C-OBE exam guide
About the Obstetric Emergencies (C-OBE) exam
C-OBE assesses rapid risk recognition, prevention, prioritization, team activation, and treatment of obstetric and postpartum emergencies. Three quarters of the blueprint is emergency identification and management, spanning medical crises, intrapartum and postpartum events, infection and sepsis, resuscitation, hypertension, and hemorrhage.
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C-OBE exam format at a glance
- Questions
- 125
- 100 scored; 25 unscored
- Time
- 2 hours
- Delivery
- Computer-based at a testing center or through live remote proctoring
Knowledge to review for the C-OBE exam
These foundations support the practical tasks in the official examination matrix.
Risk assessment and prevention
- Medical, surgical, obstetric, pregnancy, mental-health, substance-use, social, and inequity-related risk; ongoing reassessment; physical examination; laboratory, imaging, fetal, and hemodynamic data
- Early-warning systems, hemorrhage and hypertension readiness, infection prevention, thromboembolism prevention, medication safety, blood-bank preparation, drills, and escalation pathways
Obstetric and postpartum emergencies
- Hemorrhage, uterine atony, retained tissue, laceration, rupture, inversion, accreta spectrum, abruption, previa, coagulopathy, hypertensive crisis, eclampsia, cardiomyopathy, embolism, stroke, respiratory failure, sepsis, shock, trauma, and anesthesia complications
- Shoulder dystocia, cord prolapse, uterine rupture, fetal compromise, operative birth complications, maternal collapse, perimortem birth, and massive transfusion
Team response and recovery
- Algorithms, role clarity, closed-loop communication, checklists, cognitive aids, medication and blood safety, documentation, handoff, debriefing, disclosure, quality improvement, trauma-informed care, family support, and follow-up
- Ethics, consent, scope, equity, deterioration escalation, interprofessional coordination, and systems learning
C-OBE examination matrix
The percentages below are the approximate exam-score weights published by National Certification Corporation (NCC). Use them to allocate study time, then adjust for your own weak areas.
20%
Assessment and Prevention
Identify pre-existing and pregnancy risks, perform ongoing surveillance, interpret diagnostic data, and apply prevention and readiness strategies.
- Assess medical, surgical, obstetric, current-pregnancy, mental-health, substance-use, social, and disparity-related risk
- Use ongoing maternal, fetal, physical, laboratory, imaging, and early-warning findings to detect deterioration
- Apply hemorrhage, hypertension, infection, thrombosis, medication, transfusion, anesthesia, and emergency-readiness measures
75%
Identification, Management, and Treatment of Obstetric and Postpartum Emergencies
The dominant domain tests rapid recognition, stabilization, treatment, escalation, and reassessment of time-critical obstetric and postpartum emergencies.
- Manage hemorrhage, atony, retained tissue, laceration, rupture, inversion, abnormal placentation, abruption, previa, coagulopathy, shock, and massive transfusion
- Respond to hypertensive crisis, eclampsia, sepsis, thromboembolism, amniotic fluid embolism, cardiac disease, stroke, respiratory failure, trauma, and anesthesia emergencies
- Manage shoulder dystocia, cord prolapse, uterine rupture, fetal compromise, operative complications, maternal arrest, resuscitative hysterotomy, and post-event critical care
5%
Professional Practice
Apply social determinants, safety, mortality and morbidity review, teamwork, ethics, documentation, quality, and systems improvement.
- Use role clarity, closed-loop communication, escalation, chain-of-command, cognitive aids, handoffs, and debriefing
- Apply consent, autonomy, scope, documentation, disclosure, trauma-informed care, equity, culture, and family support
- Use mortality and morbidity review, event reporting, evidence, quality improvement, drills, and system redesign
How to use this C-OBE diagnostic
The 15 questions sample all three official categories, with most devoted to emergency recognition and management. For each case, identify the immediate threat, trigger criteria, first action, parallel team tasks, medications and procedures, blood-product or operative escalation, fetal implications, response targets, and post-event care.
High-yield C-OBE study priorities
Priority 1
Give three quarters of practice to emergencies
The 75% emergency domain should drive preparation. Use timed scenarios requiring recognition, first action, team activation, parallel tasks, medication or procedure sequence, escalation, and response evaluation.
Priority 2
Know hemorrhage as a system response
Connect quantitative blood loss, cause, uterotonics, tranexamic acid, examination, tamponade, procedure or surgery, massive transfusion, calcium, warming, coagulation, and ongoing reassessment.
Priority 3
Practise maternal collapse algorithms
Rehearse left uterine displacement, high-quality CPR, airway, defibrillation, reversible causes, team roles, fetal considerations, and time-critical resuscitative delivery without delaying core resuscitation.
Priority 4
Use prevention and debriefing to close the loop
Study risk stratification, readiness, early-warning triggers, escalation, post-event surveillance, disclosure, trauma support, documentation, multidisciplinary review, and system improvement.
C-OBE exam FAQ
How many questions are on the C-OBE exam?
The 2026 NCC candidate guide lists 125 questions: 100 scored items and 25 unscored pretest items embedded throughout the examination.
How long is the C-OBE exam?
NCC allows 2 hours to complete the examination.
How is the C-OBE content outline weighted?
The guide assigns 20% to Assessment and Prevention, 75% to Identification/Management/Treatment of Obstetric and Postpartum Emergencies, and 5% to Professional Practice.
What does the Obstetric Emergencies exam emphasize?
It emphasizes risk recognition, prevention, and rapid interprofessional response to obstetric and postpartum emergencies, followed by reassessment, recovery, and systems learning.
How is the C-OBE exam delivered?
NCC offers computer-based testing at test centers and through live remote proctoring. Confirm current identification, technical, scheduling, and testing-space requirements directly with NCC.
Does this diagnostic predict whether I will pass?
No. A 15-question diagnostic is a low-confidence baseline, not a validated pass prediction. Use it to identify review priorities and confirm current exam requirements with NCC.
Is MedPorium affiliated with NCC?
No. MedPorium is an independent education platform and is not affiliated with or endorsed by the National Certification Corporation.
Review and official source
Clinical reviewer: P. S. Norman
Exam format and matrix information were checked against the 2026 NCC Obstetric Emergencies candidate guide. Source reviewed October 11, 2026.
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