As an expert in emergency medical services, I am well-versed in the latest protocols and procedures for life-saving interventions, including CPR. Cardiopulmonary Resuscitation (CPR) is a critical skill that can make the difference between life and death in emergency situations where a person's breathing or heartbeat has stopped. The cab of CPR is a mnemonic that helps rescuers remember the sequence of actions to perform during CPR. It's important to note that the sequence has evolved over time to reflect the most effective methods for providing aid.
The cab of CPR traditionally stood for Circulation, Airway, Breathing. However, as you mentioned, the American Heart Association (AHA) made a significant change in their 2010 Guidelines for CPR and Emergency Cardiovascular Care (ECC). This change was based on evidence that emphasized the importance of chest compressions in maintaining blood flow to the brain and other vital organs.

### The Change from A-B-C to C-A-B

The Chest Compressions (C) are now prioritized as the first step in CPR for adults, children, and infants (excluding newborns). This is because uninterrupted chest compressions can help sustain vital blood circulation to the heart and brain, which are critical for survival. The compressions should be performed at a rate of at least 100 to 120 per minute and should be about 2 inches deep for adults.

Airway (A) is the second step. After starting chest compressions, the rescuer should open the victim's airway to ensure that it is clear of any obstructions. This is done by tilting the head back and lifting the chin to create a clear path for air to flow into the lungs.

Breathing (B) is the third step. Once the airway is clear, the rescuer should give rescue breaths. This is done by pinching the victim's nose shut, taking a deep breath, and then giving two breaths, each lasting about one second.

### Why the Change Was Made

The change from A-B-C to C-A-B was made after extensive research showed that initiating CPR with chest compressions can double or even triple a victim's chance of survival. The delay in starting chest compressions can lead to a significant decrease in the chance of survival due to the vital organs not receiving the necessary oxygenated blood.

### How to Perform CPR


1. Assess the Scene: Ensure the scene is safe for both you and the victim.

2. Call for Help: Dial emergency services immediately.

3. Check for Responsiveness: Tap the victim's shoulder and ask loudly if they are okay.

4. Start Chest Compressions (C): Place the heel of one hand in the center of the victim's chest and the other hand on top. Push hard and fast.

5. Open the Airway (A): After 30 compressions, open the airway.

6. Give Rescue Breaths (B): Pinch the victim's nose and give two rescue breaths.

### Importance of CPR Training

It's crucial for individuals to receive CPR training. The skills learned can be life-saving, and the more people who are trained, the more lives can be saved. CPR training also covers the use of Automated External Defibrillators (AEDs), which can be used to restart a victim's heart if it's in a shockable rhythm.

### Conclusion

The cab of CPR has evolved to reflect the most current and effective methods for providing aid in life-threatening situations. The shift from A-B-C to C-A-B underscores the importance of chest compressions in CPR and has been shown to improve survival rates. It's a testament to the ongoing research and commitment to saving lives through evidence-based practices.

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Recommending that chest compressions be the first step for lay and professional rescuers to revive victims of sudden cardiac arrest, the association said the A-B-Cs (Airway-Breathing-Compressions) of CPR should now be changed to C-A-B (Compressions-Airway-Breathing).Oct 18, 2010read more >>