How many chest compressions are performed in CPR before rescue breaths?

Prepare for the Canadian Red Cross Standard First Aid Test. With flashcards and multiple choice questions, each with hints and explanations. Get ready for your exam!

In adult CPR, the recommended guideline is to perform 30 chest compressions followed by 2 rescue breaths. This ratio is essential for maintaining blood circulation and oxygenating the individual in need of help.

The reason for selecting 30 compressions is grounded in the need for effective and efficient intervention. Performing 30 compressions ensures that the heart is being stimulated adequately to circulate blood to vital organs, primarily the brain and heart itself, while the subsequent rescue breaths provide the necessary oxygen.

This ratio is also designed for ease of performance in a stressful situation, allowing responders to remember and execute the steps effectively. Using a consistent method helps ensure that the rescuer can maintain a rhythm that maximizes the chances of survival until professional help arrives. Other options either do not conform to the established guidelines or would not provide an optimal balance between circulation and oxygenation.

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