title: Maternal posture in second stage and fetal acid base status.
authors.forename: D P
authors.initials: DP
authors.lastname: Barton
mesh_terms: D000136:Acid-Base Equilibrium; D005260:Female; D005333:Fetus / Q000502:physiology*; D006801:Humans; D007748:Labor Stage, Second / Q000502:physiology*; D007743:Labor, Obstetric / Q000502:physiology*; D011187:Posture; D011247:Pregnancy