OP29.03: One for two: fetal and placental weights of MC and DC twins

Abstract

To describe the longitudinal changes in maternal cardiac function during uncomplicated twin pregnancy. Materials and methods: In a series of twin viable pregnancies cardiac output (CO) and total vascular resistance (TVR) were longitudinally calculated at 20-23, 26-29 and 30-33 weeks of gestation. Cardiac output was measured by continuous-wave Doppler at the aortic valve. Patients were excluded with any of the following: delivery prior to 36 completed weeks; ascertained fetal anomalies; history of maternal disease or hypertensive disorder, perinatal death, IUGR of one or both newborns (birthweight < 5th percentile); maternal preeclampsia. In all cases delivery was electively performed by scheduled Cesarean section between 36 and 37 weeks. Results: Overall nine pregnancies were enrolled in the study.