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Objective

Multifetal Pregnancy Reduction (MPR) is a technique used to reduce the fetal number with the goal of mitigating the risk of adverse outcomes, specifically preterm birth (PTB). MCDA twins are subject to unique complications which contribute to adverse pregnancy outcomes. Our objective was to compare outcomes of elective reduction of MCDA twins by radiofrequency ablation (RFA) to planned ongoing MCDA twins.

Study Design

We performed a retrospective review of 315 MCDA twin gestations that underwent first-trimester ultrasound at two practices within one institution. Planned elective reduced twins were compared with planned ongoing MCDA twins. The primary outcome was PTB less than 34 weeks. Secondary outcomes included PTB< 37 weeks, unintended loss, and adverse maternal and neonatal outcomes.

Results

Among 375 identified MCDA twins, complete follow-up data was available for 315 …