On October 22, 2025, the American Heart Association published the 2025 Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care — the first comprehensive update to resuscitation science since 2020. Built in collaboration with the International Liaison Committee on Resuscitation (ILCOR), the new guidelines include 760 specific recommendations across adult, pediatric, and neonatal life support.
If your ACLS certification is due for renewal, or if you are recertifying now, these changes matter to your clinical practice.
Here is what changed, why it matters, and what it means for your recertification.
What Are the AHA/ILCOR Guidelines — and Why Do They Drive ACLS Standards?
The International Liaison Committee on Resuscitation (ILCOR) is the international scientific body that continuously reviews resuscitation research and publishes evidence-based recommendations. The American Heart Association translates those recommendations into clinical guidelines for CPR and Emergency Cardiovascular Care.
Every ACLS algorithm, drug protocol, and resuscitation sequence is built on these guidelines. When ILCOR and the AHA update their science, the clinical standard changes — and any ACLS course that doesn’t reflect the updated guidelines is no longer teaching current practice.
Key Changes in the 2025 AHA/ILCOR Guidelines
1. A Unified 6-Link Chain of Survival
The most visible structural change in the 2025 guidelines: the previously separate Chains of Survival — adult, pediatric, in-hospital, and out-of-hospital — have been consolidated into a single, unified 6-link Chain of Survival.
The intent is clear. Resuscitation is a system. Prevention, early recognition, rapid response, high-quality CPR, advanced care, and recovery are interdependent — regardless of whether the arrest occurs in the field, on the med-surg floor, or in the ED. A single framework reinforces that continuity.
For clinicians, the practical takeaway is that recovery and post-arrest survivorship are now formally integrated into the Chain — not a downstream afterthought.
2. High-Quality CPR: Standards Sharpened, Metrics Reinforced
The 2025 guidelines reinforce and further standardize the performance metrics for high-quality CPR:
Compression rate of 100–120 per minute — now standardized across all age groups. Compression depth of 2–2.4 inches (5–6 cm) in adults. Full chest recoil between compressions. Interruptions kept to less than 10 seconds.
The emphasis on real-time team-based performance feedback during active resuscitation has been strengthened. CPR quality is not a solo metric — it is a team output that must be measured and corrected in the moment.
3. Post-Cardiac Arrest Care: The Shift to Controlled Normothermia
This is one of the most clinically significant changes in the 2025 update.
The previous emphasis on routine therapeutic hypothermia has shifted to active fever prevention and controlled normothermia. The 2025 guidelines recommend temperature control in the range of 32–37.5°C for at least 36 hours in comatose adults after cardiac arrest. All comatose post-arrest patients should have continuous temperature monitoring, with immediate treatment of any fever above 37.5°C — regardless of whether active cooling is employed.
The move is evidence-driven. Emerging trial data has challenged the routine use of aggressive hypothermia, and the updated framework reflects a more nuanced approach focused on neuroprotection through sustained temperature control rather than rigid cooling targets.
If you were trained on older TTM protocols, this is the update most likely to change what you do at the bedside.
4. Defibrillation: What the Evidence Supports
The 2025 guidelines address emerging defibrillation strategies with appropriate clinical caution.
Double sequential external defibrillation (DSD) for refractory ventricular fibrillation is acknowledged and addressed, but graded as a weak recommendation (COR 2b) — the 2025 guidelines note that usefulness has not been established. If a DSD strategy is used, a single operator should activate the defibrillators in sequence.
The headline for providers: rapid, high-quality standard defibrillation remains the priority. Emerging strategies have a place in select refractory cases, but do not replace the fundamentals.
5. Epinephrine and Vasopressor Use: No Changes to Timing or Dosing
The 2025 guidelines retain epinephrine as a Class 1 (strong) recommendation during cardiac arrest — with no changes to dosing, timing, or administration intervals.
For shockable rhythms (VF and pVT), the guidance remains: prioritize rapid defibrillation. Epinephrine follows after initial CPR and defibrillation attempts are unsuccessful. For non-shockable rhythms (PEA and asystole), administer epinephrine as soon as feasible.
What you were trained on for epinephrine in 2020 continues to be the standard. What has changed is the broader evidence context around it — the 2025 guidelines note that the optimal timing relative to defibrillation remains an area of ongoing research.
6. Team Dynamics, Systems of Care, and Mechanical CPR
The 2025 update places stronger emphasis on systems-of-care integration, structured team communication, and post-event debriefing. Mechanical CPR guidance has also been refined, with clearer framing on when mechanical devices are appropriate adjuncts to manual compressions — particularly during transport or in environments where high-quality manual CPR is not sustainable.
Closed-loop communication, role clarity, and deliberate team leadership are now more explicitly integrated into the algorithm framework and recertification expectations.
Does Your Current ACLS Certification Reflect the 2025 Updates?
If you certified or recertified before October 2025, your certification was built on the 2020 guidelines. That certification remains valid for its two-year term. However, the clinical protocols you were trained on have been updated in several meaningful ways — particularly in post-cardiac arrest care and the unified Chain of Survival framework.
Recertifying with a course built on the 2025 guidelines ensures your practice reflects current evidence and that you are prepared for the protocols in use at your facility.
Important: ACI’s ACLS courses are built on the current ILCOR and ECC standards, including the October 2025 AHA updates. When you recertify through ACI, you are learning the current clinical framework — the same one The Joint Commission expects to see reflected in your practice.
What This Means for Clinicians Due for Recertification in 2025–2026
If your ACLS certification is expiring in 2025 or 2026, recertify now — with a course that reflects the updated standards. The reasons are clinical:
Post-cardiac arrest care has meaningfully changed. The shift from aggressive hypothermia to controlled normothermia and fever prevention affects bedside decision-making.
The unified 6-link Chain of Survival formalizes recovery and post-event systems integration — concepts that hospital credentialing bodies are increasingly auditing against.
Team performance expectations are more explicitly defined — and your employer’s compliance reviewers will look for alignment with current guidelines.
Recertifying on outdated guidelines is not a compliance failure — but it does mean practicing on a framework that no longer reflects the current standard of care.
How to Confirm Your Course Is Built on 2025 Standards
Before you enroll in any ACLS recertification course, confirm the following with the provider:
Does the curriculum reflect the current ILCOR and ECC guidelines, including the October 2025 AHA updates? Is the course accredited by a recognized CME body (PIM, AMA, ANCC, ACPE)? Does the course carry AMA PRA Category 1 Credits™ or equivalent?
ACI’s courses meet every standard on this list. The curriculum is built on the current ILCOR and ECC guidelines, accredited by the Postgraduate Institute for Medicine (PIM), and awards AMA PRA Category 1 Credits™, ANCC, ACPE, and ADA credits. Compliant with Joint Commission standards on resuscitation education. Accepted in all 50 states and internationally.
Bottom Line
The 2025 AHA/ILCOR guideline updates are significant — particularly in post-cardiac arrest care, the unified Chain of Survival framework, and team-based systems of care. If your ACLS certification is due, recertify with a course that reflects the current science. Your clinical practice — and your patients — depend on it.
ACLS recertification: $109. New certification: $149.
Ready to get started? Start your course today at aciacls.com — instant digital provider card, full CME/CEU credits included, and the lowest prices online. Certify today.
