Is the second-born twin at high risk?

We set out to compare the outcome of the second born twin with that of the first twin to determine if any differences could be improved. We reviewed retrospectively twin deliveries from 15 April 1994 to 14 April 1996. We excluded from analysis twins weighing < 500 g, where either twin had lethal malformation, and where either twin was dead before the onset of labour. After these exclusions 246 twin pairs remained in the study. We compared perinatal mortality, and 5 minutes Apgar scores for both twins. Perinatal mortality was similar for both twins as was the 5 minutes Apgar scores. Twins < 1500 g appear at special risk. The mode of delivery has no influence on the perinatal outcome of both twins. It is concluded that the second born twin may not be at increased risk of complications compared with the first born twin. Caesarean delivery will not improve this outcome.