Master PV Loops in 15 Minutes: High‑Yield Cardiac Physiology

In this tutorial, I explore how PV Loops help to show the beauty of the cardiac cycle. By plotting LV Pressure with LV Volume this video builds an intuitive, high yield framework for understanding the cardiac cycle. Designed with med students (and USMLE Step 1) in mind. 0:00. Introduction 0:35. A quick look back at Wiggers Diagram 1:02. Overview of the anatomy of PV Loops 1:56. Diastolic filling 2:32. Isovolumetric contraction 4:43. Systolic ejection 5:24. Isovolumetric relaxation 6:06. Direction of PV Loop (counter-clock wise) 6:49. Mitral and Aortic valves 10:11. Diastole and Systole 12:55. Stroke volume 14:00. In-a-Nutshell