title: [Comparison of obstetric and perinatal results of childbirth vertical position vs. childbirth supine position].
abstract: BACKGROUND
  Vertical position is an option to delivery to which several advantages have been attributed. This research exposes its related findings.
  
  
  OBJECTIVE
  To compare obstetric and perinatal outcomes between supine and vertical position at delivery.
  
  
  METHODS
  We performed a randomized double-blind study including healthy women assigned to the supine or upright posture (vertical) during labor with complications following the delivery in the puerperium stage. The variables evaluated were: blood loss, pain in the second period of labor and immediate postpartum, duration of the second period of labor, perineal and vaginal tears, need to forceps implement, accommodation in position and perinatal outcome.
  
  
  RESULTS
  164 patients were randomized into two groups, the vertical position (I) and the supine position (II). The losses were 5.4%, and the Caesarean rate was of 4.6%. Difference was found only for vaginal tears in the vertical posture, with a relative risk of 1.4 (CI 1.1-3.2), and shortening of the second period with a significant difference of 10 minutes on average (p < 0.05).
  
  
  CONCLUSIONS
  The upright posture during childbirth provides no improvement in perinatal outcomes and fewer obstetric conditions. It shortens the second period of labor, but it is a risk factor for vaginal tears. The best position for birth is which offers more comfort to the patient.
authors.affiliation: División de Ginecología y Obstetricia, Hospital General Dr. Aurelio Valdivieso, Servicios de Salud de Oaxaca. omarcalvoaguilar@hotmail.com
authors.forename: Omar
authors.initials: O
authors.lastname: Calvo Aguilar
authors.forename: Ana Luisa
authors.initials: AL
authors.lastname: Flores Romero
authors.forename: Victor Edilberto
authors.initials: VE
authors.lastname: Morales García
mesh_terms: D000328:Adult; D015331:Cohort Studies; D036861:Delivery, Obstetric / Q000379:methods*; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D056888:Patient Positioning / Q000379:methods*; D011247:Pregnancy; D011256:Pregnancy Outcome; D016683:Supine Position; D055815:Young Adult