The 2025 Post–Cardiac Arrest Care (PCAC) updates from the American Heart Association shift focus beyond return of spontaneous circulation (ROSC) toward physiology-driven stabilization, structured temperature control, early diagnostics, and refined neuroprognostication.
The central message is clear:
Survival with good neurologic outcome depends as much on post-arrest care as on high-quality CPR and defibrillation.
1. Oxygenation After ROSC – Avoid Both Hypoxia and Hyperoxia
Immediate phase:
👉 Use 100% FiO₂ initially until reliable SpO₂ or PaO₂ is measured
COR 1 | LOE B-R
Once monitoring is available:
👉 Titrate oxygen to target:
• SpO₂: 90–98%
• PaO₂: 60–105 mmHg
COR 2a | LOE B-R
⚠️ Hypoxemia should be avoided
COR 1 | LOE B-NR
Clinical rationale:
Both hypoxia and severe hyperoxia worsen neurologic injury.
Important nuance:
Pulse oximetry may underestimate hypoxemia in patients with darker skin pigmentation.
2. Ventilation Targets – Normocapnia is the Goal
👉 Maintain PaCO₂ in the normal physiologic range:
35–45 mmHg
COR 1 | LOE B-R
👉 Blood gas measurement is reasonable in mechanically ventilated patients
COR 2b | LOE B-NR
Clinical insight:
Trials of permissive hypercapnia showed no neurologic benefit and increased protocol interruption.
Avoid:
• Hypocapnia → cerebral vasoconstriction
• Hypercapnia → raised intracranial pressure
3. Hemodynamic Management – Hypotension Harms Outcomes
👉 Maintain MAP ≥65 mmHg after ROSC
COR 1 | LOE B-R
Key point:
• No evidence supports higher MAP targets routinely
• Vasopressor choice remains individualized
Clinical emphasis:
Shock is common post-arrest and strongly associated with mortality.
4. Early Diagnostic Evaluation – Broader, Earlier Imaging
ECG:
👉 Obtain 12-lead ECG as soon as feasible
COR 1 | LOE B-NR
CT imaging:
👉 Head-to-pelvis CT may be reasonable to identify:
• Arrest etiology
• CPR-related complications
COR 2b | LOE B-NR
Echocardiography / POCUS:
👉 Reasonable to evaluate reversible causes and myocardial function
COR 2b | LOE C-LD
Clinical application:
• Tamponade
• Massive PE
• LV dysfunction
• Hypovolemia
• Aortic pathology
⚠️ Must not delay critical stabilization.
5. Coronary Angiography – Stronger Emphasis
👉 Recommended prior to discharge when cardiac etiology suspected, especially with:
• Initial shockable rhythm
• Unexplained LV dysfunction
• Evidence of ischemia
Early invasive evaluation improves long-term outcomes in selected patients.
6. Temperature Control – Protocolized & Prolonged
For comatose adults after ROSC:
👉 Implement deliberate temperature control strategy
COR 1 | LOE B-R
👉 Maintain temperature between:
32°C – 37.5°C
COR 1 | LOE B-R
👉 Continue temperature control for at least 36 hours
COR 2a | LOE B-R
❌ Routine rapid infusion of cold IV fluids for prehospital cooling NOT recommended
COR 3 (No Benefit) | LOE B-R
Clinical shift:
Focus on fever prevention and controlled temperature, not aggressive cold saline boluses.
7. Seizure Management & Myoclonus – New Clarifications
EEG monitoring:
• Important for detecting nonconvulsive seizures
• Guides antiseizure therapy
👉 Trial of nonsedating antiseizure medication may be reasonable for ictal-interictal EEG patterns
❌ Suppressing myoclonus without EEG seizure correlation is NOT recommended
Clinical reasoning:
Treatment should target electrical seizure activity — not motor phenomena alone.
8. Neuroprognostication – Multimodal and Delayed
Major update:
👉 Prognostication now includes predictors of BOTH:
• Favorable outcome
• Unfavorable outcome
Biomarkers:
• Neuron-specific enolase (NSE)
• Neurofilament light chain (NfL)
May support poor prognosis when used with other modalities.
Core principle:
❗ No single test should guide withdrawal of care.
Use:
• Clinical exam
• EEG
• Imaging
• Biomarkers
• Time
9. Survivorship & Systems of Care – New Emphasis
👉 Structured assessment and referral for:
• Emotional distress (patients & caregivers)
• Cognitive and physical rehabilitation
👉 Address healthcare professional burnout
Post-arrest care now extends into long-term recovery and system well-being.
Key “DO NOT ROUTINELY DO” Updates
• No rapid cold saline boluses for cooling
• No reliance on single prognostic tests
• No aggressive hyperoxia
• No permissive hypercapnia strategies
Clinical Takeaways from Post–Cardiac Arrest Care 2025
• Targeted oxygenation and ventilation protect the brain
• Maintain MAP ≥65 mmHg consistently
• Use early imaging to identify reversible causes
• Apply structured temperature control for ≥36 hours
• Modern neuroprognostication is multimodal and delayed
• Recovery includes emotional and cognitive survivorship
Bottom Line
The 2025 PCAC updates reinforce a critical concept:
ROSC is not the endpoint — it is the beginning of intensive, physiology-guided neuroprotective care.
High-quality post–cardiac arrest management now stands alongside CPR and defibrillation as a determinant of survival.
Source:
2025 AHA Post–Cardiac Arrest Care Guidelines