Obstructive sleep apnea (OSA) during pregnancy has been associated with adverse maternal outcomes. However, the effect of maternal OSA on fetal growth is less clear. This study aimed to investigate the effect of maternal OSA on placental growth and function. Dr. Lynn Keenan is a Professor of Clinical Medicine at UCSF and the program director of Sleep Medicine Fellowship. She also specializes in restorative approaches to women’s healthcare and the vice-president of IIIRRM.