Category Archives: Medicine

Medicine: Understanding ‘Long Covid’ Syndrome

Depression: How Ketamine Can Help (Yale Medicine)

Depression is one of the most common and most debilitating mental health disorders, affecting some 17 million adults in the US. It also continues to be a misunderstood, often hard-to-treat illness. Researchers have worked for decades to better understand the neurobiology underpinning depression.

For patients with severe, treatment-resistant depression, spending months or even years searching for good treatments can be totally disabling. The prevailing hypothesis for years was that depression was regulated by the neurotransmitter’s serotonin and norepinephrine.

Eventually, data began to suggest that maybe something much larger and more global was involved in the brain to account for depression, which led researchers to begin working with glutamate and GABA, the most abundant neurotransmitters in the brain. These chemicals are involved in neuroplasticity – the brain’s ability to adapt to change and protect itself against stressful events.

Neuroplasticity is a physical thing, too: it manifests itself “in terms of synapses, how these neurons are actually touching each other and communicating with each other,” explains Gerard Sanacora, PhD, MD, Director of the Yale Depression Research Program. “And we know that in depression, the number and strength of these interconnections decreases,” says Rachel Katz, MD, a professor of Clinical Psychiatry at Yale.

Ketamine – originally developed and still used as an anesthetic – works on those two neurotransmitters and was discovered to have rapid antidepressant effects. Some experience an improvement in symptoms in 24 hours or less. “We think that one of the things that Ketamine does, that helps to explain its antidepressant effects, is help the brain to regrow the synapses, the connections between nerve cells,” says John Krystal, MD, Chair of the Department of Psychiatry at Yale.

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Melanoma: How To Catch Skin Cancer Early (Mayo)

Views: Is U.S. Healthcare System Broken? (Harvard)

Here’s a question that’s been on my mind and perhaps yours: Is the US healthcare system expensive, complicated, dysfunctional, or broken? The simple answer is yes to all.

Below are 10 of the most convincing arguments I’ve heard that our system needs a major overhaul. And that’s just the tip of the iceberg. Remember, an entire industry has evolved in the US just to help people navigate the maddeningly complex task of choosing a health insurance plan.

The cost is enormous

  • High cost, not highest quality. Despite spending far more on healthcare than other high-income nations, the US scores poorly on many key health measures, including life expectancy, preventable hospital admissions, suicide, and maternal mortality. And for all that expense, satisfaction with the current healthcare system is relatively low in the US.
  • Financial burden. High costs combined with high numbers of underinsured or uninsured means many people risk bankruptcy if they develop a serious illness. Prices vary widely, and it’s nearly impossible to compare the quality or cost of your healthcare options — or even to know how big a bill to expect. And even when you ask lots of questions ahead of time and stick with recommended doctors in your health insurance network, you may still wind up getting a surprise bill. My neighbor did after knee surgery: even though the hospital and his surgeon were in his insurance network, the anesthesiologist was not.

Access is uneven

  • Health insurance tied to employment. During World War II, healthcare was offered as a way to attract workers since employers had few other options. Few people had private insurance then, but now a layoff can jeopardize your access to healthcare.
  • Healthcare disparities. The current US healthcare system has a cruel tendency to delay or deny high-quality care to those who are most in need of it but can least afford its high cost. This contributes to avoidable healthcare disparities for people of color and other disadvantaged groups.
  • Health insurers may discourage care to hold down costs. Many health insurance companies restrict expensive medications, tests, and other services by declining coverage until forms are filled out to justify the service to the insurer. True, this can prevent unnecessary expense to the healthcare system — and to the insurance company. Yet it also discourages care deemed appropriate by your physician.

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Infographic: What Is Cardiac Rehabilitation?

Analysis: The Cognitive Effects Of Covid-19

Covid-19 is complex. It can affect the nervous system, leading to language disorders, strokes and seizures. Scientists are still trying to understand why. 75% of people hospitalised with the virus continue to suffer from secondary symptoms at least six months after they recover. Many find it hard to function in their daily lives. Researchers hope understanding Covid’s impact on the brain could pave a way for treatment.

Telemedicine: Growth Rate Peaked In April 2020, Stabilized During 2021

A year ago, we estimated that up to $250 billion of US healthcare spend could potentially be shifted to virtual or virtually enabled care. Approaching this potential level of virtual health is not a foregone conclusion. It would likely require sustained consumer and clinician adoption and accelerated redesign of care pathways to incorporate virtual modalities.

  • Telehealth utilization has stabilized at levels 38X higher than before the pandemic. After an initial spike to more than 32 percent of office and outpatient visits occurring via telehealth in April 2020, utilization levels have largely stabilized, ranging from 13 to 17 percent across all specialties.2 This utilization reflects more than two-thirds of what we anticipated as visits that could be virtualized.3
  • Similarly, consumer and provider attitudes toward telehealth have improved since the pre-COVID-19 era. Perceptions and usage have dropped slightly since the peak in spring 2020. Some barriers—such as perceptions of technology security—remain to be addressed to sustain consumer and provider virtual health adoption, and models are likely to evolve to optimize hybrid virtual and in-person care delivery.
  • Some regulatory changes that facilitated expanded use of telehealth have been made permanent, for example, the Centers for Medicare & Medicaid Services’ expansion of reimbursable telehealth codes for the 2021 physician fee schedule. But uncertainty still exists as to the fate of other services that may lose their waiver status when the public health emergency ends.
  • Investment in virtual care and digital health more broadly has skyrocketed, fueling further innovation, with 3X the level of venture capitalist digital health investment in 2020 than it had in 2017.4
  • Virtual healthcare models and business models are evolving and proliferating, moving from purely “virtual urgent care” to a range of services enabling longitudinal virtual care, integration of telehealth with other virtual health solutions, and hybrid virtual/in-person care models, with the potential to improve consumer experience/convenience, access, outcomes, and affordability.

Read more at McKinsey & Company

Harvard: ‘Nanobodies’ Evolved From Synthetic Antibody Fragments

A new approach developed by Harvard Medical School researchers uses yeast to rapidly evolve synthetic antibody fragments called nanobodies with the aim to find variants that are effective at binding to selected antigens, including SARS-CoV-2. The antibodies are intended for use in diagnostic tests and disease treatments. Read the full story: https://hms.harvard.edu/news/antibody…

Health: Hip Replacement Surgery Success Rates

The mission of COMPASS is to provide patients with access to comprehensive quality and safety data across a variety of Massachusetts General Hospital surgical specialties. In this video, learn about performance data for Mass General hip replacement surgery including its success rate and recovery and rehabilitation.