Estimate the likelihood of successful labor induction.
Cervical Exam Findings
Induction Success Prediction
Bishop Score0/ 13
Cervical StatusUnfavorableInterpretation
Cervical ripening agents may be needed for successful induction.
A score of ≥ 8 suggests a favorable cervix
About this calculator
Overview
The Bishop score (also known as the pelvic score) is a pre-labor scoring system to assist in predicting whether induction of labor will be successful. It assesses five components of the cervix and fetal position to determine how 'ripe' the cervix is for delivery.
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Pro Tips
Cervical station is measured relative to the maternal ischial spines.
Anterior position is the most 'favorable' position for labor.
Dilation is the most important component of the score.
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Fun Facts
"A Bishop score of 8 or more is generally considered to be highly predictive of a successful vaginal delivery."
"If the score is 5 or less, the likelihood of a successful induction is lower; cervical ripening agents may be used."
"Modified Bishop scores sometimes use only the first three criteria (Dilation, Effacement, Station)."
"High scores are associated with shorter induction times."
Formula: Points (0-3) are assigned based on Dilation, Effacement, Station, Consistency, and Position.
