Avoid malpractice while treating minor head trauma in children

In October 2011, the Centers for Disease Control and Prevention reported a 60% increase in “emergency department visits for sports– and recreation–related traumatic brain injuries, including concussions, among children and adolescents” over the past decade. That’s good news: as the CDC’s press release said, they believe the increase was due in part to “growing awareness among parents and coaches, and the public as a whole, about the need for individuals with a suspected TBI to be seen by a health care professional.” Great improvements have been made in terms of sports head injuries among kids, like through the CDC’s Heads Up initiative.

That’s the good news, but it raises an important question for emergency physicians and primary care physicians: are you ready for all the minor head trauma cases coming your way?

Viewed through a narrow lens, the solution to a suspected brain injury is obvious: if a kid complains about anything relating to their head, give them a CT scan. But CT scans come with their own costs and risks, not least exposing a developing brain to a year’s worth of background radiation.

I’m not here to tell you where the CT / no-CT line should be drawn. I can tell you, however, how I would draw that line as a medical malpractice lawyer when a parent comes in and tells me their doctor didn’t order a CT scan after a minor head trauma and their child later developed serious sequelae.

“Failure to diagnose” is most medical malpractice lawyers’ bread and butter. When we investigate cases, we use our own version of a differential diagnosis, scratching off every way we can lose until the case looks solid. Think jurors don’t understand the incremental risk of CT scans? Consider this sentence: “one head CT scan has more radiation than 20,000 trips through the TSA scanner at the airport.” We trial lawyers know the defense expert will say some version of that in front of the jury. We have to be ready to explain why it’s worth the risk.

Over the past few years there have been several major studies attempting to determine the indications of clinically significant TBI, including the National Emergency X-Radiography Utilization Study II (NEXUS II), and the Pediatric Emergency Care Applied Research Network (PECARN). There wasn’t, however, any clear synthesis of those studies’ findings until now, in “Evaluation of Minor Head Trauma in Pediatric Patients” by Dr. Amira Munas Bass and Dr. N. Ewen Wang, published in the January 2012 issue of Critical Decisions in Emergency Medicine.

Malpractice lawyers tend not to dwell on any particular publications, but we always like to know the latest empirical research before we decide whether or not to take a case, and the clearer the guidance, the better, both in taking strong cases and in rejecting weak ones. We know there’s a lot of medical malpractice out there, but the majority of our potential cases should not be pursued.

Based on the Bass-Wang article, we know that, if a primary care physician doesn’t send a child to the ED, or the ED discharges a child without a CT, after the child showed an abnormal mental status, emesis, evidence of a skull fracture or scalp trauma, or was the victim of a severe mechanism or fall from a great height, and the child develops serious sequelae, both NEXUS II and PECARN indicate the child’s symptoms should have indicated a clinically significant TBI. In contrast, if the only indications of a clinically significant TBI are the presence of a seizure or amnesia, then we similarly know under NEXUS II and PECARN that these symptoms may not have the same predictive value as was once believed.

In short, if you come into contact with pediatric patients who suffer minor head trauma, it may be time to brush up on your decision rules. You might just spare yourself a malpractice suit — not to mention save a life.

Maxwell S. Kennerly is an attorney who blogs at Litigation & Trial.

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  • http://www.facebook.com/profile.php?id=734785330 Cindy Tucker-Ambrosino Rn

    You don’t even need to order a CT anymore.  Just order an MRI!

    • http://www.facebook.com/profile.php?id=1052074130 Kevin Windisch

      If you do that with a small child you need general anesthesia with endotracheal intubation… Not an entirely benign procedure.

    • Erick Viorritto

      An MRI takes more time than a CT scan, necessitating sedation (with its attendant risks) for children who are too young to remain still during the series.  Also, at many hospitals, either MRI services, pediatric sedation services, or both are not available in the middle or the night, or on weekends.  The MRI scanner is by no means a replacement for CT’s in the proper evaluation of pediatric head trauma.

      – a pediatric neurology fellow

    • http://www.litigationandtrial.com/ Max Kennerly

      I agree with Erick and Kevin — an MRI requires sedation and a fair amount of potential expense and possibly issues of insurance coverage. The point of the above decision rules is to figure out if: (a) you don’t need to do a scan at all; (b) you should try to get more information before making a decision; or, (c) you absolutely need to get a CT.

  • WhiteCoatRants

    Max –

    Well written. And I think that this gives valuable insight to medical practitioners about how malpractice attorneys decide what cases to take. Thank you.

    A couple of things to note:
    1. Just because a child has one of the criteria mentioned in the studies doesn’t mean that the child has a significant intracranial injury. The likelihood of a significant ICI increases with the presence of certain criteria, but the overall number of cases of significant ICI is still low.
    2. There is no single variable whose presence or absence is 100% accurate in ruling in or ruling out an intracranial injury. See, for example, the criteria on the NEXUS study and percentages of patients with positive and negative scans here: http://pediatrics.aappublications.org/content/117/2/e238/T5.expansion.html

    Given the above, how should a physician defend oneself from accusations of failure to diagnose an ICI when a child has *any* criteria that show even a 1% chance of an ICI? For example, in the NEXUS II study, only 2% of patients 0-18 years old who had a significant ICI had cranial nerve abnormalities. Suppose a child has a head injury and the only abnormality on the child’s exam is a cranial nerve abnormality. The child is sent home without a CT scan and later has a bad outcome. Aren’t the plaintiff attorneys who sit the neurologically impaired young child in front of the jury during a trial going to argue that if a child has *any* chance of an ICI, that serious diagnosis ought to be ruled out? Retrospectively, the diagnosis always looks obvious. I could imagine a closing argument something like this …
    “If every child in a large grade school class bumped their head and had this abnormality, one of them would die. And if the negligent doctor just did a two minute CT scan, this child would be running on the playground with his classmates right now instead of being confined to a wheelchair.”

    I think that these types of situations drive defensive medicine. Studies may show criteria that reduce risk, but rarely do the data from studies *eliminate* the risk of missing a diagnosis. The yield on expensive diagnostic tests may be low, but the general public doesn’t see the huge incremental costs involved in catching the one outlier case. Then, when an outlier is missed, woe be the doctor who missed the diagnosis.

    The safest option in many physician’s minds is to get a CT scan on everyone with any type of head injury, regardless of the symptoms. Not saying that this is necessarily the correct action to take, but just giving everyone else an insight into what runs through our minds when faced with such cases.

  • http://www.litigationandtrial.com/ Max Kennerly

    All good points, with one exception that I’ll mention in a moment. Going right to your question — “Given the above, how should a physician defend oneself from accusations of failure to diagnose an ICI when a child has *any* criteria that show even a 1% chance of an ICI?” for which you give an example of the 2% occurrence of an ICI alongside cranial nerve abnormalities — my answer is, “by affirmatively stating to the jury that, of the 21 criteria studied in NEXUS, cranial nerve abnormalities were the least correlated with the presence of an intracranial injury, that the patient lacked all of the other criteria, and that you felt it was not worth the incremental risk to the patient of performing a CT.” Doctors frequently become their own worst enemies at trial by not saying what they really thought; juries can and do grasp the idea of very low probability risks, and that not ever theoretical indication warrants screening or treatment.

    Where, as here, there are multiple potential indicators of a serious diagnosis, and the patient lacked all of them except for the less useful ones, juries (IMHO) tend to side with the doctor. In most of our cases the doctor didn’t miss an outlier with unusual indications, the doctor missed an issue staring them in the face. On the more practical side, I wonder how many clinically significant TBIs in children ever present themselves with the sole symptom of a cranial nerve abnormality; most EDs could probably go years, maybe decades, before they see such a case. 

    As for the exception I mentioned above, in terms of driving defense medicine, I’m of the mindset that more data is usually better than less, and for the above research I think the primary effect will be to discourage CT scans where a patient shows none of the criteria at all, and thus reduce the amount of truly unnecessary scans. As noted by my post, EDs will likely see a rising number of pediatric patients brought in “just in case” after some sort of minor trauma to their head. The research above gives emergency physicians the confidence to not scan patients who show up after a minor head trauma but have none of the criteria at all. It’s no stretch to say that “child with minor head trauma, shows none of the criteria under PECARN or NEXUS II” adds up to thousands of ED visits annually.

    Once we get into situations where a patient has symptoms with a low probability, but not a zero probability, chance of having a clinically significant TBI, then we’re getting to the point where society has to make a choice about how high a risk we’re willing to tolerate. I can’t answer that one; the emergency medicine and primary care communities have to answer that one on their own, which answer will be translated (admittedly imprecisely) into the standard of care proven at trial.

  • Anonymous

    Max, if a patient has been ‘ruled out’ for ICH with PECARN and NEXUS, but is later found to have a bleed, would this case even be picked up by a malpractice attorney?  I feel that we have these decision rules, which aren’t necessarily perfect, but should be within the acceptable ‘miss’ rate where the risk of scan outweighs the benefit.  Is this actually the case from your perspective?

    • http://www.litigationandtrial.com/ Max Kennerly

      To answer your question — “[I]f a patient has been ‘ruled out’ for ICH with PECARN and NEXUS, but is later found to have a bleed, would this case even be picked up by a malpractice attorney?” — I would say, “likely not, and if they did pursue it they would likely not prevail.”

      Proving the tort of medical malpractice requires showing the doctor breached the standard of care and that this breach caused the patient harm. If a patient was ruled out of having a clinically significant TBI by way of PECARN and NEXUS, then, even the patient subsequently had damages resulting from an untreated ICH, I would have serious doubts about proving a breach in the standard of care. The doctor met the standard of care by applying the methods confirmed by the evidence-based medicine.

      Could a plaintiff’s lawyer find a qualified expert to sign off on a case in which a patient was ruled out by PECARN / NEXUS and then had a bleed? Maybe, but that expert still has to point to something in the patient’s history that should have indicated the need for a CT Scan. If that “something” isn’t on PECARN or NEXUS — e.g., the “something” is the mere fact that a child experienced a minor head trauma — then that expert is going to have a lot of trouble convincing the jury that the “something” is truly enough to justify a CT Scan every time you see it.

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