The Bishop Score is a tool used to assess the readiness of the cervix for vaginal delivery by assigning scores to specific characteristics of labor progress. This score helps in determining whether induction of labor is necessary or if vaginal delivery is likely.

To calculate the Bishop Score, you need to evaluate five aspects of the cervix:

- **Dilation**: Measures the opening of the cervix.
  - Closed: 0 points
  - 1-2 cm: 1 point
  - 3-4 cm: 2 points
  - >= 5 cm: 3 points

- **Position of the Cervix**: Assesses how the cervix is oriented.
  - Posterior: 0 points
  - Mid-position: 1 point
  - Anterior: 2 points

- **Effacement**: Evaluates the thinning of the cervix.
  - 0-30%: 0 points
  - 40-50%: 1 point
  - 60-70%: 2 points
  - >= 80%: 3 points

- **Station**: Determines the position of the fetal head relative to the pelvis.
  - -3: 0 points
  - -2: 1 point
  - -1, 0: 2 points
  - +1, +2: 3 points

- **Consistency**: Indicates how firm the cervix is.
  - Firm: 0 points
  - Moderately firm: 1 point
  - Soft: 2 points

Each aspect is scored individually based on the observed condition, and the scores are then summed to obtain a total Bishop Score, which can range from 0 to 13.

Interpretation of the Bishop Score assists in clinical decision-making regarding delivery:

- A total score of 7 or less suggests that the cervix is not yet favorable, and induction of labor might be necessary as the cervix may not yet be ripe for delivery.
- A total score of 8 or more indicates that the cervix is more favorable, making vaginal delivery likely, possibly without needing induction.

This scoring guide supports clinicians in evaluating cervical readiness and planning the most appropriate steps for labor management.

The Bishop Score, also known as the Bishop-Pelvic Score, is a pre-labor scoring system used to predict whether induction of labor will be necessary. It is most applicable to pregnant women nearing or at term, to assess the readiness of the cervix for induction of labor. 

The Bishop Score evaluates five parameters of the cervix: dilation, effacement, station, consistency, and position. Each parameter is scored from 0 to 2 or 3, and the scores are summed to give a total score out of 13. A higher Bishop Score indicates a higher likelihood of successful vaginal delivery following induction of labor. 

This calculator is not applicable to women with contraindications to vaginal delivery, such as placenta previa, active genital herpes infection, or transverse fetal lie. It is also not used in situations where immediate delivery is necessary, such as in cases of fetal distress or severe preeclampsia.

Bishop score for vaginal delivery