Spontaneous reduction before 12 weeks' gestation and selective reduction similarly extend time to delivery in in vitro fertilization of trichorionic-triamniotic triplets

Objective To determine the prevalence and the relative benefits conferred by selective and spontaneous reduction of one or more fetuses in trichorionic triamniotic triplet pregnancies on time to delivery. Design Retrospective cohort study. Setting Academic medical center. Patient(s) IVF patients with trichorionic triamniotic triplets between January 1998 and December 2007. Intervention(s) None. Main Outcome Measure(s) Gestational length at time of delivery. Result(s) Selective reduction to twins was used in 87 of the 153 (56.9%) triplet pregnancies that did not spontaneously reduce prior to