← Clinical Scores and Calculators
Bishop Score
Assesses cervical readiness for induction of labor
Indication
- Assesses cervical readiness for induction of labor
Criteria
- id: dilation; label: Dilation (cm); type: options; options: label: Closed; value: 0; label: 1-2 cm; value: 1; label: 3-4 cm; value: 2; label: ≥ 5 cm; value: 3
- id: effacement; label: Effacement (%); type: options; options: label: 0-30%; value: 0; label: 40-50%; value: 1; label: 60-70%; value: 2; label: ≥ 80%; value: 3
- id: station; label: Station; type: options; options: label: -3; value: 0; label: -2; value: 1; label: -1 / 0; value: 2; label: +1 / +2; value: 3
- id: consistency; label: Consistency; type: options; options: label: Firm; value: 0; label: Medium; value: 1; label: Soft; value: 2
- id: position; label: Position; type: options; options: label: Posterior; value: 0; label: Mid-position; value: 1; label: Anterior; value: 2
Interpretation
- function(score) { if (score <= 5) return { risk: score + '/13', tier: 'Unfavorable Cervix', action: 'Consider cervical ripening before oxytocin: misoprostol 25mcg PV q4h or dinoprostone (Cervidil) insert. Mechanical: Foley balloon.', color: 'red' }; if (score <= 7) return { risk: score + '/13', tier: 'Moderately Favorable', action: 'May proceed with oxytocin induction. Consider cervical ripening if nulliparous.', color: 'yellow' }; return { risk: score + '/13', tier: 'Favorable Cervix', action: 'Favorable for induction. Proceed with oxytocin. High probability of successful vaginal delivery.', color: 'green' }; }
Clinical pearls
- Bishop ≥ 8: successful induction similar to spontaneous labor
- Nulliparous women with Bishop < 6 have higher cesarean delivery rates
- Misoprostol is contraindicated in patients with prior cesarean delivery (uterine rupture risk)
Source and review
- Bishop, Obstet Gynecol 1964. Last reviewed: 2024-11-01