Calc Function

    • Calcs that help predict probability of a diseaseDiagnosis
    • Subcategory of 'Diagnosis' designed to be very sensitiveRule Out
    • Disease is diagnosed: prognosticate to guide treatmentPrognosis
    • Numerical inputs and outputsFormula
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    Patent Pending

    Bishop Score for Vaginal Delivery and Induction of Labor

    Predicts likelihood of successful vaginal delivery.
    When to Use
    Why Use

    Patients being evaluated for labor (including possible induction).

    • The Bishop Score for Vaginal Delivery and Induction of Pregnancy was originally developed to predict failure of elective induction in multiparous women.
    • It is commonly considered for predicting the need for caesarean section after induction and preterm labor.
    • Some centers recommend using the Modified Bishop Score which was developed in 1982 as an update to Bishop's original 1964 scoring system.
    • The scoring system was developed prior to cervical ripening agents.
    • Typically a score ≥ 8 is used to predict spontaneous vaginal delivery without induction and a score ≤5 suggests an unfavorable cervix likely to require induction.

    Predicting which women will successfully deliver with induction is difficult, and the Bishop Score is a standardized system used for evaluation.


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    Creator Insights


    Induction is often considered at a Bishop Score of ≤5.


    Addition of the selected points.

    Facts & Figures

    Score interpretation:

    • Scores ≤ 5 suggest an unfavorable cervix, and that induction may be necessary for successful vaginal delivery.
    • Scores 6-7 do not definitively predict whether or not induction will be successful. Consider induction or augmentation of labor based on clinical judgment.
    • Scores ≥ 8 suggest spontaneous vaginal delivery is more likely and augmentation or induction may be unnecessary.
    Dr. Edward H. Bishop

    About the Creator

    Edward H. Bishop, MD, (d. 1995) was one of the biggest names in obstetrics and gynecology during his lifetime. He was a pioneer in research and clinical practice, working primarily at Pennsylvania Hospital. His research involved re-evaluating exam techniques and predicting delivery outcomes.

    To view Dr. Edward H. Bishop's publications, visit PubMed