[Hokkaido igaku zasshi] The Hokkaido journal of medical science
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Hokkaido Igaku Zasshi · Jan 1978
[A clinical study with apexcardiogram, kinetocardiogram and carotid pulse tracing in aortic insufficiency (author's transl)].
The apexcardiogram, kinetocardiogram and carotid pulse tracing were studied in 24 normal subjects and 20 patients with aortic insufficiency. The electrocardiogram and phonocardiogram were recorded simultaneously as the time reference. The study of the carotid pulse tracing and systolic time intervals was made using the injection of methoxane and inhalation of amyl nitrite. ⋯ In contrast, amyl nitrite decreased total peripheral resistance and produced a significant decline in the ratio of the height of the tidal wave to that of the percussion wave. In conclusions, the carotid waves contain two systolic maximums, the percussion wave and tidal wave, the former related, at least in part, to peak blood volume and the latter to aortic pressure. Comparing with systolic time intervals in aortic insufficiency and that of normal cases, the patients with aortic insufficiency had statistically significant increase in the ejection time index and pre-ejection time, especially after the injection of methoxamine.