Medical Diagnostic Errors

Eric Topol 1/28/24: Toward the eradication of medical diagnostic error

Key points/excerpts:

  • There is little evidence that we are reducing diagnostic errors despite more lab testing and more imaging. “One of the important reasons for these errors is failure to consider the diagnosis when evaluating the patient.” This, in turn, may be related to brief office visits.
  • There are a few ways that artificial intelligence (AI) is emerging to make a difference to diagnostic accuracy. ..A systematic analysis of 33 randomized trials of colonoscopy, with or without real-time AI machine vision, indicated there was more than a 50% reduction in missing polyps and adenomas, and the inspection time added by AI to achieve this enhanced accuracy averaged only 10 s. 
  • AI support to radiologists for a large mammography study “showed improvement in accuracy with a considerable 44% reduction of screen-reading workload.” The cancer detection rate was 6.1 per 1000 compared to 5.1 per 1000 in the control group.
  • In difficult NEJM CPC cases, large language AI model (LLM) outperformed clinicians (see slide below).” The LLM was nearly twice as accurate as physicians for accuracy of diagnosis, 59.1 versus 33.6%, respectively.”
  • “Likewise, the cofounder of OpenAI, Ilya Sutskever, was emphatic about AI’s future medical superintelligence: ‘If you have an intelligent computer, an AGI [artificial general intelligence], that is built to be a doctor, it will have complete and exhaustive knowledge of all medical literature, it will have billions of hours of clinical experience.’ “

My take (borrowed from Dr. Topol): “We are certainly not there yet. But in the years ahead, …it will become increasingly likely that AI will play an invaluable role in providing second opinions with automated, System 2 machine-thinking, to help us move toward the unattainable but worthy goal of eradicating diagnostic errors.”

Related blog posts:

Pharmacotherapy for Obesity

Recently, Dr. Shruthi Arora, an Emory Pediatric Endocrinologist and part of CHOA’s Strong4Life team, provided a terrific review of pediatric obesity pharmacology for our group. 

Here are a few slides from Dr. Arora’s lecture:

General points from this lecture:

  • GLP-1 agents are a huge advance but currently limited by affordability (frequently there is a lack of insurance coverage if there is not T2DM) and availability. In addition, most individuals will regain weight loss when these agents are stopped.
  • GLP-1 agents are not recommended in the following: patients with gastroparesis, and patients with a personal or family history significant for MEN 2 A /MEN 2 B/ Medullary thyroid cancer
  • Long-term data is still needed. These agents have been associated with muscle and bone loss; thus, working to assure a good diet is still very important

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NASPGHAN has a good review/webinar on this topic as well: Pediatric MASLD in the Current Era of Pharmacological and Surgical Obesity Treatment Options. For members, after sign in, you can register and login to this webinar (look under clinical practice tab). This webinar made a lot of useful points (many covered by Dr. Arora too).

  • For GLP-1 agents, due to effects on gastric emptying, they are generally held prior to anesthesia. If they are given weekly, then hold 1 week prior to anesthesia. If it is a daily medication, hold for 1 day prior to anesthesia.
  • Surgery definitely helps improve MASH -though variable responses in patients. SLEEVE gastrectomy is currently the most frequent bariatric surgery
  • There is trouble getting GLP-1 medications. 
  • Limited knowledge regarding long-term effects of cycling of GLP-1 agents.
  • Obesity is a long-term disease –>anticipate long-term treatment

The Wall Street Journal recently published a personal account of using the newer obesity medications. Bradley Olson, 1/12/24: A Weight-Loss Drug Changed My Life. Will It Solve My Problem? (behind a paywall). This article discusses the dramatic improvement experienced by the writer along with his concerns about the cost of the medication and potential for rebound when he can no longer afford it. Two of the figures:

Disclaimer: This blog, gutsandgrowth, assumes no responsibility for any use or operation of any method, product, instruction, concept or idea contained in the material herein or for any injury or damage to persons or property (whether products liability, negligence or otherwise) resulting from such use or operation. These blog posts are for educational purposes only. Specific dosing of medications (along with potential adverse effects) should be confirmed by prescribing physician.  Because of rapid advances in the medical sciences, the gutsandgrowth blog cautions that independent verification should be made of diagnosis and drug dosages. The reader is solely responsible for the conduct of any suggested test or procedure.  This content is not a substitute for medical advice, diagnosis or treatment provided by a qualified healthcare provider. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a condition.

Life, Even in the ICU, is Better with Music

S Mounier et al. J Pediatr 2024: 264: 113736. Music Therapy During Basic Daily Care in Critically Ill Children: A Randomized Crossover Clinical Trial

In this cross-over randomized controlled study with 50 children (median age 3.5 yrs), the authors assessed whether music therapy (MT) is effective to reduce pain during daily personal hygiene care (DPHC). The primary outcome was variation of the Face Legs Activity Cry Consolability (FLACC) score (range, 0-10). Key findings:

  • FLACC score was 0.0 (0.0-3.0) at baseline and 3.0 (1.0-5.5) during DPHC. With MT, these values were, respectively, 0.0 (0.0-1.0) and 2.0 (0.5-4.0).
  • Rates of FLACC scores of >4 during DPHC, which indicates severe pain, were 42% in standard conditions and 17% with MT (P = .013).

In their background, the authors note that MT “provides feelings of well-being and relaxation and acts as a distractor, leading to the inhibition of pain perception.”

My take: This study reinforces the importance of distraction to reduce pain. Life is better and less painful with music.

Of course, the scene from “Airplane!” shows that not all music therapy is beneficial: Clumsy Stewardess and Near Death Experience

LA Times: Dr. Lapado, Florida Surgeon General, is a “Dangerous Quack”

LA Times, Michael Hiltzik (1/9/24): Column: Meet the most dangerous quack in America

An excerpt:

It used to be fairly easy to dismiss Florida’s surgeon general, Dr. Joseph A. Ladapo, as a clownish anti-vaccine quack posing a danger mostly to residents of his home state…Ladapo has moved from promoting useless treatments for COVID-19, such as the drugs hydroxychloroquine and ivermectin, to waging an ever-expanding fact-free campaign against the leading COVID vaccines…

Last January, a faculty committee at the University of Florida medical school found that Ladapo engaged in “careless, irregular and contentious” research practices that may have violated university rules…

That brings us to Ladapo’s latest adventure in medical quackery, his claim that no one should take the mRNA vaccines….Ladapo’s advice is based on what he says is research that the Pfizer and Moderna mRNA COVID vaccines contain fragments of DNA that are injected into human cells, which they can contaminate and turn into cancer cells…

The human cell has a panoply of mechanisms to destroy foreign DNA. Even if the fragments managed to penetrate the cell nucleus, which can’t happen, they would have to cut up the existing DNA, which would require a mechanism the fragments don’t have.

“So the chance that DNA could affect your DNA is zero,” Offit said..

Ladapo’s words and actions have surely contributed to his state’s pathetic performance in getting its citizens vaccinated against COVID. With 11.6% of its population fully vaccinated with a booster as of last May, Florida had a rate among the lowest in the nation. (California’s rate was 20.6%.) Among those 65 and older — purportedly the population that Florida strives to protect — only 31.2% were fully vaccinated. (California: 48.3%.)

Florida’s death rate from COVID of 375 per 100,000 people is among the worst in the country. (California: 283.) You can ignore the defense that the difference is due to Florida’s relatively older population; states with even older median ages have done much better: Vermont (170), New Hampshire (245) and Maine (252). The difference is the indifference of Ladapo and DeSantis to their own residents’ health.

Related blog posts:

As reported on 1/19/24

Why Exercise is Good For Health

SP Ashcroft et al. Cell Metabolism 2024; https://doi.org/10.1016/j.cmet.2023.12.008. Open Access! Exercise induces tissue-specific adaptations to enhance cardiometabolic health

This is a 23 page review with 395 references.

“The risk associated with multiple cancers, cardiovascular disease, diabetes, and all-cause mortality is decreased in individuals who meet the current recommendations for physical activity…Over time, the associated metabolic stress of each individual exercise bout provides the basis for long-term adaptations across tissues, including the cardiovascular system, skeletal muscleadipose tissue, liver, pancreas, gut, and brain. Therefore, regular exercise is associated with a plethora of benefits throughout the whole body, including improved cardiorespiratory fitness, physical function, and glycemic control. Overall, we summarize the exercise-induced adaptations that occur within multiple tissues and how they converge to ultimately improve cardiometabolic health.”

Related blog posts:

Silencing the FDA’s Voice on Drug Information

T Watson, C Robertson. NEJM 2023; 389; 25: 2312-2314. Silencing the FDA’s Voice — Drug Information on Trial

Recently (9/1/23), “a panel of the Fifth Circuit Court of Appeals allowed a case to proceed against the Food and Drug Administration (FDA) concerning its public statements on the use of ivermectin for treating Covid-19.1“ Even though a district court had dismissed the suit due to “sovereign immunity,” the Fifth Court stated the FDA had exceeded its authority.

Some excerpts from this commentary:

Between August 2021 and April 2022, however, the agency released several public messages about ivermectin and Covid-19 — including an informal consumer update titled “Why You Should Not Use Ivermectin to Treat or Prevent COVID-19”

Three physicians who prescribed and promoted ivermectin for Covid-19 treatment sued the FDA, alleging that its statements interfered with their ability to practice medicine and harmed their professional reputations, even though they hadn’t been named by the FDA. One doctor claimed the agency’s statements had caused him to be referred to his state medical board; the others claimed to have lost admitting privileges at a hospital and a role at a medical school.

According to the Fifth Circuit, the FDA “has authority to inform, announce, and apprise — but not to endorse, denounce, or advise”….

The Fifth Circuit panel’s opinion is puzzling in light of the FDA’s long-standing and generally unquestioned role as a public health educator. The agency routinely releases consumer-directed information; for example, its website instructs consumers about the appropriate use of antibiotics and includes related clinical information. The opinion suggests the FDA may need to reevaluate each of these communications — an impractical proposition.

The opinion is also in tension with a long-standing constitutional principle known as the government speech doctrine, according to which the government can itself be a speaker, like any person or corporation, and isn’t required to be neutral when it expresses an opinion..

The Fifth Circuit’s holding reflects suspicion of agency influence, even in matters in which the agency is an expert speaking directly about products it regulates. The court’s interpretation of the FDA’s proper role may permit only narrow forms of expression...

Subsequent courts could use the Fifth Circuit’s logic to disempower other agencies with health-related missions, such as the Centers for Disease Control and Prevention and the Environmental Protection Agency… Meanwhile, “junk science” pervades social media and harms public health.2

My take: It is hard to believe that the justification for this challenge comes from three physicians prescribing ivermectin. It turns out the FDA’s advice was spot on and that these physicians were offering an ineffective therapy. This is a worrisome trend in which the judicial branch seeks

  1. To limit government agencies without explicit line-by-line authorization by a dysfunctional congress
  2. And to substitute its judgement over matters in which it has little expertise over governmental agencies tasked with protecting our country (eg. FDA, CDC, EPA, and others)

Here is a link to one of the FDA’s communications on Ivermectin –good advice (12/10/21): Why You Should Not Use Ivermectin to Treat or Prevent COVID-19

Related blog posts:

Bad Advice for COVID, Then and Now

  1. Hydroxychloroquine (HCQ) was used off-label for COVID-19 during the first wave despite the absence of evidence documenting its clinical benefits. A recent study has estimated that it resulted in an increase death rate of 11%. ”The number of hydroxychloroquine related deaths in hospitalized patients is estimated at 16,990 in six countries.” Ref: Open Access! A Pradelle et al. Biomedicine & Pharmacotherapy 2024; 171: 116055. Deaths induced by compassionate use of hydroxychloroquine during the first COVID-19 wave: an estimate
  2. NY Times 1/3/24: Citing Misinformation, Florida Health Official Calls for Halt to Covid Vaccines

An excerpt:

Florida’s surgeon general on Wednesday called for a halt to the use of Covid vaccines, citing widely debunked concerns that contaminants in the vaccine can permanently integrate into human DNA.

Dr. Ladapo’s latest contention is “very irresponsible,” said John Wherry, a vaccine expert and director of the Institute for Immunology at the University of Pennsylvania. “He has, however, demonstrated a tenuous grasp of science and medicine in general over the course of the pandemic so this is not surprising,” Dr. Wherry said….

For Dr. Ladapo’s claim to be true, humans would need to have an enzyme that can incorporate foreign DNA into their genomes. “We don’t have one,” said Dr. Eric Rubin, a member of the F.D.A.’s vaccine advisory committee and the editor in chief of the New England Journal of Medicine.

My take: The first article estimates the number of deaths due to the bad advice of using hydroxychloroquine. Perhaps in a few years, researchers will be able to calculate the number of deaths and hospitalizations that occur due to the bad advice of Florida’s surgeon general.

Related blog posts:

When Hospitals Look Like The Ritz (But Cost Even More)

The Atlantic, Elisabeth Rosenthal (11/17/23): Hospitals Have Gotten Too Nice

This article starts off discussing a recent trend of how medical problems are often described as a “journey.” However, the main focus is the trend of hospitals developing expensive amenities further adding to huge medical bills.

An excerpt:

So much of being seriously ill has been rebranded in American health care as a kind of adventure…But on these journeys, you don’t get to go anywhere—except maybe the hospital or doctor’s office, which is likely, too, to have bought into the travel concept. In the past two decades, American hospitals have gotten into the business of hotel-like hospitality (illness can be fun!) rather than confine themselves to the business of disease (what a downer). And although the care might stay solid, the focus on luxurious amenities and the fancy new buildings that house them is one of the factors that have helped send costs for patients soaring that much higher, to prices well above those in other developed countries…

In recent years, tight budgets, staffing shortages, and burnout have hit American hospitals. At the same time, many health centers in the U.S.—including the most prestigious ones, and even some community hospitals—have morphed into seven-star hotels…A hospital might now boast about its views, high-thread-count sheets, or food provided by a Michelin-starred chef…

Back in 2008, researchers at the National Bureau of Economic Research estimated that a hospital investing in amenities would increase demand by 38 percent, whereas a similar investment in clinical quality would lead to only a 13 percent increase…

These amenities have a cost, and they are not worth nearly what we’re paying for them as we’re billed for $100,000 joint replacements and $9,000 CT scans. Room charges in many hospitals can exceed $1,000 a night. And “facility fees” for outpatient procedures and even office visits can reach hundreds of dollars, and simply don’t exist elsewhere. A hospital’s function is to diagnose and to heal, at a price that sick people can afford. I dream of a no-frills Target- or Ikea-like hospital for care…

How about focusing on the very basic things that health systems in the U.S. should do, but—in my experience—in many cases do not, like making it easier for patients to schedule appointments? Shortening the now lengthy wait times to see physicians who take insurance plans? Paying for adequate staffing on nights and weekends, so patients don’t linger in bed pointlessly for two days until social workers return on Monday? Or ending those two-day stays in emergency rooms when all inpatient beds are full? 

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Obidos, Portugal

Personal Account of Extreme Short Bowel Syndrome

Jeff Lewis, one of my colleagues for the last 25 years, recently shared a story on The Moth Atlanta. For those of you who have not been to The Moth, you can hear many of these stories on NPR (The Moth Radio Hour) or The Moth Podcast. Each session has a topic and 10 people are invited to share their heartfelt and sometimes hilarious stories.

Jeff is a brilliant, innovative individual and a good friend. Some of his diverse accomplishments include helping start a camp for our celiac patients (Camp WeeKanEatit), starting our microbiome transplant program (FMT), advancing the health of special needs kids (given an award for this by the Georgia Department of Public Health) and starting a lecture series to honor our surgical colleague Donald Schaffner. He even prompted changes in the hospital’s advice line. In addition, he has been instrumental in making the business part of our office work and in initiating a whole host of research projects. One of his children has told me that Jeff has a calling as a clinician which is so true.

Here is the kind, sad and thoughtful story he shared (6 min): The Moth (YouTube Link -not available without link https://youtu.be/yK-iOMSDlYM)

My take: It would be a great idea to have a Moth-type session at our national meeting. I enjoy listening to these stories particularly on long trips.

Per google search: “The Moth was founded in 1997 by the writer George Dawes Green — its name comes from his memories of growing up in St. Simons Island, Ga., where neighbors would gather late at night on a friend’s porch to tell stories and drink bourbon as moths flew in through the broken screens and circled the porch light.”

Related blog post: Short Bowel Syndrome is a Full Time Job