Incidence of myocardial bridges in northwest Indians.
Dissection of hearts obtained at autopsy from 150 adults (110 males, 40 females) and 15 children (10 males, 5 females) showed an incidence of myocardial bridges over the coronary arteries to be 34.5% in the male and 32.5% in female adults (p = NS); in children the incidence was 40% in either sex. A similar incidence was found in the neonates. Such bridges were also present in the fetuses. A bridge over the anterior interventricular artery could be identified as early as 60mm C.R. stage. An examination of serial sections of 3 early embryos indicated that the coronary arteries develop epimyocardially. The myocardial bridges seem to develop concurrently with the development of myocardium. In 63% instances a bridge was present on the anterior interventricular artery, other arteries were involved less frequently.
Sahni
D
D
Department of Anatomy, Postgraduate Institute of Medical Education and Research, Chandigarh.
Jit
I
I
D000328:Adult; D000368:Aged; D002648:Child; D003330:Coronary Vessel Anomalies / Q000453:epidemiology* / Q000473:pathology; D005260:Female; D005318:Fetal Heart / Q000473:pathology; D006801:Humans; D015994:Incidence; D007194:India / Q000453:epidemiology; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D009206:Myocardium / Q000473:pathology