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Adjustable cuffs are wrapped around calves, lower thighs, and upper thighs, including buttocks
Cuffs are activated by events in the cardiac cycle via microprocessor interpreted ECG signals
Cuffs inflate sequentially and rapidly at the onset of diastole to prevent blood from being trapped in vascular beds
Cuffs deflate just prior to systole, allowing a rapid drop in vascular impediance and, consequently, cardiac afterload
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Diastolic perfusion pressure and the ratio of the mean diastolic pressure to the mean systolic pressure are increased
Coronary flow increases with diastolic pressure since coronary vascular resistance is minimal during cardiac diastole
Coronary collateral flow to ischemic regions of the myocardium is increased
Stroke volume per unit work, and therefore efficiency of the left ventricle, are increased
Left ventricular pressure and PTM (pressure time per minute) are reduced, or cardiac output is increased, or both without increasing oxygen requirements |