Correlation of prenatal ultrasound and postnatal outcome in meconium peritonitis.

Objective: To study the relationship between prenatal ultrasound features and postnatal course of meconium peritonitis.

Methods: Meconium peritonitis was diagnosed by prenatal ultrasound. Fetuses were treated by intrauterine paracentesis of ascites when indicated, and symptomatic newborns received surgery.

Results: Totally 17 cases were enrolled. Prenatal ultrasound findings include abdominal calcification (16/17), fetal ascites (12/17), hydramnios (9/17), pseudocyst (7/17) and dilated bowel loop (6/17). Persistent ascites, pseudocyst or dilated bowel loop are most sensitive (92%) to predict postnatal surgery (p = 0.022). The survivors have a higher gestational age at birth (36.4 vs. 33.3 weeks, p = 0.008). Persistent ascites and postnatal persistent pulmonary hypertension of the newborns significantly correlate with neonatal mortality (p = 0.029 and 0.022).

Conclusions: Prenatal ultrasound can predict the neonatal outcome in meconium peritonitis.