Why the study?
Do acute alterations in heart rate and systemic arterial pressure affect echocardiographic measures of left ventricular performance in normal human subjects?
Do acute alterations in heart rate and systemic arterial pressure affect echocardiographic measures of left ventricular performance in normal human subjects?
Echocardiographic measures of left ventricular performance (Vcf and Vpw) are highly sensitive to acute changes in heart rate and systemic arterial pressure, which must be accounted for during serial assessments.
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Acute HR/BP changes alter Vcf; leaves open whether adjustments are needed for serial echo LV assessments.
Hirshleifer et al. (1975) studied this question.
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