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cardiac output

QuestionAnswer
cardiac output how much blood to body per minute
stroke volume formula EDV-ESV mL/b
effects of preload on stroke volume increase preload= increase SV, decrease preload= decrease SV
effects of contractility on SV increase contractility- increase SV, decrease contractility= decrease SV
effects of afterload on SV increase afterload= decrease SV, decrease afterload= increase SV
what increases contractility Positive ionotropic factors (epinephrine)
what decreases contractility negative ionotropic factors (hypoxia)
SV is controlled by preload, contractility, afterload
preload the "stretch". EDV
contractility force of contraction
afterload the tension needed to overcome to pump blood effectively
causes of lowered heart rate negative chronotropic factors (hypothermia, PNS)
causes of raised heartrate positive chronotropic factors (caffeine, epinephrine)
bradycardia HR lower than 60bpm
tachycardia HR higher than 100bpm
cardiac output formula SV X HR mL/m
Heart rate cardiac cycles per minute (bpm)
Stroke volume how much blood to body per cardiac cycle
Created by: huntybaby
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