Page 60 - 33Elctronic Book (3) Normal Labor

7-External rotation.

1-Descent:

▪ It refers to the progress of the presenting part through the pelvis.

▪ The degree of descent is measured by the station of the presenting part.

▪ Little descent occurs during the latent phase of first stage of labor &acceleration

in the active phase when the cervix has dilated to 5-7cm

(Descent of the fetal head-Rule of fifth)

2- Engagement:

▪ It is the passage of the biparietal diameter of the head below the pelvic brim.

3- Increased flexion of the head:

▪ Occur early in the process of descent as the head meets resistance from the

soft tissue of the pelvic, the pelvic floor, and the cervix.

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