Influence of persistent occiput posterior position on delivery outcome

Abstract

Persistent occiput posterior position contributed disproportionately to cesarean and instrumental delivery, with fewer than half of the occiput posterior labors ending in spontaneous delivery and the position accounting for 12% of all cesarean deliveries for dystocia. Persistent occiput posterior position leads to a sevenfold increase in the incidence of anal sphincter injury. Use of epidural analgesia was not related to the malposition.

Diagnostic clinico-échographique et devenir des variétés postérieures dans la présentation du sommet : étude prospective longitudinale de 350 parturientes

“…Certains facteurs sont cités comme responsables d'un taux plus élevé de variétés postérieures persistantes : une petite taille [22], un âge plus avancé [22,23], une cicatrice utérine [22], l'antécédent d'accouchement en OS [24,25], un terme plus avancé [26] et l'analgésie péridurale [26][27][28].…”

Primary Sphincter Repair: Are the Results of the Operation Good Enough?

“…Earlier studies have shown that the occipitoposterior position is a risk factor for third-degree perineal tears. 10,28 Other risk factors that have been found earlier have been primiparous, vacuum or forceps delivery, episiotomy, fetal birth weight > 4,000 g, and long duration of the second stage of labor. 1,5,[13][14][15][16] Sultan et al 29 have shown promising results of primary sphincter repair by using the overlap technique instead of end-to-end repair.…”

Maternal positioning to correct occiput posterior fetal position during the first stage of labour: a randomised controlled trial

“…At the onset of labour, an occiput posterior (OP) position occurs in approximately 25% of fetuses in the cephalic position 1, 2, 3, 4. Persistent OP at delivery occurs in approximately 10% of fetuses 5, 6.…”