Bishop Score
Ready for induction with high success rate
Did our AI summary help? Let us know.
Evidence-based calculations Used in clinical settings worldwide Regular monitoring recommended
Ready to run the numbers?
Why: This calculation helps assess important health parameters for clinical and personal wellness tracking.
How: Enter your values above and the calculator will apply validated formulas to compute your results.
Run the calculator when you are ready.
✅ Favorable Cervix (Score 9)
Ready for induction with high success rate
Click to load
⚠️ Unfavorable Cervix (Score 3)
Requires cervical ripening before induction
Click to load
📊 Moderate (Score 6)
Consider ripening vs direct induction
Click to load
👶 Multiparous Patient (Score 7)
Previous vaginal delivery improves outcomes
Click to load
📅 Post-Term (41+ weeks)
Late gestation requiring induction assessment
Click to load
Cervical Assessment
Patient Information
Frequently Asked Questions
What is a good Bishop Score for induction?
A score of 8 or higher is considered favorable and associated with high induction success rates (similar to spontaneous labor). Scores of 6-7 are moderate, while scores below 6 suggest cervical ripening may improve outcomes.
What is cervical ripening?
Cervical ripening is the process of softening and preparing the cervix for labor. Methods include prostaglandin medications (misoprostol, dinoprostone), mechanical dilation (Foley catheter), or laminaria. This typically takes 12-24 hours before active induction can begin.
Does parity affect Bishop Score interpretation?
Yes. Women who have had previous vaginal deliveries (multiparous) generally have higher induction success rates even with lower Bishop Scores. The cervix in multiparous women tends to dilate more readily.
For informational purposes only — not medical advice. Consult a healthcare professional before acting on results.
🏥 Health Facts
— WHO
— CDC
What is the Bishop Score?
The Bishop Score is a clinical assessment tool developed by Dr. Edward Bishop in 1964 to evaluate cervical readiness for labor induction. By examining five key characteristics of the cervix—dilation, effacement, station, consistency, and position—healthcare providers can predict the likelihood of successful vaginal delivery and determine whether cervical ripening is needed before beginning induction with oxytocin.
5 Components
Comprehensive cervical assessment evaluating dilation, effacement, station, consistency, and position.
Components:
- Cervical dilation (0-3 pts)
- Effacement % (0-3 pts)
- Fetal station (0-3 pts)
Success Prediction
Higher Bishop Scores correlate strongly with successful vaginal delivery after induction.
Success Rates:
- Score ≥8: ~95% success
- Score 6-7: ~80% success
- Score ≤5: Variable rates
Treatment Guidance
Determines whether cervical ripening agents are needed before oxytocin induction.
Ripening Options:
- Prostaglandins (PGE2, PGE1)
- Mechanical methods (Foley)
- Membrane sweeping
How is the Bishop Score Calculated?
The Bishop Score is calculated through cervical examination by a healthcare provider. Each of the five components is assessed and assigned a point value based on the findings. The total score (0-13) guides clinical decision-making about labor induction approach.
📊 Scoring Components
| Component | 0 Points | 1 Point | 2 Points | 3 Points |
|---|---|---|---|---|
| Dilation | Closed | 1-2 cm | 3-4 cm | ≥5 cm |
| Effacement | 0-30% | 40-50% | 60-70% | ≥80% |
| Station | -3 | -2 | -1, 0 | +1, +2 |
| Consistency | Firm | Medium | Soft | - |
| Position | Posterior | Mid | Anterior | - |
⚠️ Clinical Note: The Bishop Score should be assessed by a trained healthcare provider during a sterile vaginal examination. This calculator is for educational purposes and clinical decision support.
When is the Bishop Score Used?
The Bishop Score is a critical tool in obstetric practice for planning labor induction. It's used whenever a decision about induction needs to be made, helping providers and patients set realistic expectations about the induction process.
Pre-Induction Assessment
Evaluate cervical readiness before planned labor induction to determine the best approach.
Decisions Guided:
- Direct oxytocin vs. ripening first
- Expected duration of induction
- Success rate counseling
Post-Term Pregnancy
Assess readiness when pregnancy extends beyond 41 weeks to plan timing and method of delivery.
Considerations:
- Timing of intervention
- Cervical ripening needs
- Patient preferences
Medical Indications
When medical conditions require delivery, assess cervical readiness to plan approach.
Conditions:
- Preeclampsia/hypertension
- Gestational diabetes
- Fetal growth concerns
Bishop Score Interpretation
Understanding how to interpret Bishop Score results is essential for clinical decision-making about labor induction.
📊 Score Categories
Favorable Cervix (Score ≥8)
High likelihood of successful vaginal delivery. Direct oxytocin induction is appropriate. Expected induction success rate: 85-95%.
Moderate (Score 6-7)
Good candidate for induction. May benefit from cervical ripening depending on urgency. Expected success rate: 70-85%.
Unfavorable Cervix (Score ≤5)
Cervical ripening strongly recommended before oxytocin. Higher risk of failed induction and cesarean delivery without ripening.
Frequently Asked Questions
Clinical Questions
What Bishop Score is needed for successful induction?
A Bishop Score of 8 or higher is considered favorable and associated with high success rates (85-95% for vaginal delivery). Scores of 6-7 are moderate, and scores of 5 or below typically require cervical ripening before oxytocin induction to improve outcomes.
What happens if my Bishop Score is low?
A low Bishop Score (≤5) indicates an "unfavorable" cervix for induction. Your provider will likely recommend cervical ripening before starting oxytocin. Options include prostaglandin medications (like misoprostol or dinoprostone) or mechanical methods (like a Foley catheter balloon). This process typically adds 12-24 hours before active induction begins.
How is the Bishop Score different for first-time mothers?
First-time mothers (nulliparous women) typically need higher Bishop Scores for equivalent success rates compared to women who have delivered vaginally before (multiparous). Some providers use a modified scoring system that accounts for parity. Our calculator includes parity considerations in success rate estimates.
Patient Questions
Can my Bishop Score change naturally?
Yes, the cervix naturally ripens as you approach your due date. Bishop Scores typically improve in the final weeks of pregnancy. Some women will go from an unfavorable to favorable cervix spontaneously. Walking, nipple stimulation, and intercourse (if membranes are intact) may help, though evidence is limited.
Is the cervical exam for Bishop Score painful?
The cervical examination may cause some discomfort or pressure, but it's typically brief (less than a minute). Let your provider know if you experience significant pain. Some providers offer exams in more comfortable positions or can use smaller fingers for examination.
Related Calculators
Fundal Height Calculator
Assess fetal growth through fundal height measurement correlation
HealthhCG Levels Calculator
Analyze hCG progression and doubling time in early pregnancy
HealthMCA Calculator
Assess fetal anemia risk through MCA Doppler peak systolic velocity
HealthNuchal Translucency Calculator
Assess chromosomal abnormality risk from NT ultrasound measurement
HealthA-a Gradient Calculator
Calculate the Alveolar-arterial (A-a) oxygen gradient to assess oxygenation efficiency. Helps differentiate between pulmonary and extrapulmonary causes of...
HealthAdvanced ABI Calculator (Ankle-Brachial Index)
Comprehensive Ankle-Brachial Index calculator with multiple measurement methods, advanced PAD risk assessment, exercise testing capability, cardiovascular...
Health