- CTRN Exam Domain Overview
- Domain 1: General Principles of Ground Transport Nursing Practice
- Domain 2: Resuscitation Principles
- Patient Conditions and Principles of Management
- Domain 4: Special Populations
- Exam Mechanics: Format, Fees, and Timing
- Mapping a Study Plan to the Domain Weights
- Who Actually Sits for This Exam
- Frequently Asked Questions
- BCEN's 2026 outline (effective March 30, 2026) covers 4 domains across 150 scored questions in 3 hours.
- Patient Conditions and Principles of Management is the largest domain at 43.3% (65 of 150 questions).
- Passing requires 99 correct answers out of 150 scored questions - no partial credit for domain-level performance.
- Domain weights come directly from a 2025 ground transport nursing role delineation study, not from older outlines.
CTRN Exam Domain Overview
If you're preparing for the Certified Transport Registered Nurse (CTRN) exam administered by the Board of Certification for Emergency Nursing (BCEN), the four content domains are the single most important thing to understand before you open a review book. Everything on the exam - every one of the 150 scored questions delivered through PSI - is mapped to one of these four areas. Study time that isn't aligned to the actual weighting of these domains is study time wasted.
BCEN's current outline took effect March 30, 2026, following a 2025 ground transport nursing role delineation study. That study is what produced the specific question counts you'll see below: 22, 40, 65, and 23 questions per domain, respectively, out of 150 total scored items. This article breaks down exactly what each domain covers, how heavily it's weighted, and what that means for how you allocate your remaining study hours.
| Domain | Question Count | Approx. Weight |
|---|---|---|
| 1. General Principles of Ground Transport Nursing Practice | 22 | ~14.7% |
| 2. Resuscitation Principles | 40 | ~26.7% |
| 3. Patient Conditions and Principles of Management | 65 | ~43.3% |
| 4. Special Populations | 23 | ~15.3% |
For a deeper look at how these percentages were calculated and what they mean for scoring, see our companion piece on CTRN Passing Score 2026: Exactly What You Need to Pass. And if you're still deciding whether to pursue this credential at all, our ROI analysis walks through that decision in detail.
Domain 1: General Principles of Ground Transport Nursing Practice
Domain 1 makes up 22 of the 150 scored questions (roughly 14.7% of the exam). This domain is foundational - it's less about a single organ system and more about the operational, legal, and situational realities of ground transport nursing practice. Expect questions that test judgment rather than pure recall.
General Principles of Ground Transport Nursing Practice
Candidates must demonstrate understanding of the transport environment itself: scene safety, team dynamics, communication under stress, legal and ethical considerations unique to interfacility and scene transport, and the physiologic effects of the transport environment on patients.
- Transport safety protocols and situational awareness during scene response
- Legal, ethical, and regulatory considerations specific to ground transport nursing
- Communication and handoff practices between sending and receiving facilities
- Effects of vibration, motion, and confined space on patient physiology and equipment
Because this domain is smaller in raw question count, it's tempting to deprioritize it. Don't. Questions here often hinge on scenario-based reasoning, and missing "easy" operational questions can cost you points you didn't need to lose. Our CTRN Cheat Sheet condenses many of these operational principles into a fast one-page review.
Domain 2: Resuscitation Principles
Resuscitation Principles accounts for 40 of the 150 scored questions - about 26.7% of the exam, making it the second-largest domain. This is where airway management, shock states, cardiac arrest algorithms, and hemodynamic instability live.
Resuscitation Principles
This domain tests your ability to recognize deterioration and manage it aggressively and correctly in the transport environment, where resources are more limited than in a hospital resuscitation bay.
- Airway management strategies, including surgical and rescue airways in transit
- Recognition and management of shock (hypovolemic, cardiogenic, distributive, obstructive)
- Cardiac arrest management and post-resuscitation care during transport
- Hemodynamic monitoring and interpretation in a moving, resource-limited setting
Because Domain 2 and Domain 3 together account for the majority of your scored questions, candidates who are strongest in critical care or emergency backgrounds often find this section familiar territory - but the CTRN exam frames these topics specifically through a transport lens, not a bedside ICU lens. That distinction matters more than most candidates expect.
Key Takeaway
Don't study resuscitation content generically. Focus on how interventions change when you're managing a patient in a moving vehicle with limited equipment and no immediate backup - that's the actual exam angle.
Domain 3: Patient Conditions and Principles of Management
This is the domain that decides whether you pass. Patient Conditions and Principles of Management is the largest content area on the CTRN exam at 43.3% - 65 of the 150 scored questions. No other domain comes close to this weight, and that single fact should shape more of your study plan than anything else in this article.
Patient Conditions and Principles of Management
This domain spans the full range of medical, surgical, and traumatic conditions a ground transport nurse may encounter, along with the management principles for each.
- Trauma assessment and management across body systems
- Medical emergencies: cardiac, respiratory, neurologic, endocrine, and metabolic conditions
- Toxicologic and environmental emergencies encountered during transport
- Principles of pharmacologic management appropriate to the transport setting
Given its weight, this domain alone can determine whether you clear the passing threshold of 99 correct answers out of 150. Treat it as the backbone of your review, not a section to cover alongside the others in equal proportion. If you want a full walkthrough of how to structure preparation around this reality, our CTRN Study Guide 2026 goes deeper into sequencing and resource selection.
Domain 4: Special Populations
Special Populations closes out the outline at 23 of 150 scored questions, or about 15.3% of the exam. This domain covers patient groups whose transport needs differ meaningfully from the general adult population.
Special Populations
Candidates must understand how age, physiology, and clinical context change assessment and intervention priorities during transport.
- Neonatal and pediatric transport considerations, including equipment and dosing differences
- Obstetric emergencies and high-risk maternal transport scenarios
- Geriatric-specific physiologic changes affecting assessment and management
- Bariatric, psychiatric, and other populations requiring modified transport approaches
Special Populations questions are frequently the ones candidates feel least prepared for simply because these patients appear less often in day-to-day ground transport work compared to standard adult trauma and medical calls. Don't let a lower question count convince you it's optional - 23 questions can still be the difference between passing and falling short of 99 correct.
Exam Mechanics: Format, Fees, and Timing
Understanding the domains only helps if you also understand how the exam itself is delivered and scored. Here's what governs the CTRN exam experience under BCEN's current outline:
- Total scored questions: 150, spread across the four domains covered above
- Time allotted: 3 hours
- Passing standard: 99 correct answers out of 150 scored questions
- Testing delivery: PSI test centers or live remote proctoring
- Initial exam fee: $285 for Air & Surface Transport Nurses Association (ASTNA) members, $380 for nonmembers
- Certification validity: Four years, renewable by exam or 100 continuing education contact hours
Eligibility for the CTRN exam requires a current, unrestricted RN license issued in the United States, a U.S. territory, Canada, Australia, or an accepted international equivalent. Two years of ground transport nursing experience is recommended but not a hard requirement to sit for the exam. For the full breakdown of eligibility pathways, licensing requirements, and how the experience recommendation actually works in practice, see CTRN Requirements 2026: Eligibility, Prerequisites & How to Qualify.
If cost and fee structure factor into your planning - including how ASTNA membership affects your total spend - our CTRN Certification Cost 2026 guide breaks down the full pricing picture. And if you're still mapping out when to sit for the exam relative to the March 30, 2026 outline change, check CTRN Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Mapping a Study Plan to the Domain Weights
Once you know the four domains and their exact question counts, the smartest move is to let those numbers dictate your calendar rather than studying each domain for an equal number of hours. A domain worth 65 questions should not get the same study block as one worth 22.
Patient Conditions and Principles of Management
- Work through trauma, medical, and toxicologic content systematically - this is 43.3% of your score
- Build case-based recall for high-frequency conditions before moving on
Resuscitation Principles
- Focus on airway, shock, and cardiac arrest management specific to the transport environment
- Drill algorithm-based scenarios rather than isolated facts
General Principles and Special Populations
- Cover transport operations, safety, and legal/ethical content
- Layer in neonatal, pediatric, obstetric, and geriatric transport considerations
Integrated Review
- Run full-length timed practice sessions matching the 3-hour, 150-question format
- Identify weak domains using missed-question patterns and revisit those sections
This sequencing isn't a generic study template - it's built directly around BCEN's own question distribution. Spending two of your five available weeks on the single domain that carries nearly half the exam is a direct response to how the outline is weighted, not a one-size-fits-all study habit. For a more detailed week-by-week framework and resource recommendations, our CTRN Study Guide expands on this approach.
You can also gauge your readiness domain-by-domain using full-length timed practice exams on our CTRN practice test platform, which mirrors the 150-question, 3-hour format so you're not encountering the real pacing pressure for the first time on exam day.
Who Actually Sits for This Exam
The CTRN credential is specifically oriented toward nurses working in ground transport - interfacility transfers, critical care ground ambulance teams, and scene response roles where patients are managed outside a fixed hospital unit. Because the 2025 role delineation study that produced this outline focused specifically on the ground transport nursing role, the exam content reflects the realities of that setting rather than generalized emergency or critical care nursing.
Nurses considering this path often want to know how the credential is regarded by employers and what kind of positions typically expect or prefer it. Our guides on CTRN Jobs and CTRN Salary Guide 2026 cover that ground in more detail. If you're newer to the credential itself and want the basics before diving into domain content, start with What Is CTRN Certification? or CTRN Certification for an overview of what the letters actually represent and how the process works from application through renewal.
Those weighing overall exam difficulty relative to their clinical background should also read How Hard Is the CTRN Exam? Complete Difficulty Guide 2026, which discusses how domain weighting interacts with candidate experience level. And if you want context on how other candidates have historically performed against the 99-out-of-150 passing standard, see CTRN Pass Rate 2026: What the Data Shows.
Frequently Asked Questions
There are four domains: General Principles of Ground Transport Nursing Practice, Resuscitation Principles, Patient Conditions and Principles of Management, and Special Populations, covering 150 scored questions total.
Patient Conditions and Principles of Management is the largest domain, accounting for 65 of 150 scored questions, or about 43.3% of the exam.
The current outline took effect March 30, 2026, following a 2025 ground transport nursing role delineation study conducted by BCEN.
Candidates have 3 hours to complete 150 scored questions, and the passing standard is 99 correct answers out of those 150 questions.
Two years of ground transport nursing experience is recommended but not required. You do need a current unrestricted RN license from an accepted jurisdiction.