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Korean Circ J. 1977 Dec;7(2):7-10. Korean. Original Article.
Lee JB .

Left ventricular ejection times were measured from indirect carotid arterial sphygmograms and digital plethysmograms in 118 healthy males and 106 healthy females. The carotid-derived left ventricular ejection time, which was generally accepted as a standard measurement, was shorter than the other in both sexes. However, there was a significant correlation between these two measurements in males and females. This suggests that the left ventficular ejection time obtained from the digital plethysmogram could provide a comparable information to that of the carotidderived one.

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