Clinical laboratories can play a critical role in helping doctors to order correct tests and interpret the results
Nearly 800,000 Americans die or are permanently disabled each year due to diagnostic errors. That’s according to research conducted at Johns Hopkins School of Medicine that found most misdiagnoses are due to cognitive errors on the part of the treating physicians. Many diagnoses typically begin with–and are often achieved through—clinical laboratory testing. For that reason, the range of diagnostic errors identified in this study will interest pathologists and lab managers.
Of course, many types of diagnostic errors have nothing to do with lab tests. That said, the research team noted that some diagnostic errors take place when physicians do not pay attention to test results that indicate a patient is not doing well, or do not understand the significance of the test results. There are also examples where doctors order the wrong lab tests for patients’ symptoms.
The Johns Hopkins study findings were published in the journal BMJ Quality and Safety titled, “Burden of Serious Harms from Diagnostic Error in the USA.” The research team determined that only 15 diseases “accounted for 50.7% of total serious harms” and nearly 40% of those harms involved just five medical conditions:
These can be narrowed down even further to just three categories, the researchers noted in BMJ Quality and Safety. They are:
Major vascular events,
Infections, and
Cancers.
In an interview with CNN Health, lead author of the study David Newman-Toker, MD, PhD, a neurology professor at Johns Hopkins and Director of the Division of Neuro-Visual and Vestibular Disorders, said “These are relatively common diseases that are missed relatively commonly and are associated with significant amounts of harm.”
“We focused here on the serious harms, but the number of diagnostic errors that happen out there in the US each year is probably somewhere on the order of magnitude of 50 to 100 million,” neurologist David Newman-Toker, MD, PhD (above), professor and Director of the Division of Neuro-Visual and Vestibular Disorders at Johns Hopkins, who led the study, told STAT. “If you actually look, you see it’s happening all the time.” Clinical laboratories play a key role in ensuring correct understanding of the tests they perform. (Photo copyright: Johns Hopkins University.)
Changes to Healthcare Risk Management
According to Newman-Toker, the Johns Hopkins study is “the first population health estimate of the number of patients seriously harmed. It also provides more information about the distribution of the diseases that are involved,” Relias Media reported.
The sheer volume of this issue is not lost on the researchers. Newman-Toker likens it to measuring an iceberg.
“You dive below the surface, and you measure the circumference of the iceberg, and [you] will say, ‘Oh my gosh, it’s really big down here.’ And then you go five more feet, and you measure the circumference, and it keeps getting bigger. By the time you’re 20 feet below the surface, you realize this is huge,” he told Relias Media.
Newman-Toker believes his team’s research offers an opportunity for physicians and healthcare risk managers to better understand how exactly to prioritize their resources and focus their efforts. “In terms of how it informs their day-to-day decision-making, it really is rebalancing some of the efforts a little bit in the direction of conditions that are more common and more commonly misdiagnosed than perhaps indicated by simply looking at claims data,” he noted.
Vascular events can present in symptoms typical of much less serious conditions. Strokes, for example, can present with vague symptoms such as a headache or dizziness. This is similar to heart attacks, which can just present as chest pains. However, heart attacks are far less misdiagnosed than strokes because of a decades-long effort to eradicate those diagnostic errors.
“Diagnostic errors are errors of omission,” Daniel Yang, MD, an internist and Program Director for the Diagnostic Excellence Initiative at the Gordon and Betty Moore Foundation, told CNN Health. “The question is: Could [the outcome] be prevented if we had done something differently earlier on? Oftentimes, that’s a judgment call that two doctors might disagree on.”
Physicians and risk managers can work together to determine the best course of action to identify vague symptoms and prevent the deaths and serious injuries that can come from diagnostic errors.
“A patient comes into the ED with a headache or dizziness, and they get told it’ll go away, and then they go home. And then a week later, you find out that they [had] a stroke,” he explained. “By then, the stroke has compounded so much that what could have been addressed in the moment … for $10,000 now becomes a $100,000 issue. … So, there’s a margin of $90,000 that has been added to the US health system burden because of the misdiagnosis.”
Padula estimates that the total cost for these misdiagnoses could come to as much as $100 billion on the healthcare system.
What’s the Solution?
How can physicians avoid misdiagnoses and keep their patients safe? Newman-Toker suggests that physicians consult with other doctors. “I believe that the quickest way to solve the diagnostic error problem in the real world would be to construct approaches that basically rely on the ‘phone a friend’ model,” he told STAT News.
“This doesn’t mean that the patient should have to seek a second opinion, but rather that providers should make it standard practice to consult with a colleague before providing a diagnosis or dismissing a patient,” STAT News added.
Clinical laboratory professionals should note that while these misdiagnoses do not take place in the lab, doctor may order incorrect tests for patients by misreading their symptoms. Thus, clinical pathologists and lab scientists can play a critical role in helping doctors to order the correct tests for their patients and accurately interpret the results.
Device is latest example that wearable healthcare devices are moving past simple biomarker monitoring and into the area of assisting in rehab
Companies unrelated to traditional clinical laboratory medicine continue to develop wearable devices that enable individuals to monitor their health while also alerting physicians and caregivers in real time when certain biomarkers are out of range.
One recent example is US biotechnology company STAT Health Informatics in Boston, which has developed a wearable device that monitors blood flow to the ear and face “to better understand symptoms such as dizziness, brain fog, headaches, fainting, and fatigue that occur upon standing,” according to a press release. The tiny device is worn in the ear and connects wirelessly to a smartphone app.
Johns Hopkins University clinically tested the STAT device, and according to Medical Device Network, “It can predict a person fainting minutes before it happens and can be worn with more than 90% of devices that go in or around the ear. It can also be left in while sleeping and showering, meaning less likelihood of removing the device and forgetting to replace it.”
Another notable aspect of this invention is that it’s an example of how the ongoing miniaturization of various technologies makes it possible to invent smaller devices but with greater capabilities. In the case of the STAT device, it combines tiny sensors, Bluetooth, and an equally tiny battery to produce a device that fits in the ear and can function for up to three days before needing a recharge.
It’s easy to imagine these technologies being used for other types of diagnostic testing devices that could be managed by clinical laboratories.
“It’s well understood that the ear is a biometric gold mine because of its close proximity to the brain and major arteries. This allows for new biometrics … to be possible,” said Daniel Lee (above), co-founder and CEO of STAT Health, in a press release. “In addition, the ear is largely isolated from data corruption caused by arm motion—a problem that plagues current wearables and prevents them from monitoring heart metrics during many daily tasks. The ear is really the ideal window into the brain and heart.” Clinical laboratory managers may want to watch how this technology is further developed to incorporate other biomarkers for diseases and health conditions. (Photo copyright: STAT Health.)
How STAT Works
Every time the wearer stands, the STAT device tracks the change in response of blood pressure, heart rate, and blood flow to the head. “The device distills all this information into an ‘Up Score’ to track time spent upright. Its ‘Flow Score’ helps users pace their recovery by watching for blood flow abnormalities,” MassDevice reported.
According to the company’s website, STAT is intended for use in individuals who have been diagnosed with conditions known to suffer from drops in blood flow to the head, such as:
As an individual continues to use the device, STAT “learns about each user’s unique body to provide personalized coaching for healthy lifestyle choices,” MassDevice reported.
Another key factor is the technology built into the device. An optical sensor was chosen over ultrasound because STAT Health felt it was both easy to use and provided precise measurements accessing the shallow ear artery, MassDevice reported.
“Despite its small scale, the device incorporates advanced optical sensors, an accelerometer, a pressure sensor, temperature sensors, artificial intelligence (AI)-edge computing, three-day battery life (or more), and a micro solar panel,” Medical Device Network noted.
STAT’s image above demonstrates how truly minute the company’s wearable device is, even though it monitors blood flow to the face and ear looking for signs that the wearer is about to suffer bouts of dizziness or lightheadedness due to a drop in blood flow. (Photo copyright: STAT Health Informatics Inc.)
STAT’s Impact on Users’ Health
STAT’s developers intend the device to help individuals stay on track with their health. “The target population can navigate their condition better. If they’re not standing when they can, they will become deconditioned. This product encourages standing and being upright where possible, as part of rehab,” Lee told Medical Device Network.
Lee has been developing wearable in-ear devices for many years.
“Nobody has realized the ear’s true potential due to the miniaturization and complex systems design needed to make a practical and user-friendly ear wearable,” he told MassDevice. “After multiple engineering breakthroughs, we’ve succeeded in unlocking the ear to combine the convenience and long-term nature of wearables with the high fidelity nature of obtrusive clinical monitors. No other device comes close along the axis of wearability and cardiac signal quality, which is why we believe STAT is truly the world’s most advanced wearable.”
For clinical laboratories, though STAT is not a diagnostic test, it is the latest example of how companies are developing wearable monitoring devices intended to allow individuals to monitor their health. It moves beyond the simple monitoring of Apple Watch and Fitbit. This device can aid individuals during rehab.
Wearable healthcare devices will continue to be introduced that are smaller, allow more precise measurements of target biomarkers, and alert wearers in real time when those markers are out of range. Keeping in tune with the newest developments will help clinical laboratories and pathologists find new ways to support healthcare providers who recommend these devices for monitoring their patients conditions.
Digital Therapeutics combined with clinical laboratory oversight testing could help chronic disease patients avoid surgeries and expensive drug therapies
One area of technology that has fundamentally changed the healthcare industry involves mobile devices. But those early “wellness” tools have evolved. Today’s modern mobile health devices feature software applications (apps) designed to remotely treat chronic conditions by helping modify patient behavior, as well as monitoring drug intake and physical condition biomarkers. These devices are dubbed “Digital Therapeutics,” and they present opportunities for anatomic pathology groups and clinical laboratories.
For if mobile apps are going to be used to monitor patients’ adherence to therapy—including prescription drugs—there will be a need for clinical laboratory tests that work in harmony with these apps. Otherwise, how will providers and insurers know for certain patients’ biomarkers have improved or regressed?
Massive Investments in Digital Therapeutics Companies
Today’s digital therapeutics (AKA, software for drugs) can be tailor to specific treatments of chronic conditions, such as:
· diabetes mellitus;
· cardiovascular disease;
· hypertension; and,
· chronic obstructive pulmonary disease (COPD).
Forbes states that the “future of healthcare will be app based.” That seem likely given the massive influx of capital being directed at the mobile healthcare industry.
The graphic above is taken from a 2015 report by PricewaterhouseCoopers Health Research Institute (PwC), which sourced the data from the 2014 clinician workforce and consumer surveys. Since then, the demand for mHealth products has increased exponentially. Today’s digital therapeutics market includes clinical laboratory and pathology group treatments and drug therapies. (Graphic copyright: PwC.)
The global digital therapeutics market is projected to grow to about $9 billion by 2025. That’s up from $1.7 billion last year, according to a report by Grand View Research. Driving the popularity of digital therapeutics are the benefits it affords patients, explained the report’s summary. They include:
· Continuous monitoring of vital signs;
· Medication management; and,
· Current healthcare reminders.
This is where pathologists and clinical laboratories come in. The medical laboratory can be the source for baseline blood tests before apps are used. And then, ongoing testing can determine if patients are taking drugs according to treatment guidelines and making the appropriate lifestyle changes.
Start-ups Raise Millions, Define Digital Therapeutics Space
One unique aspect of digital therapeutics is its ability to promote health improvements through behavioral changes alone. And millions are being invested in the concept.
For example, Virta Health Corp. raised $37 million in funding for an app that coaches diabetics on a diet to reverse their condition without drugs or surgery, according to MIT Technology Review.
“[Digital therapeutics] is still a fluid space that everyone is trying to categorize,” Peter Hames, co-founder and Chief Executive Officer of Big Health noted in the MIT Technology Review article. Among other programs, Big Health developed Sleepio, a sleep improvement program or insomnia app. Hames says most apps fall into two categories: “medication augmentation” or “medication replacement.”
Omada Health secured $127 million to conduct a clinical trial with Humana that investigates prediabetes, noted Forbes.
The study findings, which appeared in the Journal of Aging and Health, suggest that Omada Health’s digital behavior change program can help people to reduce chronic disease risk, noted a Humana news release.
The study involved Humana Medicare Advantage insurance members, who were enrolled in Omada Health’s Diabetes Prevention Program. The app enabled them to partake in online courses, use wireless scales, and tap other digital health tools as they worked to improve health and reduce risk of type 2 diabetes. Human coaches also were accessible.
“Few efforts have explored the feasibility and effectiveness of using technology to deliver diabetes prevention programs specifically for older adults,” the study researchers wrote.
According to the researchers:
· 501 people with average weight of 208 pounds participated;
· Hour-long lessons were made available and expected to be completed by smartphone, laptop, or tablet;
· Coaches monitored the information participants provided and their requests for counseling;
· 92% of participants completed at least nine of the 16 core online courses, which focused on topics such as changing food habits and increasing physical activities;
· People lost 7.5% of body weight after 12 months, or 13 to 14 lbs.;
· A subsample (69 individuals) who had lab tests performed improved glucose control as evidenced by a -0.14% reduction in glycosylated hemoglobin, and a decrease of -7.08 mg/dL in total cholesterol.
“These results support the clinical validity of the program with Medicare-eligible, at risk older adults. They are added evidence that chronic disease risk reduction is achievable through a variety of modalities, including digital-based programs with human coaching,” the researchers noted.
And because digital therapeutics amasses data that can be leveraged, Omada Health’s program acts as a “continuous learning system,” Sean Duffy, Omada Health’s co-founder and Chief Executive Officer, noted in Undark.
App Tracks People After Heart Attack
Johns Hopkins Medicine’s Corrie Health app is aimed at helping patients recover from heart attacks. A study at Johns Hopkins Bayview Medical Center in Baltimore explored the effectiveness of app-enabled information and resources made available to patients early in the heart attack recovery process, according to Corrie Health’s Website.
Results from the clinical study of 50 patients show no one was readmitted to hospital in the first 30 days, Undark reported.
“We can actually enroll patients who are six or seven hours out of having a stent placed in the ICU. We’re giving [the Corrie Health app] to patients when they have the time to spend watching the videos and asking questions about their medications … We’re getting them to buy-in and learn the skills while they care the most,” Francoise Marvel, MD, an internist affiliated with Johns Hopkins Bayview Medical Center, told Undark.
A Role for Medical Laboratories
So, is there a role for medical laboratories where digital therapeutics are being used? We think so. Pathologists and lab leaders may even want to reach out to venture capitalists working on mobile apps that combine adherence to therapies with medical lab tests.
As our population ages and the shortage of physicians becomes more evident, digital therapeutics may be a smart way to address select patient needs in a quality and cost-effective manner.
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It is no surprise that below-average occupancy rates are a common denominator of most failed hospital, noted the Medicare Payment Advisory Commission (MedPAC). The 14 hospitals that closed in 2013 had an average occupancy rate of 34%. This is lower than the 48% average occupancy rate of the hospital nearest to the closing hospital, MedPAC stated in its March 2015 report to Congress. (more…)
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