- CSC Exam Snapshot: What You're Actually Preparing For
- The Four CSC Domains and What Each One Demands
- Why the November 19, 2026 Weight Shift Matters
- Registration, Fees, and Test-Day Mechanics
- Confirming You're Eligible Before You Pay
- A Domain-Weighted Study Timeline
- Hitting the Passing Cut
- Where First-Time Candidates Lose Points
- Frequently Asked Questions
- The CSC exam has 90 questions (75 scored, 15 unscored) with a 55-out-of-75 passing cut.
- Therapeutic Interventions carries 43% weight - the single largest domain on the exam.
- Complications and Therapeutic Interventions together make up 76% of the current blueprint.
- Domain weights change for exams on or after November 19, 2026 - check your test date before you build a plan.
CSC Exam Snapshot: What You're Actually Preparing For
The Cardiac Surgery (Adult) certification, administered by AACN Certification Corporation, is a nursing subspecialty credential built around one specific clinical window: the first 48 hours after adult cardiac surgery. That narrow focus is what makes this exam different from general critical-care testing, and it's why generic ICU review courses often leave gaps. If you haven't already, read the full CSC Exam Domains 2026 guide to see how each content area maps to real postoperative scenarios before you start memorizing facts in isolation.
The exam itself is closed-book and delivered through PSI test centers or Live Remote Proctoring. You'll face 90 multiple-choice questions in two hours - 75 scored and 15 unscored items mixed in without being identified, so every question deserves full attention. There's no way to know which 15 don't count, which is exactly the point: it discourages skimming.
The Four CSC Domains and What Each One Demands
The current test plan - active on the January 31, 2022 version, applicable through November 18, 2026 - breaks down into four domains. Understanding not just the percentages but the clinical logic behind them is what separates candidates who pass on the first attempt from those who retake it.
Domain 1: Procedures (11%)
Covers the surgical and bedside procedures relevant to the immediate postoperative cardiac surgery patient - chest tube management, temporary pacing wires, intra-aortic balloon pump considerations, and related bedside interventions.
- Know indications and complications of common post-cardiac-surgery devices
- Understand the nurse's role during procedure-related events at the bedside
Domain 2: Complications (33%)
The second-largest domain, focused on recognizing and responding to the complications that emerge in the first 48 hours: bleeding, tamponade, dysrhythmias, low cardiac output, renal dysfunction, and neurologic events.
- Practice pattern recognition - vital sign trends, drainage volumes, hemodynamic waveforms
- Link each complication to its expected timing after surgery
Domain 3: Therapeutic Interventions (43%)
The largest domain by far and the one that decides most outcomes. This covers vasoactive medications, ventilator management, fluid and electrolyte replacement, pain and sedation strategies, and the clinical reasoning behind titrating support in a hemodynamically unstable patient.
- Master the pharmacology of common vasopressors, inotropes, and antiarrhythmics used post-op
- Practice scenario questions that require choosing between two plausible interventions
Domain 4: Monitoring and Diagnostics (13%)
Covers hemodynamic monitoring interpretation, lab value trends, and imaging or diagnostic findings specific to the postoperative cardiac surgery population.
- Be comfortable interpreting arterial lines, CVP, and PA catheter data
- Connect diagnostic findings back to the complication or intervention they signal
Key Takeaway
Because Therapeutic Interventions and Complications together account for 76% of the current exam, more than three-quarters of your study time should live in those two domains, not spread evenly across all four.
Why the November 19, 2026 Weight Shift Matters
AACN Certification Corporation is revising the CSC test plan for exams administered on or after November 19, 2026. The current weighting - Procedures 11%, Complications 33%, Therapeutic Interventions 43%, Monitoring and Diagnostics 13% - shifts to Procedures 9%, Complications 37%, Therapeutic Interventions 43%, and Monitoring and Diagnostics 11%.
Therapeutic Interventions stays the anchor domain either way, but Complications gains weight while Procedures and Monitoring and Diagnostics each lose a couple of points. If your scheduled test date falls close to that cutoff, confirm which blueprint applies before you commit to a study plan - see CSC Exam Dates 2026 for scheduling windows and deadlines. Practice questions and score interpretation only mean something if they're matched to the version you're actually sitting for.
Registration, Fees, and Test-Day Mechanics
The initial CSC exam fee is $150 for AACN members and $240 for nonmembers. That's a meaningful gap, so if you're not already an AACN member and plan to sit for the exam, it's worth checking whether membership dues plus the discounted fee still beat the nonmember rate - a comparison covered in more detail in the CSC Certification Cost breakdown.
On test day, you'll choose between an in-person PSI test center or Live Remote Proctoring. Both deliver the same closed-book, 90-question, two-hour exam. There's no reference material allowed, so anything you haven't internalized by test day simply isn't available to you in the room.
| Exam Detail | Specification |
|---|---|
| Total questions | 90 (75 scored, 15 unscored) |
| Time allotted | 2 hours |
| Passing cut | 55 of 75 scored questions |
| Member fee | $150 |
| Nonmember fee | $240 |
| Delivery | PSI test center or Live Remote Proctoring, closed-book |
Confirming You're Eligible Before You Pay
Before you register, verify you meet AACN's practice-hour requirements. There are two routes, and picking the wrong one on your application can slow everything down. Full detail lives in CSC Requirements 2026, but here's the shape of both paths:
- Two-year route: 1,750 hours caring for acutely or critically ill adults within the previous two years, with at least 875 of those hours in the most recent year. Of the total, 875 hours must specifically involve adults in the first 48 hours after cardiac surgery.
- Five-year route: 2,000 qualifying adult acute/critical-care hours within the previous five years, including 144 hours in the latest year. Of the total, 1,000 hours must involve the first-48-hours postoperative population.
You'll also need an unencumbered U.S. RN or APRN license and a current, nationally accredited clinical nursing specialty certification. Applicants must identify a clinical supervisor or an RN/physician colleague who can verify their eligible practice hours in the event of an audit - so keep that documentation organized well before you submit your application, not after.
A Domain-Weighted Study Timeline
Rather than dividing study time evenly across four domains, weight your schedule the way the exam weights its questions. This is one of the few places where a structured week-by-week approach genuinely helps, because it forces discipline around the two heaviest domains instead of letting easier topics eat your calendar.
Therapeutic Interventions Deep Dive
- Build a medication reference for vasoactive drips, sedation, and pain management used in the first 48 postoperative hours
- Work through scenario-based practice items focused on choosing between competing interventions
Complications Recognition
- Drill early recognition patterns for tamponade, bleeding, low cardiac output, and dysrhythmias
- Time yourself on complication-focused practice questions to build the pattern-recognition speed the two-hour format demands
Monitoring and Diagnostics
- Practice interpreting hemodynamic waveforms and lab trends in context
- Connect each diagnostic finding back to the complication or intervention it points to
Procedures and Full-Length Review
- Cover bedside procedures and device-related complications
- Take a full-length, domain-weighted practice test under timed conditions and review every missed item by domain
If time is tight, the priority order should always follow the blueprint: Therapeutic Interventions first, Complications second, then Monitoring and Diagnostics and Procedures. For a compact reference during your final review week, the CSC Cheat Sheet condenses the highest-yield facts across all four domains onto a single page.
Hitting the Passing Cut
The current passing standard is 55 correct out of 75 scored questions - the 15 unscored items don't count toward or against you, but since they're indistinguishable from scored questions, you have to treat all 90 as if they matter. A deeper walkthrough of how this cut score is set and what it means for your target accuracy is available in CSC Passing Score 2026.
In practice, that means you can miss a meaningful number of questions and still pass - but not so many that you can afford to guess your way through an entire domain. Because Therapeutic Interventions and Complications combine for 76% of the exam, a candidate who is strong in those two areas but weaker in Procedures or Monitoring and Diagnostics still has a realistic path to the 55-question threshold. The reverse is not true: being excellent at Procedures and Monitoring and Diagnostics can't compensate for weakness in Therapeutic Interventions, simply because there aren't enough questions in those smaller domains to make up the difference.
Key Takeaway
Treat Therapeutic Interventions and Complications as non-negotiable strengths. Everything else is where you can afford some uncertainty and still clear 55 of 75.
Where First-Time Candidates Lose Points
Most missed points on the CSC exam don't come from unfamiliar content - they come from misreading the clinical picture. A few recurring patterns worth guarding against:
- Treating the exam like general ICU knowledge. CSC questions are anchored to the first 48 hours after cardiac surgery specifically. A correct answer for a general critical-care patient can be wrong for this population and timeframe.
- Underestimating Therapeutic Interventions. Because it's the largest domain at 43%, weak spots here have an outsized effect on your overall score compared to any other domain.
- Studying an outdated blueprint. Anyone testing on or after November 19, 2026 needs the revised weighting, not the version that applies through November 18, 2026.
- Skipping practice under real time pressure. At roughly 80 seconds per question, untimed review builds knowledge but not exam-day pacing.
For a broader look at how these factors combine to shape overall exam difficulty, see How Hard Is the CSC Exam? and, for the aggregate outcomes across recent testing cycles, CSC Pass Rate 2026. Running full-length simulations on a CSC-specific practice platform before test day is the most direct way to close the gap between knowing the material and performing under the clock.
Frequently Asked Questions
The exam has 90 multiple-choice questions - 75 scored and 15 unscored - delivered in a two-hour window at a PSI test center or via Live Remote Proctoring.
The current passing cut is 55 correct answers out of the 75 scored questions. Unscored questions don't count toward this total, but they're not identified during the exam.
Therapeutic Interventions, at 43% of the current blueprint, is the largest domain and should receive the largest share of your study time, followed by Complications at 33%.
Yes. For exams administered on or after November 19, 2026, the weights shift to Procedures 9%, Complications 37%, Therapeutic Interventions 43%, and Monitoring and Diagnostics 11%. Confirm your test date's applicable blueprint before finalizing your study plan.
You need an unencumbered U.S. RN/APRN license, a current nationally accredited clinical nursing specialty certification, and either 1,750 qualifying hours over two years or 2,000 hours over five years, with a defined portion in first-48-hours postoperative cardiac surgery care.