The ACLS credential from the American Heart Association is not a standalone certification exam you can take at a testing center. It is a course completion card valid for two years earned by passing a full course that includes both knowledge and skills testing. The knowledge portion—what practice tests prepare you for—is embedded in that course.
You won't show up on exam day with just a notebook and a pencil. All AHA exams are "open resource," so students may use books and handouts during the exam. This is not a memorization contest; it's an assessment of your ability to apply protocols under structured conditions.
Before you reach the knowledge exam itself, you must complete a mandatory precourse self-assessment, which requires at least 70% to pass. This gates entry to the course and ensures you have baseline competency in BLS (Basic Life Support). Many candidates underestimate this hurdle and waste course time remediating basic skills they should have drilled beforehand.
The knowledge exam itself is straightforward in format: 50 multiple-choice questions with a passing score of 84% (meaning you can miss 8 questions). Then comes the skills assessment, where you demonstrate the algorithms, interventions, and team dynamics that the knowledge exam only asks about in words. You cannot pass ACLS with written knowledge alone.
You must have your basic CPR certification credentials from the American Heart Association or another organization recognized by them, then complete a BLS Provider course before taking the ACLS course. If your BLS is expired or from a non-recognized provider, you will be stopped before the course even starts. Verify this in advance with your training center.
Unlike some certifications, ACLS does not publish a formal domain outline with weightings. The exam pulls from the ACLS Provider Manual and covers what a clinician responding to cardiac arrest, stroke, or acute coronary syndrome actually needs to know. These are the recurring themes:
Cardiac Arrest Rhythms & Interventions
Asystole, pulseless electrical activity (PEA), ventricular fibrillation and pulseless ventricular tachycardia. The algorithms differ, the medications differ, and the timing of interventions is unforgiving. This is the bulk of the exam.
Acute Coronary Syndrome Recognition & Management
12-lead ECG interpretation basics, troponin and other biomarkers, the role of aspirin and other medications, and when to activate percutaneous coronary intervention. Candidates often treat this as secondary material; it is not.
Stroke Recognition & Response
Time windows for thrombolytics, Cincinnati Stroke Scale or similar assessment tools, contraindications to treatment. The exam expects you to know that "golden window" is 3-4.5 hours for IV thrombolytics (narrower for mechanical thrombectomy).
Pharmacology at Speed
Epinephrine dosing, amiodarone vs. lidocaine, atropine for bradycardia, adenosine for supraventricular tachycardia. The exam includes drug names, concentrations and routes. You will have access to reference cards, but knowing these cold saves time and confidence under pressure.
Airway Management & Ventilation
Bag-mask ventilation basics, supraglottic airway insertion, endotracheal intubation, capnography interpretation. The exam does not go deep into intubation technique, but it covers decision-making: when to insert an advanced airway, signs of correct placement, what waveform capnography tells you.
Team Dynamics & Communication
Leadership during cardiac arrest, closed-loop communication, role designation. The AHA has reemphasized this in recent guidelines, and the exam includes questions about who speaks, how roles rotate, and what happens when the first-line medication does not work.
Memorizing without reasoning. Candidates who approach ACLS as a lookup table (what drug for what rhythm?) often fail the scenario questions. The exam asks why you give epinephrine every 3–5 minutes, not just that you do. Understand the pathophysiology underneath the algorithm.
Confusing old and new guidelines. The 2020 AHA guidelines changed several things: AED use in pregnant women, timing of first epinephrine dose, removal of atropine for cardiac arrest. If you studied ACLS more than three years ago, you likely memorized deprecated recommendations. Review the current manual.
Overlooking stroke assessment. Candidates who work in cardiac units sometimes treat stroke questions as filler. The exam weight is smaller, but stroke recognition is clinically critical and commonly tested. Know the Cincinnati Stroke Scale, the NIHSS basics, and absolute contraindications to thrombolytics (recent surgery, coagulopathy, intracranial hemorrhage).
Ignoring the open-resource rule. Because you can reference materials, some candidates skip studying details like drug concentrations. That is a trap. You will waste precious seconds hunting through a manual during the exam. Pre-drill the high-frequency facts.
Starting point | Typical prep time | Strategy |
|---|---|---|
BLS certified, recent clinical experience | 1–2 weeks | Use practice tests to validate your working knowledge, focus on protocol updates and the scenario-heavy questions. |
BLS certified, minimal hands-on exposure (e.g., administrator role) | 2–3 weeks | Work through the Provider Manual systematically, then use practice tests to fill gaps. Drug dosing and rhythm interpretation will be your slowest burn. |
Retaking after a fail | 1 week | Use your missed questions to identify domain gaps. If available, ask your instructor which topics tripped up most candidates. |
No BLS yet | 3–4 weeks total | Ensure BLS is rock solid before starting ACLS. ACLS builds on BLS fundamentals; weak BLS basics will cost you on the knowledge exam. |
These are estimates. Your pace depends on current role (ICU nurse vs. administrator), how much time you can dedicate weekly, and whether you are taking an in-person course or a blended option. Blended courses require more self-direction in pacing.Preparing for another exam? Try our free ACSM CPT practice test.
Take a pretest early, untimed. Your first practice exam should show you where you stand, not pressure you to pass. Use it to identify which domain (cardiac arrest, stroke, ACS, pharmacology, airway) is weakest.
Read explanations, not just answers. A practice test app that says "C is correct" without explaining why or when you would pick C is a waste of time. ACLS questions almost always have plausible wrong answers; understanding the reasoning behind each choice is the differentiator.
Build a drug sheet. Create a single-page reference listing epinephrine, amiodarone, lidocaine, atropine, adenosine, and vasopressin with dose, route, repeat interval, and one-line indication. Drill this weekly. You will have access to it during the exam, but speed matters.
Practice with scenarios, not just definitions. A question like "A 68-year-old male is in asystole. What is your first drug?" is weaker than "A 68-year-old male in asystole has had two minutes of high-quality CPR. Epi was given 1 minute ago. What is your next action?" The second version mirrors the exam.
Take timed mock exams close to test day. If the exam is Saturday, run a full 50-question practice test Friday afternoon under time pressure, in a quiet space, with your materials at hand the way they will be during the exam.
The AHA updates its guidelines periodically, most recently in 2020. The next major update is not yet announced, but interim guidance can shift. Changes in the past decade have included:
Removal of atropine for cardiac arrest (kept for bradycardia)
Introduction and refinement of post-arrest care protocols
Updated stroke thrombolytic time windows
Emphasis on team dynamics and closed-loop communication in the course content
Your training center is responsible for teaching current guidelines, but practice tests and older study materials online are often outdated. Before enrolling, confirm your course and testing resources align with the current AHA guideline year.
Last updated on Oct, 8 2026
