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Glo Heart Function

QuestionAnswer
HR>150 increases? Myocardial demand (MVO2) and can = myocardial ischemia if MVO2>MDO2 (myocardial bld supply)
HR>150 decreases? < diastolic filling time (atrial/ vent filling) = <SV = <CO = < BP = < coronary artery/ organ/ tiss perfusion
HR<50 decreases? <CO = <BP
Lose of atrial kick w/ which rythmns? Afib, Aflutter, junctional, ventricular rythms
Atrial kick contributes __%? 20-30% more bld to vent filling
Effects of no atrial kick? CO may be inadequate = hemodynamic compromise
Retrograde depolarization of the atria looks like __ on EKG/ originate where? - neg P wave, before, during, after QRS- AV, junctional, ventricular, irritable parts of atria --> stimulus not caused by SA
HR atria/ junctional/ vent? 60-100, 40-60, 20-40
Created by: silouette55
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