Practice Quiz

CPM Certified Professional Midwife

Category - Labor, Birth, and Immediate Postpartum

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Which of the following fetal attitudes is the most advantageous for birth?
  1. The spine is bowed forward; the head is flexed with the chin touching the sternum; the arms and legs are flexed and folded on the chest; thighs are flexed into the abdomen; calves are pressed against the back of the thighs.
  2. The chin is not touching the chest; occipital frontal diameter is the presenting part.
  3. The brow of the head is the presenting part; fetus is in partial extension.
  4. The back is arched; the neck is extended; occipitomental diameter of the head is the presenting part; fetus is in full extension.
Explanation
Answer: A - A fetus in full flexion is exhibiting the most advantageous fetal attitude for birth. The fetal attitude refers to the relation of the fetal parts to each other. It also refers to the degree of flexion the fetus assumes during labor. Full flexion presents the smallest anteroposterior diameter of the skull. Option B refers to military position, where the fetus is in moderate flexion. Option C refers to brow presentation. Option D is the least advantageous for birth. This position presents the occipitomental diameter of the head, the widest skull diameter, to the birth canal.
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