Cardiopulmonary resuscitation (CPR) helps ensure oxygenation of the organs when a person has stopped breathing, is in circulatory arrest (blood is no longer circulating) and is unconscious.
The risks of circulatory arrest
Without the circulation of blood, the organs are no longer supplied with oxygen and begin to die: brain damage appears from the third minute. The chance of survival decreases by 10% per minute without resuscitation. Performing CPR helps to better support oxygenation while waiting for help in order to limit potential damage and slow down the process.
When to perform CPR?
First reflex: protect the person from the dangers around, ask for help and call for help.
The person should be unconscious and stop breathing. To verify that the person is unconscious: ask questions, give simple commands (shake hands) and lightly pat the cheek. If the person does not respond, gently lift their chin with two fingers, supporting the forehead with the other hand, open the person's mouth, feel whether the air is passing or not. If the air does not pass or badly, you will have to start CPR.
Don't necessarily try to find a pulse if you don't know how. But make sure the person doesn't breathe, if there is a weak pulse or breath, do not start the massage.
How to perform a CPR (1min40 of the video)?
The right tempo would match the Beegees' song Staying Alive (103 beats per minute).
The case of mouth to mouth
Mouth to mouth is a separate technique that occurs mainly during cardiac arrest. Do not give mouth to mouth unless you know how to do it. Otherwise, continue the pulsations.
To make a mouth to mouth (3min23 of the video):
The rhythm of a CPR with mouth to mouth is:
Doing this is very tiring for you, do not hesitate to ask for help from others present until the victim regains normal breathing or help arrives.
Automated External Defibrillators (AEDs) exist around your home. In particular, you can locate them with an application like Staying Alive. You should use these defibrillators in case the heart is stopped. Do not hesitate! Instructions are normally fairly straightforward to follow on this type of machine and will tell you if this is not necessary anyway.
Finally, don't be afraid to do wrong, trying to apply these movements as best as possible is better than doing nothing at all!