A fetal head is well flexed during a normal vertex labour. Which diameter usually enters the maternal pelvis?
Correct answer: A. Suboccipitobregmatic diameter
- A. Suboccipitobregmatic diameter
- B. Occipitofrontal diameter
- C. Mentovertical diameter
- D. Submentobregmatic diameter
Explanation
Good flexion presents the suboccipitobregmatic diameter, which is favourable for vaginal birth. Extension presents larger or less favourable diameters and may make labour more difficult.
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About Normal Labour and Delivery
Normal labour covers the onset and stages of labour, cervical effacement and dilatation, fetal lie and presentation, the cardinal movements, and maternal and fetal monitoring. It includes partograph use, pain relief, normal vaginal birth, active management of the third stage, placental assessment and immediate care after delivery.
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