_id

683a160ec782e11e38d1b179

id

3814

title

Modified Bishop Score for Vaginal Delivery and Induction of Labor

full_title

Modified Bishop Score for Vaginal Delivery and Induction of Labor

short_title

Modified Bishop Score

med_description

Predicts likelihood of successful vaginal delivery with additional parameters to the original Bishop score.

short_description

Likelihood of successful vaginal delivery.

slug

modified-bishop-score-vaginal-delivery-induction-labor

description

The Modified Bishop Score predicts likelihood of successful vaginal delivery with additional parameters to the original Bishop score.

keywords

vbac, vaginal, birth, cesarian, c section, csection, csection risk calc, c section score, induction, birth induction, cervix score

complaint

[ "Abdominal Pain" ]

formula

Addition of the selected points.

evidence

measurements

[ { "name": "ten", "unit": "ten", "error_min": "0", "error_max": "10", "warn_min": "0", "warn_max": "10", "conversion": "1", "normal_max_si": "10", "normal_max_us": "10", "normal_min_si": "0", "normal_min_us": "0", "units_si": "", "units_us": "" } ]

information

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.

refrences

{ "Clinical Practice Guidelines": [ { "href": "", "text": "" } ], "Manufacturer Website": [ { "href": "", "text": "" } ], "Original/Primary Reference": [ { "href": "https://www.ncbi.nlm.nih.gov/pubmed/7155472", "text": "Lange AP, Secher NJ, Westergaard JG, Skovgard I. Prelabor evaluation of inducibility. Obstet Gynecol. 1982;60:137–47." } ], "Other References": [ { "href": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3297470/", "text": "Laughon SK, Zhang J, Troendle J, Sun L, Reddy UM. Using a Simplified Bishop Score to Predict Vaginal Delivery. Obstetrics and Gynecology 2011;117(4):805-811. doi:10.1097/AOG.0b013e3182114ad2." }, { "href": "https://www.ncbi.nlm.nih.gov/pubmed/14199536", "text": "Bishop EH. Pelvic scoring for elective induction. Obstet Gynecol. 1964;24: 266–8. PMID 14199536." } ], "Outcomes": [ { "href": "", "text": "" } ], "Validation": [ { "href": "https://www.ncbi.nlm.nih.gov/pubmed/18757646", "text": "Newman RB, Goldenberg RL, Iams JD et al. Preterm Prediction Study: Comparison of the Cervical Score and Bishop Score for Prediction of Spontaneous Preterm Delivery. Obstet Gynecol. 2008;112 (3): 508–15. doi:10.1097/AOG.0b013e3181842087. PMID 18757646." } ], "Validations": [] }

pearls

• The Bishop Score 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 success and a score ≤6 suggests an unfavorable cervix.

usecase

Patients being evaluated for labor (including possible induction).

reasons

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

next_advice

Induction is often considered at a Modified Bishop Score of ≥8.

next_actions

next_management

diseases

[ "Pregnancy" ]

input_schema

[ { "conditionality": null, "default": null, "label_en": "Cervical Dilation", "mdcalc_info_concept": null, "name": "dil", "option_fhir_rules": null, "optional": false, "options": [ { "label": "Closed", "value": 0 }, { "label": "1-2 cm", "value": 2 }, { "label": "3-4 cm", "value": 4 }, { "label": ">4 cm", "value": 6 } ], "show_points": true, "tips_en": "", "type": "radio" }, { "conditionality": null, "default": null, "label_en": "Cervical Length", "mdcalc_info_concept": null, "name": "length", "option_fhir_rules": null, "optional": false, "options": [ { "label": "3 cm", "value": 0 }, { "label": "2 cm", "value": 1 }, { "label": "1 cm", "value": 2 }, { "label": "0 cm", "value": 3 } ], "show_points": true, "tips_en": "", "type": "radio" }, { "conditionality": null, "default": null, "label_en": "Station", "mdcalc_info_concept": null, "name": "stat", "option_fhir_rules": null, "optional": false, "options": [ { "label": "-3", "value": 0 }, { "label": "-2", "value": 1 }, { "label": "-1, 0", "value": 2 }, { "label": "+1, +2", "value": 3 } ], "show_points": true, "tips_en": "", "type": "radio" }, { "conditionality": null, "default": null, "label_en": "Position", "mdcalc_info_concept": null, "name": "pos", "option_fhir_rules": null, "optional": false, "options": [ { "label": "Posterior", "value": 0 }, { "label": "Mid-position", "value": 1 }, { "label": "Anterior", "value": 2 } ], "show_points": true, "tips_en": "", "type": "radio" }, { "conditionality": null, "default": null, "label_en": "Consistency", "mdcalc_info_concept": null, "name": "con", "option_fhir_rules": null, "optional": false, "options": [ { "label": "Firm", "value": 0 }, { "label": "Moderately firm", "value": 1 }, { "label": "Soft", "value": 2 } ], "show_points": true, "tips_en": "", "type": "radio" }, { "conditionality": null, "default": null, "fhir_rules": null, "inct": null, "label_en": "Prior vaginal deliveries", "name": "vagdeliv", "optional": false, "tips_en": "", "type": "textbox", "unit": "ten" }, { "conditionality": null, "default": null, "label_en": "Pre-eclampsia", "md_calc_info_concept": null, "name": "preec", "option_fhir_rules": null, "optional": false, "options": [ { "label": "No", "value": 0 }, { "label": "Yes", "value": 1 } ], "show_points": true, "tips_en": "", "type": "toggle" }, { "conditionality": null, "default": null, "label_en": "Postdate pregnancy", "md_calc_info_concept": null, "name": "postdate", "option_fhir_rules": null, "optional": false, "options": [ { "label": "No", "value": 0 }, { "label": "Yes", "value": -1 } ], "show_points": true, "tips_en": "", "type": "toggle" }, { "conditionality": null, "default": null, "label_en": "Nulliparity", "md_calc_info_concept": null, "name": "nulliparity", "option_fhir_rules": null, "optional": false, "options": [ { "label": "No", "value": 0 }, { "label": "Yes", "value": -1 } ], "show_points": true, "tips_en": "", "type": "toggle" }, { "conditionality": null, "default": null, "label_en": "PPROM", "mdcalc_info_concept": null, "name": "pprom", "option_fhir_rules": null, "optional": false, "options": [ { "label": "No", "value": 0 }, { "label": "Yes", "value": -1 } ], "show_points": true, "tips_en": "", "type": "radio" } ]

instructions

Replaces effacement with cervical length, increases weightedness of cervical dilation and adds additional modifiers as compared with the original Bishop Score.

published

2022-04-21T20:29:20.332Z

purpose

[ "Prognosis" ]

search_terms

[ "length", "cervix", "bishop" ]

seo

{ "keywords_en": "vbac, vaginal, birth, cesarian, c section, csection, csection risk calc, c section score, induction, birth induction, cervix score", "meta_description_en": "The Modified Bishop Score predicts likelihood of successful vaginal delivery with additional parameters to the original Bishop score." }

specialty

[ "OB-Gyn" ]

departments

[ "Reproductive" ]

tags

[]

version_number

1

versions

[]

related

[ { "calcId": 3320, "short_title_en": "Bishop Score", "slug": "bishop-score-vaginal-delivery-induction-labor" }, { "calcId": 10531, "short_title_en": "Swede Score", "slug": "swede-score" }, { "calcId": 10530, "short_title_en": "RCI", "slug": "reids-colposcopic-index-rci" } ]

ismed

false

section

[ "whenToUseViewed", "pearlsPitfallsViewed", "whyUseViewed", "nextStepsViewed", "evidenceViewed" ]

cleaned_departments

[ "gynecology" ]

cleaned_use

[ "Patients being evaluated for labor (including possible induction)." ]

pub

false