.
At the close of evidence, counsel for Dr. Dennis requested jury instructions on both assumption of risk and contributory negligence. The court agreed to instruct on contributory negligence, explaining that “the only issue on which there is sufficient evidence to get to the jury on a contributory negligence claim is the smoking.” It denied the assumption of risk instruction. First, the trial judge quoted
Morrison v. MacNamara,
[ajlthough the defense of assumption of risk has been applied in a wide variety of circumstances to defeat negligence claims, the defense has rarely been sustained in actions involving professional negligence.... [T]he disparity in knowledge between professionals and their clientele generally precludes recipients of professional services from knowing whether a professional’s conduct is in fact negligent_Thus, save for exceptional circumstances, a patient cannot assume the risk of negligent treatment.
In response, counsel for Dr. Dennis made clear that his assumption of risk theory was likewise based on smoking: “I’m not saying that she assumed the risk of negligent treatment. I’m saying she not only assumed the risk of not smoking but the risk that she could develop exactly what she did develop from the surgery.” The court noted, secondly, that the instruction “would really be duplicative in any event....” “[I]t’s hard to imagine that the jury could find assumption of the risk as posited by defense counsel without also finding first, that Ms. Jones was given adequate informed consent. And second, that Ms. Jones was contributorily negligent.”
The verdict form instructed the jury to determine if (1) Dr. Dennis was negligent *676 in his treatment of Ms. Jones, or if (2) Dr. Dennis failed to obtain her informed consent to the surgeries. If the jury responded affirmatively to either of these questions, and found that Dr. Dennis’s conduct or omissions proximately caused her injuries, it was to answer the next question:
Has defendant Robert Dennis proved, by a preponderance of the evidence, that plaintiff Hazel Jones was herself negligent and that her negligence was a proximate cause of her injuries?
The jury found that Dr. Dennis was not negligent, but that he failed to obtain her informed consent. It also found that Dr. Dennis had not proven that Ms. Jones “was herself negligent.” ' Ms. Jones was awarded $501,300.00 in past and future medical expenses and non-economic damages.
III. Discussion
A. Standard of Review
“[A] party is entitled to a jury instruction upon the theory of the case if there is sufficient evidence to support it.”
George Washington Univ. v. Waas,
B. Assumption of Risk Instruction
Before turning to the requested instruction on assumption of risk, we first review the grounds for liability. “Failure to obtain informed consent” is a variety of medical negligence.
Jones v. Howard Univ., Inc.,
Assumption of risk, like contributory negligence, is an affirmative defense in negligence cases and may operate as a complete bar to liability.
See Morrison,
Because of the disparity in knowledge between a doctor and his patient, the defense of assumption of risk is rarely available in medical malpractice cases.
Morrison,
Ms. Jones’s argument certainly is bolstered by the jury’s finding that Dr. Dennis failed to obtain her informed consent to the surgeries. Nevertheless, reviewing the evidence in the light most favorable to Dr. Dennis, this may have been one of those rare cases where assumption of risk was a viable defense to a claim of failure to obtain a patient’s informed consent.
See Nelson,
Smoking may well have created the most significant risk, however. The doctor insisted that he informed Ms. Jones of the risks of smoking and told her that continued smoking might cause her injury. Ms. Jones admitted that she continued smoking until the day of her surgeries. Both expert witnesses and Dr. Dennis himself testified that her continued smoking contributed to the post-surgical complications. Based on this evidence, a jury in theory could have found that the plaintiff actually knew and understood the full scope and magnitude of the danger arising from smoking and voluntarily exposed herself to that danger. Moreover, Dr. Dennis testified that he would not have performed the surgeries if he had known the truth — that Ms. Jones had continued to smoke. Therefore, the jury could have found that *678 Ms. Jones proximately caused her own injuries by continuing to smoke (contrary to the doctor’s instructions) and by falsely assuring the doctor that she had stopped smoking.
There is a dearth of case law on this subject, however, and we need not decide whether Dr. Dennis was entitled to an instruction on assumption of risk. Assuming (without deciding) that it was error to deny that instruction, we nevertheless are satisfied that any error was harmless.
C. Harmless Error
Reversal is not warranted where one can say, “with fair assurance, after pondering all that happened without stripping the erroneous action from the whole, that the judgment was not substantially swayed by the error.”
Nelson,
Dr. Dennis did not request an assumption of risk instruction tailored to the facts of this case. Thus, the instruction that would have been given, had his request been granted, was the standard instruction, which states:
You may find that the plaintiff assumed the risk of injury if the defendant proves by a preponderance of the evidence both of the following:
(1) That the plaintiff actually knew and understood the full scope and magnitude of the danger arising from the defendant’s conduct, and
(2) That the plaintiff voluntarily exposed herself to that danger.
Standardized Civil Jury Instructions for the District of Columbia, No. 5-17 (2002). Although the court did not give this charge, it did instruct the jury on contributory negligence as follows:
The defendant, Dr. Dennis, alleges that Ms. Jones was herself negligent in continuing to smoke cigarettes after he told her to stop smoking in advance of the surgeries. Dr. Dennis alleges further that such negligence was a significant contributing factor in the complications that Ms. Jones experienced following the surgeries on April 30, 1999. In this regard, a patient must exercise reasonable care to cooperate with her doctor. And if the patient’s failure is a cause of the patient’s harm, then the patient is *679 contributorily negligent. And the patient cannot recover from the doctor even if the doctor was negligent.
This instruction clearly conveyed the essence of the defense — that Ms. Jones was responsible for her own injuries because she failed to comply with Dr. Dennis’s instructions to quit smoking. “Here, the trial court’s instructions on contributory negligence ... encompassed [the very activity] that the defense assigned as evidence that [Ms. Jones] had assumed the risk.”
Sinai,
In this forum Dr. Dennis makes subtle distinctions between reasonable and unreasonable risks, but he did not make these claims in the trial court. (We have said that assumption of risk may encompass both reasonable and unreasonable risks, while contributory negligence applies only to unreasonable risks.
See Scoggins,
This possibility is more theoretical than real. Dr. Dennis’s counsel did not ask the jury to focus on whether Ms. Jones acted reasonably or unreasonably when she continued to smoke. Instead, when he discussed smoking, counsel focused on credibility and causation. “As you’ve heard, Dr. Dennis is of the old school.... [I]f he knows that the patient is still smoking, he won’t [perform the surgery].” Counsel asked the jurors whether they “believe[d] that this man said to his patient, don’t worry about the smoking, it’s no big deal,” as Ms. Jones had testified, or believed instead “that he did what he says he always, always does, which is tell the patient ... that you have to stop [smoking] a month before or I’m not going to do it. And she knew that on April 27th when she told him she had stopped earlier that month.”
Considering the instructions as a whole, and in the context of this record, we see no appreciable likelihood that this jury— which rejected the defense of contributory negligence — would have found that Ms. Jones assumed the risk if given the standard jury instruction (which makes no distinction between reasonable and unreasonable risks). Therefore, any error resulting from the court’s refusal to give the requested instruction was harmless.
See Higgenbottom,
*680 The judgment of the Superior Court is hereby affirmed.
So ordered.
Notes
. There was some dispute as to whether Ms. Jones agreed to receive liposuction, which Dr. Dennis performed at the time he performed the other two surgeries.
. In addition to Ms. Jones, Dr. Dennis, and their experts, Ms. Jones’s sister and husband also testified. Ms. Jones’s husband was a *675 party to the litigation below but his claims are not before this court.
. Dr. Dennis makes two additional arguments, which we dispose of here. He contends that the trial judge committed reversible error by instructing the jurors that if they found Ms. Jones contributorily negligent, then "[she] cannot recover from the doctor even if the doctor was negligent.” He claims this instruction "serve[d] only to potentially discourage jurors from finding contributory negligence.” The instruction given by the trial judge is an accurate statement of our law on contributory negligence.
See Massengale v.
*680
Pitts,
Dr. Dennis also complains that the trial judge erroneously omitted language about proximate cause from the “bad result” jury instruction. However, this instruction only impacts the jury's consideration of whether Dr. Dennis was negligent. The issue is moot because the jury found that the doctor was not negligent; therefore, he was not prejudiced by any error in the instruction.
See Wingfield,
