The Science Behind CPR: Understanding the Basics with MyCPR NOW

By: RandyYoumans

In the realm of life-saving techniques, Cardio-Pulmonary Resuscitation (CPR) stands as a beacon of hope during critical moments. When seconds count, knowing how to perform CPR can be the difference between life and death. Welcome to MyCPR NOW, your comprehensive guide to understanding the science behind CPR. We are committed to providing you with the knowledge and skills necessary to empower you in life-threatening situations.

CPR Demystified

What is CPR?

Cardio-Pulmonary Resuscitation, or CPR, is a crucial emergency procedure administered to individuals experiencing cardiac arrest or respiratory failure. Its primary goal is to maintain oxygenated blood flow to the vital organs, especially the brain, until professional medical help arrives.

Why is CPR Important?

CPR is essential because it can keep a person alive until emergency medical services (EMS) arrive. When the heart stops beating or when someone stops breathing, every second counts. CPR increases the chances of survival by providing oxygen to the brain and other vital organs, preventing irreversible damage.

The MyCPR NOW Approach

At MyCPR NOW, we understand the significance of learning CPR. We provide comprehensive training that covers every aspect of this life-saving technique. Our approach combines science, practical skills, and real-world scenarios to ensure you are well-prepared to act swiftly and effectively in emergencies.

The Physiology of CPR

How CPR Works

Performing CPR involves a combination of chest compressions and rescue breaths. The compressions help circulate blood throughout the body, while the rescue breaths supply oxygen to the lungs. This dynamic duo sustains life until professional help arrives.

Chest Compressions

During CPR, chest compressions are the cornerstone of the technique. They are performed by pushing hard and fast on the center of the chest, just above the sternum (breastbone). This action helps mimic the heart’s pumping action and keeps oxygenated blood flowing.

Rescue Breaths

Rescue breaths involve giving the victim two breaths after every 30 compressions. This process ensures that the victim receives a fresh supply of oxygen. It’s important to maintain a proper ratio of compressions to breaths for the best outcomes.

When and How to Perform CPR

Recognizing Cardiac Arrest

The first step in performing CPR is recognizing when it’s necessary. Look for signs like unresponsiveness, no breathing, or gasping for breath. If any of these symptoms are present, it’s time to act.

The CPR Process

  1. Check the Scene: Ensure the area is safe for both you and the victim.
  2. Call for Help: Dial emergency services or ask someone nearby to call.
  3. Start CPR: Begin with chest compressions, pushing hard and fast.
  4. Provide Rescue Breaths: After 30 compressions, give two rescue breaths.
  5. Continue: Keep repeating the cycle until help arrives or the victim starts breathing again.

CPR for Different Age Groups

Adult CPR

Adult CPR follows the standard procedure of 30 compressions followed by two rescue breaths. The depth of chest compressions and the force applied may differ from adult to adult.

Child CPR

For children, the technique remains the same but with adjustments to the depth and force of compressions and the size of the rescue breaths. Child CPR is tailored to the child’s specific needs.

Infant CPR

Infant CPR requires even more delicate handling, with the use of two fingers for chest compressions and gentler rescue breaths. It is crucial to adapt the technique to the size and age of the infant.

The Importance of CPR Training

Hands-On Practice

While understanding the theory of CPR is valuable, hands-on practice is equally essential. At MyCPR NOW, we offer training sessions that allow you to practice CPR techniques on manikins, giving you the confidence and muscle memory needed for real-life situations.

AED (Automated External Defibrillator)

Understanding how to use an Automated External Defibrillator is also a vital component of CPR training. AEDs can analyze heart rhythms and deliver an electric shock if necessary, potentially restoring a normal heart rhythm.


In conclusion, CPR is a life-saving skill that everyone should learn. MyCPR NOW is dedicated to providing you with the knowledge and training required to make a difference in emergencies. Remember, quick and effective CPR can significantly increase the chances of survival for someone in cardiac arrest or facing respiratory failure.

Don’t wait until it’s too late. Enroll in a CPR training course with MyCPR NOW and equip yourself with the skills that can save lives. Together, we can make a difference.