A Bishop score is used to assess cervical favorability before labor induction. Which combination of cervical parameters gives the HIGHEST Bishop score component contribution?

• A Cervical dilation 3 cm, effacement 80%, station -1, consistency firm, position anterior
• B Cervical dilation 5 cm, effacement 80%, station 0, consistency soft, position mid
• C Cervical dilation 5+ cm, effacement >80%, station +1, consistency soft, position anterior ✓
• D Cervical dilation 4 cm, effacement 70%, station 0, consistency medium, position anterior

Explanation

The Bishop score assesses five parameters: dilation (0–3 points), effacement (0–3 points), station (0–3 points), consistency (0–2 points), and position (0–2 points), with maximum score of 13. A score ≥8 predicts successful induction. Each parameter in option C scores maximally or near maximally: dilation ≥5 cm (3), effacement >80% (3), station +1 (3), soft (2), and anterior (2). A high Bishop score indicates a favorable cervix that does not require cervical ripening before oxytocin.

Reference: Williams Obstetrics, 26th ed.

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Written and medically reviewed by the StethoPrep medical team.