(Abstracted from Am J Obstet Gynecol 2018;219(3):296.e1–296.e8)
Studies of early-term birth after demonstrated fetal lung maturity show that respiratory and other outcomes are worse with early-term birth (37 0/7–38 6/7 weeks) even after demonstrated fetal lung maturity when compared with full-term birth (39 0/7–40 6/7 weeks). However, these studies included medically indicated births and are therefore potentially limited by confounding by the indication for delivery.
Departments of Obstetrics and Gynecology, University of Alabama at Birmingham, Birmingham, AL (A.T.N.T.); George Washington University Biostatistics Center, Washington, DC (K.A.J.); Case Western Reserve University-MetroHealth Medical Center, Cleveland, OH (J.L.B.); Northwestern University, Chicago, IL (W.A.G.); Columbia University, New York, NY (R.J.W.); Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD (U.M.R.); University of Utah Health Sciences Center, Salt Lake City, UT (M.W.V.); University of North Carolina at Chapel Hill, Chapel Hill, NC (J.M.T.); University of Texas Southwestern Medical Center, Dallas, TX (K.J.L.); University of Pittsburgh, Pittsburgh, PA (S.N.C.); Ohio State University, Columbus, OH (J.D.I.); University of Texas Medical Branch, Galveston, TX (G.S.); Wayne State University, Detroit, MI (Y.S.); Brown University, Providence, RI (D.J.R.); University of Texas Health Science Center at Houston-Children's Memorial Hermann Hospital, Houston, TX (S.C.B.); and Oregon Health & Science University, Portland, OR (J.E.T.)