Page 187 - كتاب تمريض نسا الاكتروني

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(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.
The head may become so flexed that the chin is brought into closer contact with the

fetal chest (ascent of the sinciput and descent of the occiput)

As the consequences, the smallest antero-posterior diameter (the suboccipito-

bragmatic diameter )is presented into the pelvis.

4-Internal rotation of the head:

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