Delayed second twin delivery: benefits and risks.

BACKGROUND: An increasing number of reports describe the delayed second twin delivery for days, or weeks with good results in the majority of the cases, and different survival rate between centers, without reported randomized controlled trials (RCTs).

OBJECTIVES: This study was designed to evaluate the suggested management of the delayed second twin delivery in the Sabah Maternity Hospital regarding its outcome, possible risks, and benefits.

PATIENTS AND METHODS: Forty-seven twin pregnancies with preterm labor (PTL) of the first fetus between 20-30 weeks, and delayed delivery of the second twin were included in this study. Studied women signed informed consent about the possible risks of keeping the live fetus in the hostile intrauterine environment, and benefits of the prolonged gestation for the second twin. Throughout the conservative treatment of the second twin, the studied women were hospitalized with regular follow up for infections, consumptive coagulopathy parameters, and wellbeing of the second twin.

RESULTS: There was significant difference in the gestational age at delivery between the first and second twin (22.6 ± 3.4 versus 34.3 ± 2.5 weeks; respectively, p = .01). There was significant difference in the birth weight between the first and second twin (435 ± 91.2 versus 1472 ± 61.5 g; respectively, p = .004). The rate of the cesarean delivery was significantly high during delivery of the second twin compared with the first twin (23.4% (11/47) versus 0% (0/47); respectively, p = .0001) with high survival rate for the second twin (85.1% (40/47)) after the delayed second twin delivery.

CONCLUSIONS: The birth weight, the gestational age, and the survival rate of the studied second twin significantly increased after the suggested management of the delayed second twin delivery.