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Short, clear explanations of the things medical students and clinicians look up, with figures you can move. Every fact is checked against its sources and cited.

  • Aortic stenosis vs aortic regurgitation: how the murmurs differOne question settles most of it: is the murmur between S1 and S2, or after S2? Hear both real recordings on one heartbeat, then learn where to listen.
  • How to auscultate the heart: where to listenWhat auscultation means, how to find the five listening points, and what you hear at each one, with real recordings you can play.
  • S3 vs S4 heart sounds: how to tell them apartWhen each extra sound falls in the heartbeat, what makes it, and what it tells you, with a beat you can watch and real recordings to hear.
  • SVT vs sinus tachycardia: how to tell them apart on an ECGA fast, narrow, regular rhythm usually comes down to one question: is the heart answering a call, or is it stuck in a loop?
  • The anion gap, explainedWhat the gap measures, how to calculate and correct it, and what a high, normal or low gap tells you, with charts you can move.
  • The cardiac conduction system, beat by beatWhere each heartbeat starts, how it reaches the ventricles, and which wave on the ECG each step draws, with a heart you can watch conduct.

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