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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Superior Vena Cava (SVC) Collapsibility Index (CI)
To determine the superior vena cava (SVC) collapsibility index (CI), I use transesophageal echocardiography (TEE) to obtain a midesophageal bicaval…
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DELTAHUB Carpio 2.0 Ergonomic Wrist Rest
I’ve been using the DELTAHUB Carpio 2.0 wrist rest with my Logitech MX Master 3S for roughly a month. Initially,…
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POCUS – Type B Aortic Dissection
Point-of-care ultrasound (POCUS) can be a quick and noninvasive modality to confirm a concerning pathology like type B aortic dissection.…
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Left Atrial Appendage Ligation
The left atrial appendage (LAA) is a small pouch located within the pericardium close to the left ventricular free wall…
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R-on-T Phenomenon
The R-on-T phenomenon is a type of ventricular extrasystole that can occur when a premature ventricular contraction (PVC) happens during…
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Absolute And Relative Refractory Periods
The absolute and relative refractory periods refer to the intervals during which the cardiac cells are either entirely or partially…