JBL EMT Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

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What is the main purpose of chest compressions during CPR?

Create effective breaths

Chest compressions are a fundamental part of CPR and their main purpose is to generate blood flow. When someone experiences cardiac arrest, their heart stops beating effectively and is unable to pump blood to the rest of the body. Chest compressions work by manually compressing the chest to mimic the pumping action of the heart and help circulate blood. This is crucial for keeping vital organs, such as the brain, supplied with oxygen-rich blood. While effective breaths are also important during CPR, their role is to provide oxygen to the lungs, not to create blood flow. Intubation preparation and repositioning the heart are not the main purposes of chest compressions in CPR.

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Generate blood flow

Intubation preparation

Reposition the heart

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