- What This Cheat Sheet Covers (and What It Does Not)
- The Blueprint at a Glance: All Eight Domains
- Domain 1 Must-Knows: Physiology, Pharmacology, Genetics
- Domains 2 and 3: Core Concepts and Bradycardias
- Domains 4 and 5: Atrial Arrhythmias and SVT
- Domain 6 Must-Knows: Ventricular Arrhythmias
- Domain 7 Must-Knows: Devices
- Domain 8 Must-Knows: Scenarios and Syndromes
- Exam Format and Logistics You Can Actually Verify
- Sequencing Your Review by Domain Weight
- Frequently Asked Questions
- The ABIM Clinical Cardiac Electrophysiology certification exam has eight blueprint domains; Devices and Basic Physiology are the heaviest at 20% each.
- Supraventricular tachycardias (15%) and ventricular arrhythmias (15%) together carry as much weight as Devices plus Physiology minus ten points.
- Accessory pathway syndromes alone are 9% of the exam, the largest single topic in the blueprint.
- Cardiac tissue physiology is 10%, so refractoriness, remodeling, and arrhythmia mechanisms deserve real study time.
What This Cheat Sheet Covers (and What It Does Not)
This page is a compressed review of the Clinical Cardiac Electrophysiology (CCEP) certification examination from the American Board of Internal Medicine (ABIM), organized around the January 2026 blueprint. It is built for the final stretch of preparation, when you need to confirm that every domain has a mental hook and that you are not over-investing in low-yield corners.
It is not a substitute for a full preparation plan. If you are earlier in the process, start with the CCEP Study Guide 2026 for a structured approach, and the complete guide to all 8 CCEP content areas for a deeper walk through each domain. Use this sheet as the compact checklist that sits on top of those resources.
The Blueprint at a Glance: All Eight Domains
The single most useful thing to memorize is the weight distribution. It tells you where a question is most likely to come from and where a marginal hour of study pays off most.
| Domain | Name | Weight |
|---|---|---|
| 1 | Basic Physiology, Anatomy, Pharmacology, and Genetics | 20% |
| 2 | Clinical Arrhythmias: Core Concepts | 5% |
| 3 | Clinical Arrhythmias: Bradycardias | 5% |
| 4 | Clinical Arrhythmias: Atrial | 12% |
| 5 | Clinical Arrhythmias: Supraventricular Tachycardias | 15% |
| 6 | Clinical Arrhythmias: Ventricular | 15% |
| 7 | Devices | 20% |
| 8 | Clinical Scenarios and Syndromes | 8% |
Two patterns stand out. First, the exam is split nearly in half between science and devices on one side (Domains 1 and 7, 40% combined) and clinical arrhythmia management on the other. Second, the two smallest domains, Core Concepts and Bradycardias at 5% each, are small on paper but contain content that is tested inside other domains. Interpretation of wide QRS tachycardias and intracardiac recordings, for example, shows up again and again in the SVT and ventricular sections.
Domain 1 Must-Knows: Physiology, Pharmacology, Genetics
At 20%, this is tied for the heaviest domain, and it is where candidates who trained heavily on procedures sometimes lose points. The weight is concentrated in one place: cardiac tissue physiology at 10%.
Cardiac Tissue Physiology (10%)
This subtopic is half of the domain. Expect mechanism-driven questions rather than recall.
- Refractory periods and how they govern reentry and block
- Sympathetic nervous system and catecholamine effects on conduction and automaticity
- AV and VA conduction delay and block, including retrograde block
- Mechanisms of arrhythmias: automaticity, triggered activity, reentry
- Electrical and structural remodeling, especially as it relates to atrial substrate
- Repolarization: dispersion and reserve
- Other phenomena named in the blueprint: ACE inhibitor effects, fractionated electrograms, pseudonormalization
Cellular Electrophysiology (4%) and Pharmacology (4%)
These two are linked in practice, because drug effects are explained by channel and receptor physiology.
- Action potential phases, ion channels and currents, receptors, gap junctions
- Pharmacokinetics of antiarrhythmic agents
- Use dependence and reverse use dependence, and which drug classes show each
- Properties of individual antiarrhythmic agents, including their effects on conduction and repolarization
Cardiac anatomy and genetics each sit below 2%. Genetics questions tend to cross over into Domain 8, so link channelopathy genes to their syndromes rather than memorizing them in isolation. The blueprint separates ion-channel genetics from non-ion-channel genetics, so know that both categories exist.
Domains 2 and 3: Core Concepts and Bradycardias
Core Concepts (5%)
Most items here are individually under 2%, but they are foundational. The one subtopic at 2% is invasive electrophysiologic testing: indications and interpretation. The rest is a spread of skills that every electrophysiologist uses daily.
- Artifact recognition: distinguishing artifact from true arrhythmia on recordings
- Noninvasive testing: indications, tilt-table testing, interpretation of wide QRS tachycardias, ambulatory ECG monitoring
- Biophysics of ablation: energy delivery and lesion formation concepts
- Access and imaging: transseptal catheterization, pericardial access, cardiac and intracardiac imaging
- Laboratory systems: pacing, signal recording, and mapping systems
Bradycardias (5%)
AV block is the anchor at 3%, and the testable skill is separating AV nodal block from infranodal block. That distinction drives prognosis, the need for pacing, and how you read a tracing.
Domains 4 and 5: Atrial Arrhythmias and SVT
Together these two domains are 27% of the exam, and they are the core of a procedural electrophysiology practice.
Atrial Arrhythmias (12%)
Atrial fibrillation is 5%, atrial flutter is 4%, and focal atrial tachycardia is 3%. The blueprint lists the same management pillars repeatedly: monitoring, pharmacologic treatment, stroke prevention, cardioversion, and ablation.
Atrial Fibrillation (5%)
Know the full management arc, not just the ablation step.
- Mechanism and etiology, including remodeling
- ECG and remote monitoring strategies
- Pharmacologic rhythm and rate control
- Postoperative atrial fibrillation
- Stroke prevention and cardioversion considerations
- Catheter ablation, surgical ablation, and AV junction ablation
Atrial Flutter (4%)
The classification matters because it dictates the ablation target.
- Cavotricuspid isthmus (CTI)-dependent flutter, the classic ablation target
- Atypical right atrial flutter
- Atypical left atrial flutter, often scar- or ablation-related
- Stroke prevention and cardioversion principles shared with atrial fibrillation
Focal atrial tachycardia (3%) rewards recognition of P-wave morphology and the logic of mapping to an earliest-activation site.
Supraventricular Tachycardias (15%)
Accessory pathway syndromes are 9% of the entire exam, the largest single topic in the blueprint. If you have limited time, protect it.
Accessory Pathway Syndromes (9%)
Expect intracardiac-recording interpretation and decision questions.
- Electrophysiologic studies in ventricular preexcitation
- Orthodromic AVRT, including typical and atypical pathways
- Antidromic AVRT, including typical and atypical pathways
- Ablation of accessory pathways, including multiple pathways
- Fasciculoventricular pathways, and how they differ from true accessory pathways
- Pharmacologic treatment and monitoring
AV Nodal Reentry Tachycardia (5%)
Typical and atypical AVNRT are both tested across four angles: ECG, drug therapy, intracardiac recordings, and ablation.
- Typical versus atypical (slow-fast versus fast-slow or slow-slow) recognition
- Intracardiac recordings that distinguish AVNRT from AVRT and atrial tachycardia
- Slow-pathway ablation logic and the AV block risk it carries
Junctional tachycardias and multiple SVT mechanisms are each under 2%, but they appear as tricky differential-diagnosis items. For a sense of how demanding these domains feel in practice, see How Hard Is the CCEP Exam?
Domain 6 Must-Knows: Ventricular Arrhythmias
At 15%, this domain mixes ECG interpretation with substrate-specific ablation strategy.
Core Concepts (5%) and ECG/Ambulatory Monitoring (3%)
These are the interpretive foundation for everything else in the domain.
- ECG localization of premature ventricular complexes and ventricular tachycardia origin
- Ambulatory monitor recordings
- Indications for invasive electrophysiologic studies
- Interpretation of intracardiac recordings
- Principles of entrainment, a classic source of conceptual questions
- Pharmacologic treatment
VT by Substrate
The blueprint organizes ventricular tachycardia by the underlying heart.
- Ischemic heart disease (3%): physiology, endocardial and epicardial ablation, arrhythmias in LVAD patients, hemodynamic support during ablation
- Nonischemic cardiomyopathy (under 2%): the same themes, with epicardial substrate more prominent
- PVCs and VT in the normal heart (2%): physiology plus endocardial and epicardial ablation
- VF and polymorphic VT (under 2%): bradycardia-dependent, drug-induced, and ischemic forms, plus indications for invasive study and ablation
Domain 7 Must-Knows: Devices
Devices are 20% of the exam, equal to basic science, and the content is well-defined. Three subtopics carry most of the weight.
| Subtopic | Weight | What to master |
|---|---|---|
| ICD therapy | 7% | Indications, implantation techniques, monitoring, programming, follow-up, complications, subcutaneous ICD |
| Pacemakers | 6% | Indications, implantation, programming and follow-up, complications, leadless pacing |
| Cardiac resynchronization | 5% | Indications, implantation, monitoring, programming, leads, follow-up, complications |
| General concepts | Under 2% | Electromagnetic interference, biophysics, lead extraction, infection, automatic external and wearable defibrillators |
| Insertable loop recorders | Under 2% | Indications and interpretation |
The recurring pattern across pacemakers, ICDs, and resynchronization is the same five-part cycle: indication, implant, program, follow up, manage complications. Build one mental template and apply it to each device type. Pay particular attention to programming logic and troubleshooting, since "what do you change?" is a natural single-best-answer question format.
Domain 8 Must-Knows: Scenarios and Syndromes
This is 8% of the exam, and 6 of those 8 points are specific syndromes.
Specific Syndromes (6%)
Know the diagnostic hallmark, the risk-stratification approach, and the management principle for each.
- Long QT syndrome, Brugada syndrome, catecholaminergic polymorphic VT
- Hypertrophic cardiomyopathy, arrhythmogenic right ventricular cardiomyopathy, dilated cardiomyopathy
- Sarcoidosis as an arrhythmia substrate
- Short QT syndrome and early repolarization syndrome
- Arrhythmias in pregnancy, in athletes, and in congenital heart disease
Common scenarios (2%) cover syncope, palpitations, sudden cardiac death, ethics, and managing device advisories and recalls. The ethics and advisory items are easy to overlook, yet they are explicitly named in the blueprint. The source blueprint also notes that general internal medicine encountered in electrophysiology practice, some adolescent-focused pediatrics, and health equity content may appear.
Exam Format and Logistics You Can Actually Verify
The supplied ABIM source states that the exam consists of up to 200 single-best-answer multiple-choice questions, and that approximately 30 of them are new questions that do not count toward your score. You cannot tell which are unscored, so treat every item as real.
Details such as timing, fees, and the passing score are not established in the source material used for this cheat sheet, so check ABIM directly rather than relying on third-party figures. For related deep dives, see CCEP Passing Score, CCEP Certification Cost, CCEP Exam Dates, and CCEP Requirements. If you are weighing the decision itself, the ROI analysis and the salary guide cover the career side.
Key Takeaway
Because every question is single-best-answer, the skill being tested is discrimination between two plausible answers, not recall. Practice explaining why the second-best option is wrong; that habit is what separates borderline from comfortable performance.
Sequencing Your Review by Domain Weight
If you have a few weeks left, sequence by weight and by dependency. Physiology comes first because it underpins both pharmacology and arrhythmia mechanisms, and devices come late because they are procedural and pattern-based.
Domain 1 plus Domain 2
- Refractoriness, remodeling, and repolarization (the 10% block)
- Antiarrhythmic properties, use dependence, wide QRS interpretation
Domains 4 and 5
- Accessory pathways first (9%), then AVNRT (5%)
- Atrial fibrillation, flutter classification, focal atrial tachycardia
Domains 3 and 6
- Nodal versus infranodal block
- Entrainment, ECG localization, substrate-specific VT strategy
Domains 7 and 8
- Pacemaker, ICD, and resynchronization programming and troubleshooting
- Channelopathies and cardiomyopathy-associated arrhythmias
Finish with mixed-domain practice under exam conditions. The CCEP Exam Prep practice test platform lets you drill by domain and then switch to mixed sets, and the pass rate analysis is a useful read for calibrating how much margin to aim for. For the broader picture of the credential and the roles it opens, see CCEP jobs.
Frequently Asked Questions
Basic Physiology, Anatomy, Pharmacology, and Genetics and Devices each carry 20% of the blueprint. Supraventricular Tachycardias and Ventricular arrhythmias follow at 15% each, then Atrial arrhythmias at 12%, Clinical Scenarios and Syndromes at 8%, and Core Concepts and Bradycardias at 5% each.
Accessory pathway syndromes at 9% is the largest single topic, ahead of cardiac tissue physiology at 10% only when you consider it as a broader subtopic within Domain 1. Both deserve priority because of their size and because they are interpretation-heavy.
The ABIM source describes up to 200 single-best-answer multiple-choice questions. About 30 are new questions that do not count toward your score, and they are not identified, so answer every item as though it counts.
The eight top-level domain percentages total 100%. The nested topic percentages within domains are published qualifiers and are not intended to sum exactly, so treat them as relative emphasis rather than precise accounting.
Use the ABIM Clinical Cardiac Electrophysiology certification policy page and the ABIM exam blueprints page. The blueprint is reviewed annually and updated as needed, so check for changes before your exam. If you are new to the credential, What Is CCEP Certification? gives the background.