Welcome to RK.MD
A platform where cardiac anesthesiologist and intensivist Dr. Rishi Kumar shares insights in perioperative medicine, critical care, education, and tech while promoting curiosity and lifelong learning.
From The Blog
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Fidelity Backdoor Roth IRA
This post was updated in January 2026 based on the IRS limits for 2026. A Roth individual retirement account (IRA) allows annual…
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Looking Back At 2024
2024 has been a whirlwind of milestones and growth, both professionally and personally. This year, I was inducted into the…
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Net Worth Trend Over Five Years As An Attending
I started my career as an attending cardiac anesthesiologist and intensivist on October 1, 2019. Beginning in January 2020, I…
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Paravertebral Nerve Block
Paravertebral nerve blocks (PVBs) are regional anesthetic techniques that target the paravertebral space (PVS), where spinal nerves emerge from the…
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POCUS Lung B-Lines
B-lines are a vertical “comet-tail” artifact seen on lung ultrasound. They represent interstitial edema or increased lung water in thickened…
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ECG Lead II And Volume Responsiveness – The Brody Effect
The Brody effect highlights the relationship between intracavitary blood volume and the heart’s electrical activity, which, in turn, offers a…