What is Adult CPR/AED and how do we use it.

Published on November 16, 2025 at 3:42 PM

What is Adult CPR/AED?

 

Cardiac emergencies can strike without warning and knowing how to respond can mean the difference between life and death. Adult CPR/AED refers to the combined use of cardiopulmonary resuscitation (CPR) and an automated external defibrillator (AED) to help adults experiencing sudden cardiac arrest.

 

CPR helps maintain blood circulation to vital organs when the heart stops beating, while an AED delivers an electrical shock that can restore a normal rhythm. Together, these actions dramatically improve the chance of survival until professional medical help arrives.

 

Understanding the Science Behind CPR

When the heart suddenly stops pumping blood, the body is deprived of oxygen. Within minutes, brain cells begin to die. CPR manually keeps oxygenated blood flowing through the body by pressing on the chest to mimic the heart’s pumping action.

This simple yet powerful intervention keeps the heart and brain alive long enough for an AED or emergency responders to take over.

 

Role of AED in Cardiac Arrest Response

An AED (Automated External Defibrillator) is a portable device that analyzes the heart’s rhythm and determines whether a shock is needed. If a shockable rhythm—such as ventricular fibrillation—is detected, the AED guides you with clear voice prompts.

AEDs are designed for public use, making them an invaluable tool in airports, offices, schools, and gyms. When used within the first few minutes of collapse, an AED can double or even triple a person’s chance of survival.

 

When and Why to Perform CPR on an Adult

Knowing when to start CPR is critical. Adult CPR should be initiated immediately when someone:

  • Collapses suddenly
  • Is unresponsive or unconscious
  • Shows no signs of breathing or only gasping

Delaying CPR reduces the victim’s survival rate by about 10% per minute without intervention. The faster you act, the better the outcome.

 

Key Warning Signs of Sudden Cardiac Arrest

  • No pulse or heartbeat
  • Unconsciousness
  • Absence of normal breathing
  • Sudden collapse without warning

Recognizing these symptoms early allows for immediate action—calling 911, starting CPR, and using an AED.

 

Step-by-Step Adult CPR Procedure

Performing CPR correctly can be the deciding factor between life and death. Here’s a simplified version of the American Red Cross(ARC) adult CPR steps:

Check Responsiveness and Breathing: Gently tap the person’s shoulder and ask if they’re okay.

Call for Emergency Help: Dial 911 or have someone else call while you begin CPR.

Start Chest Compressions:

  • Place the heel of one hand on the center of the chest.
  • Put your other hand on top and interlock fingers.
  • Press down at least 2 inches deep, at a rate of 100–120 compressions per minute (to the beat of “Stayin’ Alive”).

Give Rescue Breaths: After 30 compressions, give 2 breaths by tilting the head back, pinching the nose, and blowing into the mouth until you see the chest rise.

Continue CPR: Keep alternating 30 compressions and 2 breaths until help or an AED arrives.

 

Using an AED on an Adult: Step-by-Step Guide

AEDs are incredibly user-friendly. Follow these steps:

  1. Turn on the AED and follow voice instructions.
  2. Attach the Pads to the victim’s bare chest (one pad on the upper right chest, the other below the left armpit).
  3. Ensure No One is Touching the Person while the AED analyzes the rhythm.
  4. Deliver the Shock when instructed, then immediately resume CPR.

Continue until the person shows signs of life or medical professionals take over.

 

Common Mistakes to Avoid During CPR/AED Use

  • Not pushing hard or fast enough
  • Forgetting to let the chest fully recoil
  • Delaying CPR while looking for an AED
  • Touching the person during AED shock delivery
  • Failing to call emergency services early

Avoiding these mistakes can significantly increase survival chances.

 

Benefits of Learning Adult CPR/AED

Training in Adult CPR/AED empowers individuals to act confidently in emergencies. Whether at home, work, or in public, knowing how to respond can save family members, coworkers, or even strangers.

Organizations that train employees in CPR/AED create safer environments and demonstrate responsibility toward community welfare.

 

Certification and Training Opportunities

You can obtain certification through reputable organizations such as:

American Red Cross (www.redcross.org)

American Heart Association (AHA)

Respondtrue(www.respondtrue.com)

Bystanders that got involved and there when EMS arrived.