A woman at 39 weeks with an unfavourable cervix is assessed before induction of labour. Examination reveals: cervical dilation 3 cm, effacement 60%, consistency soft, position mid, and fetal station −1. What is the Bishop score?
- A 7
- B 9 ✓
- C 8
- D 10
Correct answer: B. 9
Explanation
Using the modified Bishop scoring system: dilation 3 cm = 2 points; effacement 60% = 2 points; consistency soft = 2 points; position mid = 1 point; station −1 = 2 points. Total = 2+2+2+1+2 = 9. A Bishop score ≥8 predicts successful induction of labour; a score ≥6 is generally considered favourable. This score of 9 indicates a very favourable cervix.
Reference: Williams Obstetrics, 26th ed.
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