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When is CPR Necessary?


Cardiopulmonary Resuscitation (CPR) is a life-saving technique that can make the difference between life and death in critical situations. Knowing when CPR is necessary and how to administer it correctly can save lives. 

Here, we will explore the scenarios in which CPR is required, the importance of acting promptly, and the correct steps to follow.

Understanding the Importance of CPR

CPR is a vital skill that can be the difference-maker during medical emergencies. It involves a combination of chest compressions and rescue breaths to maintain blood circulation and provide oxygen to the brain and vital organs when the person’s own circulation has stopped.

Breathing and Pulse: The Critical Factors

Before deciding to perform CPR, you need to assess two critical factors: breathing and pulse. If a person isn’t breathing or doesn’t have a pulse, it’s time to initiate CPR immediately. These two factors are the primary indicators that CPR is necessary.

Calling 999

While performing CPR is crucial, it’s equally important to call 999 immediately. Timely professional medical help is essential for the best chance of survival.

Scenarios Requiring CPR

Knowing how to perform CPR is half of the equation, the other half is knowing when to perform CPR. Here are some of the common situations where CPR might be necessary.

Cardiac Arrest

The most common scenario necessitating CPR is a sudden cardiac arrest. In this situation, the heart stops beating or beats irregularly, leading to a lack of oxygen circulation throughout the body.


When an individual is choking and becomes unconscious, CPR might be necessary to clear the airway and restart breathing.


Electric shock can disrupt the heart’s electrical activity. CPR is needed to restore circulation.


Victims of near-drowning often require CPR to reestablish breathing and circulation.

Drug Overdose

Certain drug overdoses can lead to respiratory failure. CPR can help maintain oxygen flow until medical assistance arrives.

The CPR Procedure

  • Assess the situation: Ensure the environment is safe for you and the victim.
  • Call for help: Dial 999 or ask someone else to do so.
  • Begin chest compressions: Place your hands on the centre of the chest and perform chest compressions at a rate of 100-120 compressions per minute.
  • Give rescue breaths: If trained, give rescue breaths following the recommended ratio.
  • Continue CPR until help arrives: Keep performing CPR until professional medical help arrives or the person starts breathing on their own.

CPR Training and Certification

It’s highly recommended to receive CPR training and certification. Proper training ensures that you are prepared to perform CPR correctly and confidently when needed. Our Basic Life Support course covers CPR and defibrillator training so that you will be well prepared to deal with life threatening emergencies such as cardiac arrests.


Knowing when CPR is necessary and being prepared to act swiftly can be the difference between life and death in emergency situations. Be proactive in learning CPR, and remember that immediate action can save lives.