Ventricular tachycardia has which of the following hemodynamic effects?
a. Decreased cardiac output from increased ventricular filling time
b. Decreased cardiac output from decreased stroke volume
c. Decreased cardiac output from increased preload
d. Decreased cardiac output from decreased afterload
B
Tachycardia is detrimental to anyone with ischemic heart disease because it decreases the time for ventricular filling, decreases stroke volume, and compromises cardiac output. Tachycardia increases heart work and myocardial oxygen demand while decreasing oxygen supply by decreasing coronary artery filling time.
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