Document Detail

Systolic honks in young children.
MedLine Citation:
PMID:  879028     Owner:  NLM     Status:  MEDLINE    
Three children with loud systolic honks were studied noninvasively with phonocardiography and echocardiography. It was shown that the precordial honk, like the late systolic mitral murmur and the clicking apical systolic sound, is part of a continuum of auscultatory sounds that result from a defect of mitral valve support and are classified under the general heading of mitral valve prolapse syndrome. Prolapse of one or both of the mitral valve leaflets is believed to cause the characteristic auscultatory findings of click, murmur or honk. The timing of these sounds in systole varies with different physiologic or pharmacologic maneuvers. Variations in the onset of prolapse are associated with changes in left ventricular end-diastolic dimensions.
J M Felner; S Harwood; H Mond; W Plauth; D Brinsfield; R C Schlant
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Publication Detail:
Type:  Case Reports; Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  The American journal of cardiology     Volume:  40     ISSN:  0002-9149     ISO Abbreviation:  Am. J. Cardiol.     Publication Date:  1977 Aug 
Date Detail:
Created Date:  1977-09-02     Completed Date:  1977-09-02     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0207277     Medline TA:  Am J Cardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  206-11     Citation Subset:  AIM; IM    
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MeSH Terms
Amyl Nitrite / pharmacology
Cardiac Volume / drug effects
Heart Auscultation*
Heart Valve Diseases / diagnosis
Mitral Valve*
Myocardial Contraction / drug effects
Phenylephrine / pharmacology
Valsalva Maneuver
Reg. No./Substance:
59-42-7/Phenylephrine; 8017-89-8/Amyl Nitrite

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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