Playground

The block editor behind every lesson and note

Switch to Edit and click any block. Nothing here is saved.

Cardiac output, in one page

Cardiac output is heart rate × stroke volume: $CO = HR \times SV$ . See also Frank–Starling law.

The left ventricle ejects about 70 mL per beat at rest.

Clinical pearl

A falling blood pressure with a rising heart rate is compensation — not reassurance.

MAP \approx DBP + \tfrac{1}{3}(SBP - DBP)

(1)

Stroke volume vs preloadHeart failure

Cardiac output by state (L/min)

RestExercise

History of cardiology

1628

Harvey describes circulation

1903

Einthoven's ECG

1967

First heart transplant

2 flashcards

Normal resting CO?

≈ 5 L/min

1 / 2 · click card to flip

YouTube, Vimeo, Drive, Dropbox and Loom links all work

Editor playground · Polymath