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作者对100例临床健康的新生女婴做了临床和超声心动检查,观察到新生女婴二尖瓣脱垂的发病率是7%。3例有听诊和超声心动的脱垂证据,4例单独有超声心动的异常。7例中仅3例在听诊上有二尖瓣脱垂的所见,因而无症状的没有听诊体征的二尖瓣脱垂可能被忽略。无二尖瓣脱垂所见的93例婴儿中,91例超声心动和听诊正常,一例有符合室间隔缺损的杂音,另一例在超声心动图上见到偏离主动脉瓣,提示二瓣型主动脉瓣。在对本组的一系列观察中,发现二尖瓣脱垂是
The authors performed clinical and echocardiographic examinations on 100 clinically healthy newborn infants and observed a 7% incidence of mitral valve prolapse in newborn infants. Three patients had evidence of auscultation and echocardiographic prolapse and four had echocardiographic abnormalities alone. Only three of the seven patients had mitral valve prolapse at the auscultation, and asymptomatic mitral valve prolapse without an auscultation sign may be overlooked. Of 93 infants with no mitral valve prolapse, 91 had echocardiography and auscultation normal, one with murmur that met ventricular septal defect and the other with deviation from aortic valve on echocardiogram, suggesting that the two-flap type Arterial valve. In a series of observations of this group, mitral valve prolapse was found