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12 Cards in this Set

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CO = (2 things)
CO = SV*HR;
Fick principle: CO = rate of O2 consumption / (aO2 - vO2)
MAP = (2 things)
MAP = CO * TPR
MAP = (1/3) systolic + (2/3) diastolic
Pulse pressure = (2 things)
Pulse pressure = systolic - diastolic
Pulse pressure ~= stroke volume
Sv = (2 things)
SV = CO/HR
SV = EDV - ESV
initial exercise, prolonged exercise
initial: inc SV
prolonged: inc HR
If HR is too high, then:
diastolic filling is incomplete, get dec CO (eg. ventricular tachycardia)
SV affected by
SV CAP
inc SV: inc contractility, dec afterload, inc -0preload
contractility inc by:
catecholamines
inc intra ca2+
dec intra Na+
digitalis
contractiliy dec by:
beta 1 blockers
heart failure
CCB
acidosis
hypoxia/hypercapnea
myocardial O2 demand is inc by:
inc: afterload, contractility, heart rate, heart size (wall tension)
preload =
ventricular EDV
afterload =
systolic arterial pressure