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Impedance stroke volume compared with dye and electromagnetic flowmeter values during drug-induced inotropic and

R P Patterson1, D A Witsoe, A From

  • 1University of Minnesota, Minneapolis 55455, USA.

Annals of the New York Academy of Sciences
|June 18, 1999
PubMed

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Regulation of Stroke Volume01:27

Regulation of Stroke Volume

The regulation of stroke volume, which is the amount of blood the heart pumps out during each heartbeat, is critical for maintaining a healthy circulatory system. Stroke volume is influenced by three main factors: preload, contractility, and afterload.
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...