The four-chamber view and its sensitivity in detecting congenital heart defects

We sought to determine the sensitivity of detecting congenital heart defect s with routine antenatal ultrasound including the four-chamber view in a po pulation at low risk for cardiac anomalies. Neonatal outcome and anomaly da tabases were reviewed to identify cases of morphologic cardiac defects from 1988-1992. Of 176 cases identified, 62 (35%) had routine antenatal ultraso und including the four-chamber view. Thirteen of these 62 (21%) were diagno sed by ultrasound and 18 of the 116 (15%) total defects present were seen. Of these, only 16 of 25 (64%) defects reasonably expected to be seen by the four-chamber cardiac view alone were detected. The routine ultrasound four -chamber cardiac evaluation is limited and detection depends on the type of cardiac defect present.