Basic Life Support (BLS) Practice Exam

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What is the crucial step in the Chain of Survival after calling for emergency help?

Initiating CPR
Using the AED
Monitoring the victim's condition
Giving rescue breaths only

The correct answer is: Initiating CPR

Initiating CPR is the crucial step in the Chain of Survival following the call for emergency help because it helps to restore oxygenated blood flow to the brain and other vital organs during cardiac arrest. Immediate CPR is essential for increasing the chances of survival until professional medical personnel arrive. When effective chest compressions are delivered, they can maintain some blood circulation, buying critical time for the victim. This intervention is key, as the heart may not be pumping adequately, and the brain starts to suffer irreversible damage within minutes without oxygen. By performing CPR promptly, bystanders can significantly improve the victim's outcomes. Following the initiation of CPR, using an AED becomes important, as it can restore a normal rhythm to the heart in certain cases. However, delivering chest compressions is the immediate priority to ensure blood flow is maintained. Monitoring the victim's condition and providing rescue breaths are also part of the CPR process, but the initial action that is deemed crucial in the Chain of Survival is the initiation of CPR.