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Diagnostic error – What physicians and hospitals can do to reduce risks for patients

News
Article

Hospital watchdog group responds to study on patient deaths in ICU.

dark hospital corridor gurney: © sudok1 - stock.adobe.com

© sudok1 - stock.adobe.com

Whether in private practice or in hospital, physicians must be advocates for keeping patients safe from errors, injuries, accidents and infections, according to a national watchdog group that ranks hospitals for patient safety.

The Leapfrog Group started in 2000 as a nonprofit analyst that assigns letter grades to hospitals and ambulatory surgical centers based on data publicly available and self-reported data. The organization has 29 various practices hospitals can adopt to reduce diagnostic errors.

Patient safety was at the center of a study published in January 2024. Researchers reported in 2019, 23% of patients transferred to an intensive care unit or who died in hospital experienced a diagnostic error, “the majority of which were harmful to the patient,” said the original investigation published in JAMA Internal Medicine.

© Leapfrog Group

Jean-Luc Tilly, MPA, PMP
© Leapfrog Group

Analyzing electronic health records of 2,428 patients in 29 hospitals across the country, they found 550 patients experienced diagnostic errors, or failures to either accurately explain a patient’s health problem or a failure to communicate that information to the patient. Among the patients who experienced a diagnostic error, 486, or 17%, experienced some form of harm due to the error. Among 1,863 patients who died, diagnostic error contributed to 121 cases, or 6.6%, according to the researchers.

The Leapfrog Group was not involved with that study. Jean-Luc Tilly, MPA, PMP, program manager for Leapfrog Group’s health care ratings, spoke to Medical Economics about the findings, the latest on patient safety, and how primary care physicians can help.

The following transcript was edited for length and clarity.

Medical Economics: What was most surprising to you about the study findings?

Jean-Luc Tilly, MPA, PMP: That the rate is high, the rate of misdiagnosis there, especially the rate that leads to harm, about 17% if I remember right. And that is much higher than the rate that has been identified in prior work. There's been some prior systematic reviews looking autopsy reports for folks who passed in the ICU, and they have found an error rate that sort of ranges between 4% to 7.5% for diagnostic errors that have led to harm. So, this is 17%, three times as high, that it is higher than the prior work. That said, the rates of diagnostic error there's a consensus in the field that I agree with, that they're undercounted to some extent. There's a lot of variation in the literature, I mean, even that rate 4 to 7.5%, a big difference there. And I think in this case of this study, the author's brought some real analytical rigor to their process. So, I think, unfortunately, it probably suggests that their figure, which I would call alarming, is probably pretty close to truth. And that's a high level of patient harm.

Medical Economics: The JAMA Internal Medicine study used a sample of 29 hospitals around the country. Is it reasonable to extrapolate from that pool that diagnostic errors are happening in other hospitals not included in the study sample?

Jean-Luc Tilly, MPA, PMP: Here's how I think about that. This study was conducted at academic medical centers, exclusively. So that's hospitals like Johns Hopkins Hospital, Massachusetts General, Mayo Clinic. These are all hospitals that have Leapfrog A safety grades, you know, the safest hospitals in the country, and they're, frankly, at least as well prepared as any hospital nationwide to take on a diagnostic challenge. Especially when we think about identifying the needed tests or considering a range of probable diagnoses. They see a lot of special cases. Those two dimensions of diagnosis, identifying the right testing concerning range of diagnosis mean, those were the greatest risk of error in this study. You know, my supposition is that hospitals that have less access to specialists or tests, delays in getting those tests, which is probably many hospitals across the country that aren't academic medical centers, they may have even higher incidences of these kinds of errors. That suggests that it's probably a higher national rate.

Medical Economics: What can a physician do to become intentional about advocating for patient safety in that hospital context?

Jean-Luc Tilly, MPA, PMP: There are a lot of really specific approaches that are you'd find in the hospital survey, but that apply to independent practice too. Medication reconciliation – medication errors are a leading cause of medical errors overall, and so being really intentional about giving out medications, doing a medication reconciliation with your patients, using the same kind of physician order entry system to check for errors and interactions. Hand hygiene is a huge concern in hospitals, a concern physician practices too. Obviously your typical physicians practice is naturally much less of a risk, but that's another area that I might prioritize. But I think too physicians that are practicing at a hospital can have a lot to contribute to the overall quality of care at that hospital. They can speak up when they see opportunities for improvement, they can report diagnostic errors, those are underreported. They would be doing a lot of good by reporting them and that helps the whole system learn from the opportunity. I think too clinicians and primary care physicians can do a lot to educate themselves about common diagnostic errors, sort of have them in the back of their mind. You know, the Society to Improve Diagnosis in Medicine is kind of a specialty society focused on this issue. They have a wealth of resources available on their website, they’re a leading advocate in the space. There are some strategies that are evidence-based that apply to any physician trying to take good diagnosis. Physicians, for example, can actually get a much better patient history by waiting a full minute for patients to speak about their condition without interruption. And by that, I don't mean that the physicians are sort of rudely interrupting their patients all the time. What I mean is that, someone comes in, they start to tell you about the problem and say, I have some pain in my stomach, and naturally you're asking, OK, but wait, what quadrant? Or, tell me how it felt specifically. But the trouble is that by interrupting the patient, you interrupt their train of thought, you cut off the history to some extent. So by waiting just a full minute, it’s not too long, to let the patient's speak about the condition uninterrupted, you can bring out a lot of that history there that you might not have, otherwise they can help you make a better diagnosis. And then too there's a strategy – it’s true of both of these strategies, they're very low cost, I think they can be very effective. This is just called the diagnostic pause, and really, it's just that. After you've reached a diagnosis, maybe there's a kind of a handoff or something, to just take a minute to think and instead of relying on your heuristic, instead of being careful to think did I jump to a conclusion here? So to try and switch your thinking from this fast, type-one processing, which, you know, physicians, unfortunately, just because of different kinds of resource issues and so on are so often forced to work and be in a hurry. But to take a step back and think, to try and be a little bit more abstract, a little bit more analytical, and catch themselves, possibly having made a mistake in the diagnosis, or at least having a diagnosis that they hadn't thought occur to them once they've had a chance to take that pause. That's another evidence-based strategy that doesn't cost anything, that doesn't take too much time, but has been shown to really improve or rather to reduce errors in diagnosis.

Medical Economics: News releases about the JAMA Internal Medicine study included comments from the researchers about potentially integrating artificial intelligence into patient care and the diagnostic process. Can you explain Leapfrog Group's approach to using technology to increase patient safety?

Jean-Luc Tilly, MPA, PMP: Through our history, really, our first quality of measure was around computerized physician order entry. Leapfrog has been really supportive of hospitals, and anyone in health care really, adopting new technology to improve patient safety. I mentioned computerized physician order entry, but you know, barcode medication scanning, which prevents administering to the wrong drugs, electronic monitoring for hand hygiene, newer CT scanning machines that use much lower radiation doses. All of those are things that we've evaluated hospitals on their rate of adoption, because those are very effective and have a real demonstrable impact on patient safety. But that doesn't change the top priority for us, which is patient safety itself. We aren’t Luddites, but it'll take us some years yet to really set a clear standard on exactly what kinds of things coming out of the AI space are things that you want to evaluate hospitals on whether or not they're taking them up. That's not to say that it's not a great time to do new demonstration projects and things like that and find out what's working. But I think for the time being, we're not really ready to set a standard in this area.

Medical Economics: Our main audience is primary care physicians. What would you like to say to them, or what else would you like them to know?

Jean-Luc Tilly, MPA, PMP: The key thing for me really is primary care physicians, and I know a few pretty well, they have born a tremendous burden throughout the pandemic. I hope that they don't take the study to mean that they have to shoulder the responsibility of individually solving what's really a collective, systemic problem. The problem of diagnostic errors goes well beyond any individual clinician, whether practicing in a hospital or ambulatory care. It's really the hospital leaders, our health care system, that are responsible for clearly communicating that diagnostic errors are a priority, and then for providing the resources that individual clinicians need to succeed at what is an enormously challenging task. That is one key message that I hope isn't lost here.

I do think too, that physicians can do a lot to prepare their patients for going into the hospital. A lot of this maybe is familiar advice. I mean, speaking out when you’re unsafe, being proactive about your own care, double-checking things, but too, and this one I think is really critical, if you can you have a family member or friend with you to help advocate on your behalf. I think that can make really all the difference. One of the one of those (Leapfrog) 29 practices is around the escalation of care. Very often for very serious conditions when a patient's hospitalized, whether that's sepsis or hemorrhaging, maternity, it's the husband and his wife giving birth, it's the family member with their grandmother, who was the first to notice that deterioration in care and to minimize the time to escalate that care. We want hospitals to have a process in place to let patients and family caregivers have a clear-cut path to getting an evaluation for an escalation of care, but we want patients to realize and that with that family or friend on board, they'll have a safer care experience.

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