Bishop Score Calculator
Calculate the Bishop Score to assess whether the cervix is ready for labor induction. This scoring system evaluates five cervical characteristics on a 0-13 point scale. A score of 8 or higher indicates a favorable cervix with a high likelihood of successful induction.
The Bishop Score was developed by Dr. Edward Bishop in 1964 and remains the standard method for assessing cervical readiness for induction of labor. It evaluates five factors, each scored on a scale:
Scoring breakdown:
- Dilation: 0 points (closed), 1 (1-2 cm), 2 (3-4 cm), 3 (5+ cm)
- Effacement: 0 points (0-30%), 1 (40-50%), 2 (60-70%), 3 (80%+)
- Station: 0 points (-3), 1 (-2), 2 (-1 or 0), 3 (+1 or +2)
- Consistency: 0 points (firm), 1 (medium), 2 (soft)
- Position: 0 points (posterior), 1 (mid), 2 (anterior)
A total score of 8 or more is considered "favorable" and suggests that induction will likely result in a successful vaginal delivery, comparable in success rate to spontaneous labor. Scores below 6 indicate an "unfavorable" cervix, where cervical ripening agents (such as prostaglandins or a Foley catheter balloon) are typically recommended before starting oxytocin.
For first-time mothers (nulliparous women), a higher Bishop Score is generally needed for the same success rate compared to women who have given birth before (multiparous). Some modified versions of the Bishop Score include additional factors like prior vaginal deliveries.
This tool is for educational purposes only and should not replace professional medical advice.