EMS News - AHA 2025 Guideline Updates

The American Heart Association (AHA) has released its 2025 updates to the Cardiopulmonary Resuscitation (CPR) and Emergency Cardiovascular Care (ECC) guidelines, introducing several important changes for both healthcare professionals and everyday responders. 

These evidence-based guidelines outline best practices that improve survival from cardiac arrest and other life-threatening cardiovascular emergencies.

A Quick Note for EMS Providers

These updates aim to streamline care, reduce variability in the field, and improve the chain of survival across diverse patient populations. 

Many of the changes emphasize consistency, simplified decision-making, and the continued integration of lay rescuers into time-critical care. 

At the same time, these updates are written to be accessible to the general public, who play a vital role in early recognition and CPR.

The 2025 release builds on the 2020 guidelines, refining previous recommendations and adding new guidance in areas that had not been previously addressed. 

Image from Circulation - AHA / ASA Journals

Below is a summary of several take-home messages and key updates that EMS Providers - and the public - should be aware of:

• Unified Chain of Survival: A single model now applies to all cardiac arrests, regardless of patient age or location, providing a consistent framework for recognizing emergencies and delivering timely interventions.

• Systems of Care: Greater focus on community preparedness, telecommunicator CPR (e.g., 911 Dispatchers), early warning systems, and health equity. 

• Remain in Place: It is recommended that resuscitation should be conducted where the patient is found, as long as high-quality cardiopulmonary resuscitation (CPR) can be administered safely and effectively.

• Position and Location of CPR: Quality chest compressions are improved by optimizing the rescuer’s hand placement, body mechanics (i.e., posture), and the patient’s position. When possible, CPR should be performed on a firm surface to maximize compression effectiveness. 

• Bariatric Patients: CPR for adult cardiac arrest patients with obesity should be provided by using the same techniques as for the average weight patient.

• Pediatric CPR: The two-thumb encircled or one-hand compression techniques are favored on the the two-finger method.

• Mechanical CPR: The routine use of mechanical CPR devices is not recommended for adults in cardiac arrest. However, mCPR may be considered in specific settings where the delivery of high-quality manual compressions may be challenging or dangerous.

• Assisted Ventilations: It is still considered reasonable for both professional rescuers and lay responders to give breaths - when they are willing and able to do so with an appropriate barrier device - to improve oxygenation during cardiopulmonary resuscitation at a ratio. of 30:2 for adults.

• Choking Response: the updated sequence begins with 5 back blows, followed by 5 abdominal thrusts for all patients (e.g., adults & pediatrics), and continuing to alternate until the object is removed or the person becomes unresponsive.

• Opioid Overdose Response: The guidelines reinforce the importance of rapid naloxone administration and recommends supporting public access to opioid emergency response kits. The BLS algorithm explicitly shows where naloxone fits for suspected opioid overdose during respiratory and cardiac arrest.

Additional updates covering resuscitation education, systems of care, and post-cardiac arrest management are provided in the Highlights of the 2025 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care.

Image from Circulation - AHA / ASA Journals

Why These Changes Matter

Cardiac arrest remains a leading cause of sudden death. Even small improvements in CPR technique or response consistency can dramatically impact survival. The 2025 updates aim to:

• Improve clarity during high-stress emergencies
• Increase bystander willingness to act
• Standardize care across EMS, hospitals, and the community
• Enhance oxygenation and compression effectiveness
• Support faster opioid overdose interventions

For EMS providers, these recommendations reinforce strong fundamentals, situational awareness, and the life-saving importance of early naloxone access.

What You Can Do Next

Whether you are an EMS professional or a member of the public, you play a vital role in improving survival from cardiac arrest. Here are a few ways to stay prepared:

• Review the full AHA 2025 guideline highlights
• Refresh your CPR, AED, or First Aid training
• Make sure your workplace or community organization has access to naloxone and CPR equipment
• Share these updates with colleagues, friends, or family

EMS Equipment - Mechanical Chest Compression Devices

EMS providers should be familiar with the LUCAS (Lund University Cardiopulmonary Assist System) device and similar mechanical chest compression devices as they can significantly impact the management of patients in cardiac arrest. 

Here are some key points regarding both advantages and disadvantages:

Advantages:

Consistency: Mechanical chest compression devices like LUCAS can provide consistent and uninterrupted compressions, ensuring that the quality and depth of compressions are maintained throughout resuscitation efforts. This consistency is often challenging to achieve with manual compressions, especially during prolonged resuscitation attempts.

Reduced Fatigue: Manual chest compressions can quickly lead to provider fatigue, resulting in decreased effectiveness over time. Mechanical devices alleviate this issue by delivering continuous compressions without fatigue, ensuring that high-quality compressions are maintained for extended periods.

Standardization: Mechanical devices offer standardized compression rates and depths, reducing the variability that can occur with manual compressions performed by different providers. This standardization helps optimize perfusion during cardiac arrest and improves outcomes.

Safety: Mechanical devices reduce the risk of injury to EMS providers during transport and resuscitation efforts, particularly in challenging environments such as moving ambulances or confined spaces where manual compressions may be difficult to perform safely.

Multitasking: By automating chest compressions, EMS providers can focus on other critical aspects of patient care, such as airway management, medication administration, and team coordination, without compromising the quality of compressions.

Disadvantages:

Cost: Mechanical chest compression devices like LUCAS can be expensive to purchase and maintain, potentially limiting their availability in some EMS systems. The initial investment in these devices and ongoing maintenance costs should be considered when evaluating their implementation.

Training Requirements: Proper training is essential for EMS providers to effectively use mechanical chest compression devices. Training should include device operation, troubleshooting, and integration into resuscitation protocols to ensure optimal patient outcomes.

Device Limitations: Mechanical devices may not be suitable for all patients, particularly those with certain anatomical characteristics or injuries. EMS providers must be aware of the device's limitations and know when manual chest compressions may be more appropriate.

Interruptions: Although mechanical devices aim to provide continuous compressions, interruptions may still occur during battery changes, device malfunctions, or transfer between care providers or settings. EMS providers should be prepared to quickly address and minimize these interruptions to maintain effective resuscitation efforts.

Patient Considerations: Some patients may experience discomfort or injury from mechanical chest compressions, such as rib fractures or skin abrasions. EMS providers should assess each patient's condition and adjust device settings or techniques accordingly to minimize potential harm.

Overall, mechanical chest compression devices like LUCAS offer several advantages in the management of patients in cardiac arrest, including consistency, reduced provider fatigue, standardization, safety, and the ability to multitask. 

However, EMS providers must also be aware of the associated disadvantages, such as cost, training requirements, device limitations, interruptions, and patient considerations, to ensure appropriate and effective use in clinical practice.

Further Reading:

Bledsoe, B. E., Cherry, R. A. & Porter, R. S (2023) Paramedic Care: Principles and Practice (6th Ed) Boston, Massachusetts: Pearson

Frascone, R. J. (2014) The Risk Versus Benefit of LUCAS: Is It Worth It? Anesthesiology 120: 797–798

Peate, I. & Sawyer, S (2024) Fundamentals of Applied Pathophysiology for Paramedics. Hoboken, New Jersey:  Wiley Blackwell

Vitali (2022) The Lucas Device Explained  https://www.vitalipartners.com/blog/2022/08/the-lucas-device-explained-chest-compression-system/ Accessed May 12, 2024