Analysis of Left Ventricular Volumes of the Heart by Thermal Dilution Technics
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概要
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The effects of left atrial pressure and myocardial contractility on stroke volume (S. V.) were analysed measuring the end-diastolic volume (E. D. V.) and the end-systolic volume (E. S. V.) of the left ventricle of the canine heart by the thermal dilution technics under constant heart rates.<BR>The results of experiments showed that the left atrial pressure dominantly affected E. D. V., and that myocardial contractility affected E. S. V. On the change of cramped pressure of the left atrium about 30-40 mm H<SUB>2</SUB>O, <I>d</I>E. D. V./<I>d</I>S. V. was more than 5 times of <I>d</I>E. S. V./<I>d</I>S. V., while on the change of sympathetic nerve stimulation from the left stellate ganglion (from 1 Hz to 6 Hz, 6 V) <I>d</I>E. S. V./<I>d</I>S. V. was more than 4 times of <I>d</I>E. D. V./<I>d</I>S. V.
- 一般社団法人 日本生体医工学会の論文
一般社団法人 日本生体医工学会 | 論文
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