Descent of the fetus is not a steady, continuous process. This normally occurs 2-3 weeks before labour in nulliparous women and may occur any time before or after onset of labour in multiparous women.ĭescent: Descent refers to the downward passage of the presenting part through the pelvis. Seven discrete cardinal movements of the fetus occur over the course of labor and delivery: engagement, descent, flexion, internal rotation, extension, external rotation or restitution, and expulsion.Įngagement: Engagement is the descent of the widest part of the fetus through the pelvic inlet. This is required for fetal descent through the birth canal.
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