The effect of cycle length on the time of occurrence of the first heart sound and the opening snap in mitral stenosis

Phonocardiography is often more valuable than electrocardiography in timing mechanical events in the cardiac cycle. This study shows that the opening and closing of the mitral valve are related to the length of the previous heart cycle as demonstrated by the variations occuring in auricular fibrilla...

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Published in:Circulation (New York, N.Y.) N.Y.), 1951-10, Vol.4 (4), p.576-580
Main Authors: MESSER, A L, COUNIHAN, T B, RAPPAPORT, M B, SPRAGUE, H B
Format: Article
Language:English
Subjects:
Constriction, Pathologic
Heart Sounds
Humans
Mitral Valve
Mitral Valve Stenosis
Old Medline
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container_end_page 580
container_issue 4
container_start_page 576
container_title Circulation (New York, N.Y.)
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creator MESSER, A L
COUNIHAN, T B
RAPPAPORT, M B
SPRAGUE, H B
description Phonocardiography is often more valuable than electrocardiography in timing mechanical events in the cardiac cycle. This study shows that the opening and closing of the mitral valve are related to the length of the previous heart cycle as demonstrated by the variations occuring in auricular fibrillation. These variations in valve action are controlled by the pressure gradient between left auricle and ventricle.
doi_str_mv 10.1161/01.CIR.4.4.576
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source Free E-Journal (出版社公開部分のみ）
subjects Constriction, Pathologic
Heart Sounds
Humans
Mitral Valve
Mitral Valve Stenosis
Old Medline
title The effect of cycle length on the time of occurrence of the first heart sound and the opening snap in mitral stenosis
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