This is a medical malpractice action brought against Wadley Regional Medical Center (“Wadley”) by the mother of a deceased child. The Arkansas Department of Human Services (“ADHS”) intervened to recover funds which it paid for medical expenses on behalf of the mother as a Medicaid recipient. The trial court rendered judgment for the child’s estate, but ordered that ADHS recover its medical expenses paid, and ordered that the mother take nothing. With one justice dissenting, the court of appeals affirmed but modified the judgment so that the mother could recover the difference between the jury’s award for medical expenses and the money awarded to ADHS.
I.
Kathy Murdock entered Wadley Hospital on January 21, 1991 while in labor, and was placed in a room attended by Dr. Thomas Wilson. In 1989, Murdock had given birth to a baby with severe congenital defects which eventually caused the baby’s death. Tests conducted during her second pregnancy revealed that this baby might also have similar congenital problems. Early on the morning of January 22, 1991, Murdock gave birth to Jessie Burgess. As feared, the baby was bom with certain abnormalities. The evidence showed that prenatal tests on Jessie revealed the following: absence of a part of his brain, the corpus callosum; absence of the cingulate gyrus; hypoplasia, or arrested development of the cerebellum and brain stem, which control balance, breathing, and heartbeat; and the presence of a cystic structure in the skull. Observations after the baby’s birth revealed dysmorphic facial features such as a prominent forehead; ante-verted nares, or outward-turning nostrils; widely spaced, downward slanting palpebral fissures; and an abnormally small chin. There was also evidence of an enlarged liver, small underdeveloped fingernails, and simian creases in the palm.
In addition, Jessie had taken meconium, or the contents of a bowel movement, into his mouth while in útero. Dr. Clark Green attempted to suction the meconium from the baby’s throat about eight to ten minutes after birth. That same day, Jessie was transferred to the Arkansas Children’s Hospital (“ACH”) in Little Rock. Jessie’s treatment at ACH continued until March 4, 1991, when he was discharged from the hospital. He was readmitted twice more after complications arose and died at ACH on March 2, 1992. Murdock filed this suit against Wadley alleging negligence and gross negligence in failing to have a policy for proper delivery of a newborn, and in failing to provide the necessary instruments and personnel for resuscitation of newborns who had passed me-conium in útero, which proximately caused Jessie’s death. ADHS intervened to recover $352,784 for the part of Murdock’s medical bills that it had paid. As a condition of Medicaid eligibility, Murdock had assigned to ADHS her right to any judgment that she might obtain from a third party “to the full extent of any amount which may be paid by Medicaid” on her behalf. Ark.Code Ann. § 20-77-307 (Michie 1991). The jury found that Wadley was negligent and that its negligence was a proximate cause of the injury to Jessie. The jury awarded $250,000 to Jessie’s estate, which is not at issue in this appeal, and $500,000 to Murdock to compensate her for Jessie’s medical expenses. The trial court rendered judgment for Jessie’s estate for $250,000, but ordered that ADHS recover $352,784 for medical expenses paid, and ordered that Kathy Murdock take nothing. The court of appeals affirmed but modified the judgment so that Murdock could recover the $147,216 difference between the jury’s award of $500,000 for medical expenses and the $352,784 awarded to ADHS. On appeal to this Court, Wadley contends that the court of appeals erred in affirming the judgment for ADHS for the principal amount of $352,784 and in modifying the judgment to allow Murdock’s recovery because there is no evidence of a direct causal link between the amount of medical expenses awarded and any injuries caused by Wadley’s negligence. *838 We agree, but because there is some evidence of damages attributable to Wadley’s negligence, we remand this cause to the trial court for a new trial.
II.
The court of appeals found that there was some evidence to support the July’s finding of a causal link between the injuries caused by Wadley’s negligence and the $500,000 medical expenses award.
The parties stipulated that all treatment of Jessie by ACH and all expenses corresponding thereto were reasonable and necessary. However, Wadley expressly reserved whether its acts or omissions proximately caused those treatments and expenses. Therefore, we will examine the evidence to support a causal link between Wadley’s negligence and the $500,000 in damages for medical expenses awarded to ADHS and Murdock.
Murdock and ADHS assert that the testimony of plaintiffs’ expert Dr. Michael Card-well, a specialist in obstetrics, gynecology, and fetal-maternal medicine, provides the causal link between Wadley’s negligence and the damages in question. Dr. Cardwell testified after his review of the medical records in the case that Wadley’s negligence caused Jessie to suffer meconium aspiration syndrome, which in turn caused other adverse conditions. Among the secondary damage attributed to meconium aspiration syndrome were hypoxic ischemic encephalopathy, asphyxiation, and a form of respiratory dependent lung disease.
To recover damages, the burden is on the plaintiff to produce evidence from which the jury may reasonably infer that the damages claimed resulted from the defendant’s conduct.
Haynes & Boone,
Q: Okay. Did you, in reviewing the medical records of Arkansas Children’s Hospital that are marked and comprise Plaintiffs Exhibit Number Five, did you form an opinion as to whether the treatment that is set forth in there would be necessary to treat the meco-nium aspiration and the sequelae that you told us about?
Cardwell: Yes, I have an opinion.
Q: And what is your opinion?
Cardwell: In my opinion, the therapeutic maneuvers performed at Arkansas Children’s Hospital [are] necessary to treat meconi-um aspiration syndrome suffered by baby Jessi[e].
Q: Do you feel like the treatment modalities that are described in the records are reasonable efforts to treat the condition that’s set forth in those records?
Cardwell: Yes, I feel that the treatments were necessary and reasonable in the circumstances.
Based on this testimony and other evidence, it is indisputable that Wadley’s negligence caused some of Jessie’s medical expenses. Further . testimony from Dr. Cardwell supports the same conclusion:
Q: Now, you say that you have concluded from the fact that the baby stayed on a respirator sixteen days, from that fact *839 you have concluded that there was a serious aspiration?
Cardwell: It’s serious in that — Let me clarify it a little bit. Meconium aspiration syndrome is a serious problem. The sequelae of it can be even serious. In this particular baby, it aspirated meconium. It went without oxygen essentially for eight minutes or more. The meconi-um aspiration syndrome caused the hypoxic ischemic encephalopathy. Now, that led to the damage of the baby’s brain permanently, and eventually led to demise of the baby. Now, the meconium aspiration in the lungs might have cleared, but not the hypoxic is-chemic encephalopathy. This is a permanent damage to the central nervous system.
On cross-examination, he testified:
Cardwell: Well, I — not to argue with the doctors in Little Rock, but why did the baby stay on the respirator for sixteen days if it was a mild meconium aspiration syndrome?
Q: Do you think that maybe the baby’s small brain stem and the baby’s genetic problems with the breathing apparatus may have had something to do with that?
Cardwell: No.
Even Wadle/s own expert, Dr. Arrington, testified that some of the damages were caused by the meconium aspiration:
Q: What portion of the treatment that Jessie received at Arkansas Children’s in that first hospitalization was, in your judgment, necessitated because of the meconium aspiration?
A: I would say the first twenty-seven hours, plus the transport [to ACH],
Wadley concedes that “this evidence could ... support a causative link for treatment for the first twenty-seven hours of hospitalization.” One of Jessie’s treating physicians at Wadley, Dr. Green, provided testimony supporting the conclusion that at least some of the expenses incurred at ACH resulted from the meconium aspiration:
Green: We suctioned a lot [of meconium] out, but there was some concern that there might have been some aspiration, yes.
Q: And based upon that, you transferred the child to [ACH]?
Green: Correct.
Other evidence ties Jessie’s first hospitalization at ACH primarily to meconium aspiration syndrome and its complications. The diagnosis listed on the records in Exhibit Five corresponding to the first hospitalization is listed as “Term Newbom/Meconium Aspiration/Agenesis Corpus Callosum.” On admittance to ACH, the baby was examined and the chart notes “mild meconium aspiration syndrome.” A test performed later that day contains the notation “slight worsening of meconium aspiration syndrome.” A chest examination performed on February 6 notes that the condition of the lungs was “consistent with meconium aspiration pneumonia.” Again, on February 8, the test notation reads “all of these findings ... are consistent with meconium aspiration pneumonia.” This diagnosis continues until the lungs were found clear and the baby discharged in mid-February. An ACH discharge summary states that Jessie spent two weeks on the ventilator because of meconium aspiration.
Thus, there is legally sufficient evidence directly linking treatments incurred during the first hospitalization solely to the meconi-um aspiration. Plaintiffs Exhibit 25 shows that the treatment expenses during the first hospitalization at ACH were $66,694.14 between January 22 and February 16, and $19,-976.68 between February 17 and March 4. The cost of the ACH ambulance transport on January 22 was $2,022.91. Plaintiffs Exhibit 10 listed the expenses incurred at ACH by hospitalization and treatment period. The cost of the first hospitalization was listed as $88,777.83, which is roughly equivalent to the smn of the amounts listed in Exhibit 25.
However, while this is some evidence of damage caused by Wadlejfs negligence, a plaintiff may recover only for those injuries
*840
caused by the event made the basis of suit.
Morgan v. Compugraphic Corp.,
The acts or omissions that are the basis of this suit are Wadley’s failure to properly treat Jessie for meconium aspiration and its effects, and ACH’s subsequent treatment of those conditions only. However, Dr. Card-well’s testimony and the other evidence supporting a link to some of the damages do not indicate that the conditions caused by Wad-ley were the only conditions necessitating treatment at ACH and do not establish that all services rendered there were for meconi-um aspiration and its effects. There is no evidence that segregates the medical expenses awarded as corresponding to the treatment for conditions the meconium aspiration caused. The context of Dr. Cardwell's testimony is the health problems incurred by Jessie because of Wadley’s negligence. The fact that he did not focus on other reasons for which Jessie may have been treated in the fourteen months leading up to his death does not mean other reasons and corresponding treatment were not present.
Often, patients in hospitals are treated for more than one condition brought on by causes independent of each other. Had there been only one possible condition to be treated at ACH, Dr. Cardwell’s testimony about “the therapeutic maneuvers” and “the treatment modalities” would have been sufficient to link the treatment with all of the medical expenses. However, it is undisputed that prenatal ultrasounds and the autopsy revealed a hypoplastic cerebellum, absence of the cingulate gyrus, and agenesis of the corpus callosum. There was more than one condition to be treated, each produced by an independent cause, and sufficient evidence to indicate that treatment for more than one condition occurred. Therefore, it was incumbent upon the plaintiffs to prove which treatments were due to meconium aspiration and its effects, and the specific costs associated with those treatments sufficient to support a jury award of $500,000 for medical expenses. Because they failed to do so, we must reverse.
Cf. Travelers Indem. Co. v. McKillip,
The court of appeals reasoned that because the jury returned a verdict of $500,-000 for medical expenses out of a total bill of $748,710.44, the jury made deductions based on the evidence that indicated that some of the treatment at ACH was caused by Wadley’s negligence while some was caused by the birth defects.
Furthermore, medical malpractice actions involve such technical and specialized knowledge that lay jurors generally need medical expert testimony to assist them in evaluating factual evidence. Darrell L. Keith,
Medical Expert Testimony in Texas Medical Malpractice Cases,
43 Baylor L.Rev. 1, 3 n. 1 (1991) (citing
Hood v. Phillips,
Because of our disposition of the case, we need not reach Wadley’s other point of error, which complains that Murdock should not recover the difference between the amount paid by ADHS and the jury award, because under the Arkansas Medicaid Program, she could never be liable for those expenses. This issue is not dispositive of Wadley’s appeal.
III.
We now turn to the proper disposition of this cause. Because Murdock and ADHS presented legally sufficient evidence that some of the medical expenses resulted from the meconium aspiration only, they should be afforded an opportunity to develop this evidence further. As a general rule, “when we sustain a no evidence point of error after a trial on the merits, we render judgment on that point.”
Holt Atherton Indus., Inc. v. Heine,
Accordingly, we reverse the judgment of the court of appeals, and we remand this cause to the trial court for a new trial consistent with this opinion.
