Maternal morbidity associated with triplet pregnancy.

The objective of this article is to describe maternal morbidity in a large cohort of triplet pregnancies managed by a single Maternal-Fetal Medicine group over a short period of time. Records from all triplet pregnancies managed and delivered from 1992 to 1996 were reviewed for maternal outcome data. Pregnancies delivered prior to 20 weeks were excluded. During the 4-year study period, 55 triplet pregnancies were managed and delivered at this center. The most common maternal complication was preterm labor, which occurred in 42 cases (76%). Preterm premature rupture of membranes occurred in 11 cases (20%). Pregnancy-induced hypertensive complications occurred in 15 cases (27%), which included severe preeclampsia 13 (24%), hemolysis, elevated liver function tests, and low platelets (HELLP) syndrome 5 (9%), and eclampsia 1 (2%). Other maternal antenatal complications included anemia 15 (27%), acute fatty liver of pregnancy 4 (7%), gestational diabetes 4 (7%), supraventricular tachyarrhythmias 2 (4%), dermatoses 2 (4%), urinary tract infection 2 (4%), and acute disc prolapse requiring surgery in 1 case (2%). Postnatal complications occurred in 18 cases (33%), including endometritis 13 (24%), postpartum hemorrhage 5 (9%), pneumonia 2 (4%), urinary tract infection 2 (4%), and diastasis of rectus muscles requiring surgery in 1 (2%). There were no maternal deaths. Antenatal and postnatal maternal complications occur in almost all triplet gestations, suggesting that such pregnancies be managed at centers that have appropriate multidisciplinary expertise available.