American Physician Institute

08/26/2026

Central sleep apnea is uncommon. When you see it, the next question isn’t what—it’s why.

In this video, Dr. Raj explains:
• why high altitude can trigger central sleep apnea
• when altitude-related symptoms become more likely
• how acclimatization, PAP therapy, supplemental oxygen, and acetazolamide fit into treatment

Understanding the physiology behind high-altitude central sleep apnea makes it easier to recognize the condition and remember the management options when they matter most.

Preparing for your Sleep Medicine Boards?

The Pass Machine Sleep Medicine Board Review includes:
https://www.thepassmachine.com/sleep-medicine-board-review/?PS=FB
* 1,200+ board-style practice questions
* 27+ hours of lectures from board-focused faculty
* Earn up to 113.5 AMA PRA Category 1 CME Credits™

Watch to the end for a code to save an additional 10%.

08/20/2026

Your primary drive to breathe isn’t low oxygen.

It’s rising carbon dioxide.

In this video, Dr. Raj explains:

• why carbon dioxide, not oxygen, is the primary stimulus for breathing under normal conditions
• when oxygen does become the dominant respiratory signal
• what central and peripheral chemoreceptors actually detect, and why confusing the two leads to missed board questions

You’ll gain a clearer way to think about respiratory physiology the next time this topic appears on an exam or in your practice.

Preparing for your Sleep Medicine Boards?
https://www.thepassmachine.com/sleep-medicine-board-review/?PS=LI

The Pass Machine Sleep Medicine Board Review includes:
• 1,200+ board-style practice questions
• 27+ hours of lectures from board-focused faculty
• Content aligned with the ABIM exam blueprint

Watch to the end for a code to save an additional 10%.

08/17/2026

Many of us spend years searching for the one answer that will finally make life feel easier.

In this LifeBrief article, Dr. Jack explores why that search can sometimes keep us stuck, and how asking different questions can open the door to real growth.

The journey isn’t about finding the perfect answer. It’s about becoming the person who can navigate life’s challenges with greater wisdom.

Read more: https://www.lifebrief.com/patients-quest/?PS=FB

One simple realization I had years ago changed my view of my role as a clinician treating patients with psychiatric and related problems. This realization occurred when I looked up the etymology of the word ‘question’ on the internet. I don’t remember what triggered me to do this except that I...

08/12/2026

Bicarbonate gets most of the attention, but it’s only one of three ways carbon dioxide is carried in the blood.

In this video, Dr. Raj reviews the three forms of CO₂ transport, explains the role of carbonic anhydrase, and highlights why bicarbonate is the predominant form while dissolved CO₂ and carbamino compounds remain clinically important.

Preparing for your Sleep Medicine Boards?

The Pass Machine Sleep Medicine Board Review includes:
• 1,200+ board-style practice questions
• 27+ hours of high-yield lectures from board-focused faculty
• A 100-question practice test to help you focus your study time

Learn more about The Pass Machine Sleep Medicine Board Review:
https://www.thepassmachine.com/sleep-medicine-board-review/?PS=FB

Watch to the end for a code to save an additional 10%.

08/10/2026

Dr. Jack’s advice on how to like yourself more may not be what you’d expect.

We often believe confidence comes first. In reality, learning to treat yourself with the same understanding you’d offer someone else is often where lasting change begins.

That small shift can change more than you might think.

Read more: https://www.lifebrief.com/easy-way-to-like-yourself-more/?PS=FB

A lot of our suffering is self-induced and occurs from our perception of personal shortcomings. It’s easy to be disappointed in ourselves, especially given how competitive, fast-paced, and media-laced life is these days, and how high our expectations for ourselves have become. After all, anyone re...

08/05/2026

Oxygen saturation and PaO₂ are related, but they are not the same measurement.

In this video, Dr. Raj explains the two measurable forms of oxygen in the blood, how each is measured, and the three factors that influence arterial oxygen levels. It’s a concise review of a physiology concept that frequently comes up in Sleep Medicine.

Preparing for your Sleep Medicine Boards?

The Pass Machine Sleep Medicine Board Review includes:
• 1,200+ board-style practice questions
• 27+ hours of high-yield lectures from board-focused faculty
• Earn up to 113.5 AMA PRA Category 1 CME Credits™

Learn more about The Pass Machine Sleep Medicine Board Review:
https://www.thepassmachine.com/sleep-medicine-board-review/?PS=FB

Watch to the end of the video for a code to save an additional 10%.

08/04/2026

Change often brings two emotions at once: hope for what’s ahead and grief for what you’re leaving behind.

We don’t just adapt to new chapters. We also mourn the ones that mattered, even when moving forward is the right choice.

Understanding that tension can make change feel a little less lonely.

This week's LifeBrief: Heartbreak of Change
https://www.lifebrief.com/heartbreak-of-change/?PS=FB

Whether we like it or not, we are almost constantly in a time of transition. For our patients, change, when it occurs, is even more likely to be negative. For everyone, there are new risks and losses, and they will continue to be with us for an extended time. My goal today is not to dwell

07/29/2026

Idiopathic hypersomnia is often underdiagnosed and because it is a diagnosis of exclusion, the testing details matter.

In this video, Dr. Raj reviews the diagnostic criteria, including excessive daytime sleepiness lasting at least three months, MSLT findings, overnight polysomnography, and the role of actigraphy in documenting total sleep time.

Preparing for the Sleep Medicine Certification Exam?

The Pass Machine Sleep Medicine Board Review includes:

• 1,200+ Sleep Medicine board-style practice questions
• 27+ hours of high-yield lectures featuring board-focused faculty
• iOS and Android app for streaming or downloading lectures for offline listening

Get Course Details:
https://www.thepassmachine.com/sleep-medicine-board-review/?PS=FB

Follow Dr. Raj:
https://www.facebook.com/raj.dasgupta.5876

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07/23/2026

The diagnostic criteria for Type 1 narcolepsy have changed.

In this video, Dr. Raj Dasgupta reviews the ICSD-3 Text Revision, including excessive daytime sleepiness, cataplexy, hypocretin testing, polysomnography, and the MSLT. He also explains the updated significance of a sleep-onset REM period seen during polysomnography in a patient with cataplexy.

Preparing for the November 10, 2026 Sleep Medicine Certification Exam?

The Pass Machine Sleep Medicine Board Review includes:

• 1,200+ Sleep Medicine board-style practice questions
• 27+ hours of high-yield lectures from board-focused faculty
• A 100-question practice test to help identify where your study time is needed most

Learn more about The Pass Machine Sleep Medicine Board Review:https://www.thepassmachine.com/sleep-medicine-board-review/

Dr. Raj Dasgupta:
https://www.facebook.com/raj.dasgupta.5876

Watch to the end for a code to save an additional 10%.

07/22/2026

Acceptance is one of the most misunderstood ideas in mental health.

It isn’t giving up. It isn’t approving of what happened. And it isn’t pretending everything is okay.

Sometimes, acceptance is simply stopping the fight with reality so you can begin moving forward.

Read more: https://www.lifebrief.com/acceptance/?PS=FB