Comparison of velocity and volumetric indexes of left ventricular filling during increased heart rate with exercise and amyl nitrite.

Physiologic variables, such as heart rate, affect the noninvasive indexes of left ventricular filling, complicating the interpretation of these indexes for clinical assessment of diastolic function. We compared the effect in normal subjects of increased heart rate provoked by both exercise and amyl nitrite on noninvasive velocity and volumetric indexes of… CONTINUE READING