- CSC Exam Structure at a Glance
- Domain 1: Procedures (11%)
- Domain 2: Complications (33%)
- Domain 3: Therapeutic Interventions (43%)
- Domain 4: Monitoring and Diagnostics (13%)
- The November 2026 Blueprint Change
- Question Format and Scoring
- Building a Domain-Based Study Schedule
- Frequently Asked Questions
- Therapeutic Interventions (43%) and Complications (33%) together make up 76% of the current CSC blueprint.
- The current blueprint applies through November 18, 2026; a revised weighting takes effect November 19, 2026.
- Procedures drops from 11% to 9% and Monitoring and Diagnostics drops from 13% to 11% under the new plan.
- The exam is 90 multiple-choice questions (75 scored, 15 unscored) in a 2-hour, closed-book session.
CSC Exam Structure at a Glance
The Cardiac Surgery (Adult) certification, administered by AACN Certification Corporation, tests a nurse's ability to manage the first 48 hours after adult cardiac surgery - arguably the most physiologically volatile window in the entire perioperative continuum. Unlike broader critical-care exams, CSC content is deliberately narrow: everything on the test maps back to what happens at the bedside in the immediate postoperative period, from chest tube output trends to vasoactive titration decisions.
The exam itself draws on four content domains, each weighted according to how frequently the tested knowledge or skill is actually used in practice. If you're just starting your prep, it helps to read this alongside a broader CSC study guide for passing on the first attempt and a look at how difficult the CSC exam actually is before you commit to a timeline.
Domain 1: Procedures (11%)
Procedures is the smallest domain on the current blueprint, but it's foundational - everything a candidate studies in the other three domains assumes familiarity with what actually happened in the OR and what devices/lines are present at handoff.
Procedures
Candidates must understand the surgical approach and its immediate implications for postoperative management.
- CABG (on-pump vs. off-pump) and graft-specific monitoring concerns
- Valve repair/replacement (mechanical vs. bioprosthetic) and anticoagulation implications
- Combined procedures (CABG + valve) and how they change recovery expectations
- Cardiopulmonary bypass physiology, cross-clamp time, and cardioplegia effects on early recovery
- Mechanical circulatory support insertion (IABP, VADs) as a bridge from OR to unit
Questions in this domain rarely ask you to describe surgical technique in isolation. Instead, they present a postoperative scenario and expect you to infer what the operative course implies - for example, why a patient who was on bypass for an extended time is more likely to show coagulopathy or vasoplegia on arrival.
Domain 2: Complications (33%)
Complications is the second-largest domain and, paired with Therapeutic Interventions, represents 76% of the current exam content. This is where clinical judgment under pressure gets tested most heavily.
Complications
Candidates must recognize, differentiate, and prioritize the complications unique to the early postoperative cardiac surgery patient.
- Cardiac tamponade vs. hypovolemia vs. right ventricular failure - recognizing overlapping presentations
- Dysrhythmias (postoperative atrial fibrillation, heart block, ventricular arrhythmias)
- Low cardiac output syndrome and vasoplegic shock
- Bleeding, coagulopathy, and the decision points around reoperation
- Renal, neurologic, pulmonary, and infectious complications specific to the sternotomy/bypass population
This is the domain most candidates underestimate going in. It's not enough to memorize a list of complications - the exam wants you to differentiate between clinically similar presentations and choose the next best nursing or collaborative action. A solid one-page review of must-know CSC facts can help you drill these differentials quickly in the final weeks before your test date.
Key Takeaway
When two answer choices both look "correct," Complications questions are usually testing whether you can rule out the more dangerous, time-sensitive diagnosis first - think tamponade before you think hypovolemia.
Domain 3: Therapeutic Interventions (43%)
Therapeutic Interventions is the largest domain by a wide margin, and it's the section most likely to determine whether you pass or fail. Nearly half of every scored question on the exam falls here.
Therapeutic Interventions
Candidates must know not just what to do, but when, why, and in what sequence.
- Vasoactive and inotropic titration (norepinephrine, epinephrine, milrinone, vasopressin) based on hemodynamic targets
- Fluid resuscitation vs. diuresis decisions in the early postoperative window
- Temporary pacing management after epicardial wire placement
- Mechanical circulatory support management (IABP weaning, VAD troubleshooting)
- Pain management, sedation, and ventilator weaning protocols specific to cardiac surgery recovery
- Chest tube management and criteria for surgical re-exploration
Because this domain covers so much ground, it deserves the largest share of your study time by a comfortable margin - not just a slightly larger share. If you're mapping out a prep timeline, this is the domain to schedule across multiple weeks rather than compress into a single review session.
Domain 4: Monitoring and Diagnostics (13%)
Monitoring and Diagnostics rounds out the blueprint and tests your ability to interpret data correctly - hemodynamic waveforms, labs, imaging, and rhythm strips - in the context of a fresh cardiac surgery patient.
Monitoring and Diagnostics
Candidates must interpret data trends, not just isolated values.
- Pulmonary artery catheter waveforms and derived hemodynamic values (CI, SVR, PVR)
- Arterial line and central line troubleshooting and interpretation
- 12-lead ECG changes suggestive of graft occlusion or ischemia
- Postoperative labs: coagulation panels, lactate trends, electrolyte shifts
- Chest x-ray and point-of-care findings relevant to tamponade, pneumothorax, or effusion
Monitoring questions often feed directly into Therapeutic Interventions questions in real practice - the exam expects you to connect a trending lactate or a widening CI/SVR mismatch to the correct next intervention, not just identify the abnormal value in isolation.
The November 2026 Blueprint Change
One detail every 2026 candidate needs to track: the domain weights above reflect the examination version effective January 31, 2022, which remains in place through November 18, 2026. Starting November 19, 2026, AACN shifts to a revised weighting.
| Domain | Current Weight (through 11/18/2026) | Revised Weight (from 11/19/2026) |
|---|---|---|
| Procedures | 11% | 9% |
| Complications | 33% | 37% |
| Therapeutic Interventions | 43% | 43% |
| Monitoring and Diagnostics | 13% | 11% |
Therapeutic Interventions stays the largest domain under both versions, but Complications gains weight while Procedures and Monitoring and Diagnostics lose a bit of ground. If your scheduled test date falls on or after November 19, 2026, make sure any practice tests or blueprint-mapped question banks you use are updated to the revised percentages - outdated materials built on the old weighting will misrepresent how heavily Complications is tested. This is one of several timing details covered in more depth on our CSC exam dates and testing windows page.
Question Format and Scoring
The CSC exam is delivered as a closed-book test at PSI test centers or via Live Remote Proctoring. It consists of 90 multiple-choice questions total, but only 75 are scored - the remaining 15 are unscored items being evaluated for future exams, and you won't know which is which. The exam is timed at 2 hours.
Under the current passing standard, you need 55 of 75 scored questions correct to pass. Every question on the exam is written to reflect one of the four domains above in the proportions listed, which means your overall proportion of study effort should roughly track those percentages - heaviest on Therapeutic Interventions, moderate on Complications, and lighter but not negligible on Procedures and Monitoring and Diagnostics.
Fee structure is straightforward: the initial exam fee is $150 for AACN members and $240 for nonmembers. For a full breakdown of everything you'll spend from application through renewal, see our complete CSC certification cost breakdown. If you want more detail on exactly how the scoring cut translates to your target, our passing score guide walks through it question by question.
Building a Domain-Based Study Schedule
Rather than studying topics in the order a textbook presents them, structure your review around the actual domain weights. A practical way to do this is to allocate study weeks proportionally, front-loading time on Therapeutic Interventions and Complications since together they represent 76% of the current exam.
Therapeutic Interventions
- Vasoactive titration logic and hemodynamic targets
- Mechanical support management and weaning criteria
- Chest tube and reoperation decision points
Complications
- Differentiate tamponade, hypovolemia, RV failure
- Dysrhythmia recognition and management sequencing
- Bleeding/coagulopathy escalation pathways
Monitoring and Diagnostics
- PA catheter waveform interpretation
- Lab and imaging trend analysis
Procedures + Full Review
- Surgical approach implications for recovery
- Mixed-domain practice questions timed to 2 hours
This isn't a generic study framework applied to any exam - it's built specifically around the CSC blueprint's weight distribution so your time investment matches what actually appears on test day. For a deeper walkthrough of eligibility routes before you even schedule, check CSC requirements and how to qualify. And if you're still weighing whether the credential fits your career plans, our ROI analysis of CSC certification covers that decision in detail. You can also start running timed, domain-weighted practice questions right now on our CSC practice test platform.
Key Takeaway
Don't wait until the final week to attempt full-length, domain-weighted practice exams on the practice test site - early timed runs reveal which domain is actually your weak point, not just which one feels unfamiliar.
Frequently Asked Questions
Start with Therapeutic Interventions since it carries the most weight at 43%, followed closely by Complications at 33%. Together these two domains account for 76% of the current exam content.
Yes. The weights listed above apply through November 18, 2026. Starting November 19, 2026, the revised weights are Procedures 9%, Complications 37%, Therapeutic Interventions 43%, and Monitoring and Diagnostics 11%.
The exam has 75 scored questions distributed proportionally across the four domains according to the current weighting: roughly 11% Procedures, 33% Complications, 43% Therapeutic Interventions, and 13% Monitoring and Diagnostics.
Closed-book. It's administered at PSI test centers or through Live Remote Proctoring, with no reference materials permitted during the 2-hour testing window.
See our overview pages on what CSC is, CSC meaning, and CSC certification for foundational context before diving into domain-specific prep.