Category: CPR Blog

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Anatomy of the heart

The heart is a muscular, cone-shaped organ located behind the sternum and is approximately the same size as the patient’s closed fist. The heart walls are made up the three structures: the pericardium, myocardium...

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What is ventricular fibrillation (VF)?

Ventricular fibrillation (VF) is the most common cause of cardiac arrest. It is a rapid, chaotic, lethal rhythm of the heart. In this condition the heart is unable to contract and therefore unable to...

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Free online defibrillation course

Our friends over at firstaidforfree.com have just launched a free online Automated External Defibrillator (AED) course. This new course covers basic principles of defibrillation and its role in the management of sudden cardiac arrest....

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How to perform rescue breaths

In this CPR blog post we discuss how to perform rescue breathing / artificial ventilations on a casualty. On normal inspiration, a person breathes in approximately 21% oxygen. The body uses between 4 –...

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Free CPR revision notes

Here’s a set of notes written about Cardio-Pulmonary Resuscitation (CPR). Feel free to test your knowledge of CPR after reading these notes by using one of our free CPR practice tests. Cardiopulmonary resuscitation (CPR)...

CPR exam practice questions (free) 0

CPR exam practice questions (free)

Studying for an upcoming CPR exam? Need some practice questions to test your knowledge? Here at CPR-test.org we’ve compiled a bank of free questions and answers to help you improve your knowledge of CPR....

Breaking ribs during CPR: should you be worried? 0

Breaking ribs during CPR: should you be worried?

Cardio-pulmonary resuscitation (CPR) involves delivering chest compressions to a patient who is in cardiac arrest (their heart has stopped beating). Chest compressions work to keep the brain and body supplied with oxygen by squeezing the heart and forcing...

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Can you use a defibrillator on a wet surface?

A defibrillator, or AED (automated external defibrillator), is a life-saving device which delivers an electrical shock to the heart during a cardiac arrest. There are many myths about using a defibrillator. Many people believe...

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Can you use a defibrillator on a metal surface?

A defibrillator, or AED (automated external defibrillator), is a life-saving device which delivers an electrical shock to the heart during a cardiac arrest. There are many myths about using a defibrillator. Many people believe...

How long should you spend checking for breathing? 0

How long should you spend checking for breathing?

Before starting cardio-pulmonary resuscitation (CPR) it is important to assess whether the patient is breathing normally. In order to do this, you should open the airway and check for breathing using the ‘look, listen, feel’...