Retrospective analysis of deliveries with congenital anomalies at a tertiary center

Objective: The purpose of this study is to evaluate the incidence, anomaly type and distribution of pregnancies which were found to have congenital anomaly during prenatal period in our regions. Methods: In this study, congenital fetal anomalies detected via antenatal ultrasonograpgy and/or postnatal examination between January 2009 and December 2012. Congenital anomaly diagnoses were established by hospital ultasonography, decision records of ethic board for delivery and fetal termination, and postnatal examination. It was found that totally 8286 deliveries occurred during the study. Age, gravida, parity, abortus, living child number, weeks of gestation during diagnosis, system anomalies and sub-types seen in fetus were evaluated as maternal demographic data. Minor anomalies (such as choroid plexus cyst, hyperechogenic bowel, short femur, hyperechogenic cardiac focus, moderate pyelectasis etc.) were excluded from the study. Results: During the study, major congenital anomaly was found in 485 cases where the incidence rate was 5.85%. While single system anomaly was found in 460 cases, multiple system anomalies were seen in 25 cases. The most common single system anomaly detected was central nervous system anomaly (62.1%). Conclusion: We believe that the extensive use of advanced ultrasonography devices, pregnant women becoming more aware about routine antenatal care and the increase of the number of experienced gynecologists have been improving the detection rate of congenital anomalies.