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The left ventricular ejection time (LVET) was studied by means of the carotid artery tracing in 512 elderly subjects (205 male and 307 female) who were between 60 and 90 years old (mean age, 70.5 years). A highly significant correlation was found between heart rate (HR) and LVET. The data on these aged subjects were compared and analyzed with the results previously reported concerning young and middle-aged adults. A small but significant increase of LVET with aging, independent of changes in HR and blood pressure, could be demonstrated by multiple regression analysis. A statistically significant difference existed between the sexes. The influence on LVET of parameters other than HR was small.
WILLEMS et al. (Wed,) studied this question.
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