Cardiac arrest kills roughly 350,000 Americans outside of hospitals every year. Survival rates drop 7–10% for every minute without intervention. ACLS — Advanced Cardiovascular Life Support — is the standardized training that closes that gap. If you work in emergency medicine, critical care, or any setting where a code can happen, you've either already been through it or you're about to be required to complete it.
This guide covers exactly what ACLS certification involves, who genuinely needs it, how online ACLS programs work, and what to expect from the exam — without the fluff.
What Is ACLS?
ACLS stands for Advanced Cardiovascular Life Support. It's a set of clinical protocols and algorithms developed by the American Heart Association (AHA) to guide treatment of cardiac arrest, stroke, acute coronary syndromes, and other cardiovascular emergencies in adults.
ACLS builds on BLS (Basic Life Support). Where BLS covers CPR and AED use, ACLS adds:
- Cardiac rhythm interpretation (ECG reading)
- Advanced airway management (including endotracheal intubation and supraglottic airways)
- Defibrillation and synchronized cardioversion
- ACLS pharmacology (epinephrine, amiodarone, adenosine, atropine, and others)
- Post-cardiac arrest care
- Stroke assessment (NIHSS, BE-FAST)
- Team dynamics and resuscitation leadership
ACLS protocols are evidence-based and updated regularly through the AHA's guidelines review process. The most recent major update was in 2020, with ongoing focused updates since.
ACLS vs BLS vs PALS
These three certifications overlap but serve different roles:
- BLS: Foundational CPR for any responder. Required before ACLS.
- ACLS: Adult advanced life support. For clinicians in acute care settings.
- PALS (Pediatric Advanced Life Support): Same scope as ACLS but for pediatric patients. Often required alongside ACLS for staff who treat both adults and children.
ACLS does not replace BLS — it requires it. Most ACLS programs expect you to hold a current BLS certification before enrolling.
Who Needs ACLS Certification
ACLS is mandatory or strongly expected for a broad range of healthcare roles. If you work in any of the following settings, your employer or licensing body almost certainly requires it:
Roles Where ACLS Is Typically Required
- Emergency medicine physicians and nurses
- ICU and CCU nurses
- Paramedics and flight medics
- Anesthesiologists and CRNAs
- Cardiologists and cardiac cath lab staff
- Hospitalists
- Nurse practitioners and PAs in acute care
- Respiratory therapists
- Surgical nurses and perioperative staff
- Rapid response team members
Roles Where ACLS Is Increasingly Expected
- Dentists and oral surgeons performing sedation
- Oncology nurses (chemo can affect cardiac rhythms)
- Dialysis nurses
- Labor and delivery nurses
- Transport nurses and EMS supervisors
If you're unsure whether your role requires ACLS, check with your hospital's education department or your state's nursing/medical board. Many states have started encoding ACLS requirements into scope-of-practice rules for specific roles.
Online ACLS: What's Included and What's Not
Online ACLS programs have expanded significantly since 2020. The AHA itself now offers a blended learning format. Here's how it typically breaks down:
The Blended Learning Model
Most reputable ACLS online courses use a blended model:
- Online didactic portion — You complete the knowledge modules, rhythm interpretation practice, megacode scenarios, and written exam online, at your own pace.
- Skills session — You attend a brief in-person or skills-check session (typically 4–8 hours, sometimes shorter for renewal) at a training site. This is where you demonstrate hands-on competency with airway management, defibrillation, and megacode leadership.
The AHA's HeartCode ACLS is the most widely recognized version of this model. You complete Part 1 online, then schedule your skills check at any AHA Training Center.
Fully Online ACLS (Non-AHA)
Several non-AHA providers offer entirely online ACLS courses with no in-person skills component. These include ACLS.com, ProCPR, and National Health Care Provider Solutions (NHCPS), among others.
Important distinction: These courses are not AHA-certified. The cards they issue are accepted at many hospitals and clinics, but not all. Some institutions specifically require AHA certification. Before enrolling in a fully online program, confirm with your employer whether AHA certification is required or if other accreditations are acceptable.
What Online ACLS Covers
Regardless of provider, a standard ACLS course covers:
- BLS review (CPR, AED, ventilation)
- Airway management algorithms
- Cardiac arrest algorithms (VF/pVT, asystole/PEA)
- Bradycardia and tachycardia algorithms
- Acute coronary syndrome (ACS) sequence
- Stroke assessment and care
- ACLS pharmacology reference
- Megacode simulation (as team leader and team member)
- Post-resuscitation care
- Effective team communication
Top Courses
No specific online ACLS courses are currently listed in our course database. However, these are the most widely accepted and recognized providers worth evaluating:
AHA HeartCode ACLS (Blended)
The gold standard for hospital-based credentialing. Complete Part 1 online at your own pace, then find a local AHA Training Center for the skills check. Accepted by virtually all US hospitals. Best for nurses, physicians, and paramedics whose employers specify AHA certification.
American Red Cross ACLS
The Red Cross offers an ACLS program that is widely accepted and uses a similar blended learning model. A solid alternative to AHA, particularly in regions with strong Red Cross training infrastructure. Confirm acceptance with your employer before enrolling.
ACLS.com (Fully Online)
One of the better-regarded non-AHA online-only programs. Good for renewal when your employer accepts non-AHA cards, or for clinicians in private practice settings with more flexibility around card type. Includes lifetime access to course materials and free retakes on the exam.
ACLS Exam: What to Expect
The written component of ACLS is a 50-question multiple-choice exam. Passing score is typically 84% (42/50 correct). Questions focus on algorithm application, pharmacology dosing, rhythm identification, and appropriate interventions.
High-Yield Topics
If you're preparing for your ACLS written exam, focus time on:
- The H's and T's — reversible causes of cardiac arrest (Hypovolemia, Hypoxia, Hydrogen ion/acidosis, Hypo/hyperkalemia, Hypothermia; Tension pneumothorax, Tamponade, Toxins, Thrombosis)
- First-line drugs — epinephrine 1mg IV/IO every 3–5 minutes in cardiac arrest; amiodarone 300mg for first dose in shockable rhythms
- Algorithm decision points — specifically when to shock vs. when to give drugs first
- STEMI recognition — ST elevation criteria and the STEMI alert pathway
- Transcutaneous pacing — indications and rate settings for symptomatic bradycardia
- Adenosine dosing — 6mg rapid IV push for stable narrow-complex tachycardia, 12mg if needed
The Megacode
The megacode is the practical component of ACLS — a simulated cardiac arrest scenario where you act as team leader. Evaluators assess whether you correctly identify rhythms, call for appropriate interventions, delegate tasks, communicate clearly, and transition between algorithms as the scenario evolves.
Most candidates find the megacode more stressful than the written exam. Preparation tip: run through all four main algorithms out loud (VF/pVT, asystole/PEA, bradycardia, tachycardia) until the decision points feel automatic.
ACLS Renewal
ACLS certification is valid for two years. Renewal (recertification) is available through the same providers as initial certification.
Key differences in renewal courses:
- Shorter total time commitment (typically 4–6 hours vs. 8–12 for initial)
- Assumes baseline familiarity — less time on fundamentals
- Same written exam, same passing score
- Skills session still required for AHA renewal
Don't wait until your card expires. Many employers require a valid card on file at all times. If your card lapses, most providers treat you as a new student and charge full initial course rates.
FAQ
How long does it take to complete ACLS online?
The online portion of a blended ACLS course typically takes 4–8 hours, depending on your prior experience. If you're new to ACLS, plan for the longer end. The in-person skills session adds another 4–8 hours. Fully online programs often advertise 6–10 hours total.
Is online ACLS accepted at hospitals?
It depends on the hospital and which online program you complete. AHA HeartCode ACLS (blended) is accepted essentially everywhere. Fully online non-AHA programs are accepted at many facilities but rejected at others. Check with your HR or education department before enrolling.
Do I need BLS before taking ACLS?
Yes. A current BLS certification is a prerequisite for ACLS enrollment with AHA and most other providers. If your BLS card is expired, renew it first.
How much does ACLS certification cost?
AHA HeartCode ACLS blended learning typically runs $200–$350, which often includes the skills session fee. Fully online non-AHA programs range from $40–$150. Employer-sponsored training may cover the full cost — check with your education department.
Can ACLS be completed entirely online with no in-person component?
Yes, through non-AHA providers. However, AHA certification — the most commonly required type — requires at least a brief in-person skills check. Some AHA Training Centers offer very condensed skills sessions (as short as 2 hours) for candidates who complete all online pre-work.
What happens if I fail the ACLS exam?
Most providers allow at least one free retake on the written exam. For the skills session, evaluators typically give immediate remediation on any failed skill before a retest. Very few candidates leave without passing — the goal of the training is competency, not attrition.
Bottom Line
ACLS certification is a non-negotiable credential if you work in any acute care setting. The blended online model — online didactics plus an in-person skills check — is now the mainstream approach, and AHA HeartCode ACLS is the safest choice if your employer hasn't specified otherwise.
For renewal candidates or those in private practice with flexible card requirements, fully online programs from providers like ACLS.com offer a faster and cheaper path. Just confirm acceptance with your employer before paying.
Regardless of which program you choose, the preparation advice is the same: memorize the H's and T's, know your first-line drug doses cold, and practice the megacode decision points out loud until they're automatic. The written exam is straightforward if you've done the work. The skills component is an assessment of competency, not a gotcha — show up prepared and you'll pass.