Search on: HEART SOUNDS 
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Descriptor English:   Heart Sounds 
Descriptor Spanish:   Ruidos Cardíacos 
Descriptor Portuguese:   Ruídos Cardíacos 
Synonyms English:   Cardiac Sound
Cardiac Sounds
Heart Sound
Sound, Cardiac
Sound, Heart
Sounds, Cardiac
Sounds, Heart  
Tree Number:   G09.330.380.510
Definition English:   The sounds heard over the cardiac region produced by the functioning of the heart. There are four distinct sounds: the first occurs at the beginning of SYSTOLE and is heard as a "lubb" sound; the second is produced by the closing of the AORTIC VALVE and PULMONARY VALVE and is heard as a "dupp" sound; the third is produced by vibrations of the ventricular walls when suddenly distended by the rush of blood from the HEART ATRIA; and the fourth is produced by atrial contraction and ventricular filling. 
Indexing Annotation English:   note category: do not confuse with HEART MURMURS, a disease concept
See Related English:   Heart Auscultation
Heart Murmurs
Phonocardiography
 
History Note English:   91(75); was see under HEART AUSCULTATION 1963-90; was in Cat E 1963-90 
Allowable Qualifiers English:  
DE drug effects ES ethics
GE genetics IM immunology
PH physiology RE radiation effects
Record Number:   29406 
Unique Identifier:   D006347 

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