The effect of maternal body mass index on embryo division timings in women undergoing in vitro fertilization.

Objective: To measure the impact of maternal body mass index (BMI) on the morphokinetics of embryo development as monitored by a time-lapse system.

Design: A retrospective chart review of in vitro fertilization (IVF) cycles from September 2016 to January 2019.

Setting: Academic IVF practice.