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UMLS. CSP-HL7-ICD9CM-NCI-NDFRT-RXNORM
%
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
H H+ H1 HA HB HC HD HE HF HG HH HI HK HL HM HN HO HP HQ HR HS HT HU HV HX HY HZ
HEA HEB HEC HED HEE HEF HEI HEL HEM HEN HEP HER HES HET HEU HEV HEX HEY

heart sound

[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. ( MSH )]
UMLS (CSP) C0018820
 
Organ or Tissue Function

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