ABSTRACT
Objective To explore the value of prenatal echocardiography in diagnosis of fetal ventricular septal defect (VSD).Methods Prenatal echocardiography was performed on 3 826 fetuses,and the results were compared with those of postnatal echocardiography or autopsy findings.The diagnostic accuracy,misdiagnosis rate and missed diagnosis rate of prenatal echocardiography for VSD were calculated.Results Among 3 826 fetuses,VSD was found in 61 fetuses (61/3 826,1.59％) with prenatal echocardiography,including simple VSD in 36 fetuses (36/3 826,0.94％) and VSD complicated with other heart malformations in 25 fetuses (25/3 826,0.65 ％).According to the results of autopsy and postnatal echocardiography,the final diagnosis of VSD was found in 76 cases (76/3 826,1.99％),of which simple VSD was found in 51 cases (51/3 826,1.33 ％),VSD complicated with other heart malformations were found in 25 fetuses (25/3 826,0.65％).The diagnostic accuracy,missed diagnosis rate and misdiagnosis rate of simple VSD with prenatal echocardiography was 58.82％ (30/51),41.18％ (21/51) and 1.06‰ (4/3 775),respectively.The diagnostic accuracy,missed diagnosis rate and misdiagnosis rate of VSD complicated with other heart malformations with prenatal echocardiography was 96.00％ (24/25),4.00％ (1/25) and 0.26‰ (1/3 801),respectively.Conclusion Echocardiography has important clinical value in prenatal diagnosis of fetal VSD,which can provide important references for treatment plan and prognosis evaluation.
ABSTRACT
Purpose To probe into the value of M-mode echocardiography and spectral Doppler echocardiography in diagnosing fetal atrial premature beats.Materials and Methods Echocardiography examinations were given to the seventy-three fetuses around 16-40 gestational weeks which were found suffering from fetal arrhythmia in the clinical examinations by using M-mode echocardiography and spectral Doppler. Thirty-two of them were screened out with fetal atrial premature beats, and their ultrasonic cardiograms were analyzed. The follow-up visits were later conducted.Results Among the thirty-two cases with fetal atrial premature beats, fourteen were attacked frequently, and the other eighteen were attacked accidentally. Two cases were documented with muscular ventricular septal defect. Apart from two missing cases, the rest thirty cases were found to be recovered from arrhythmia before or after birth in the follow-up visits. The disappearance rate of atrialpremature beats in the fetuses attacked frequently by the disease before birth was clearly lower than that in those attacked accidentally (P<0.05). Muscular ventricular septal defect in the two cases were found closed after birth. Conclusion M-mode echocardiography and spectral Doppler echocardiography, as non-invasive imagining techniques to take antenatal examination of fetal arrhythmia, have advantages such as reliable, direct, convenient and can be used repetitively, therefore can provide important information for clinical treatment and prognosis.