What is the primary purpose of using a defibrillator in cases of cardiac arrest?

What is the primary purpose of using a defibrillator in cases of cardiac arrest?

• A. To relieve chest pain
• B. To restore a normal heart rhythm
• C. To treat hypertension
• D. To increase circulation

Answer: (B)

The primary purpose of using a defibrillator in cases of cardiac arrest is to restore a normal heart rhythm. Cardiac arrest often occurs due to arrhythmias, specifically ventricular fibrillation or pulseless ventricular tachycardia, where the heart's electrical activity becomes chaotic and ineffective, preventing it from pumping blood effectively. A defibrillator delivers an electric shock to the heart to reset its electrical activity, allowing the heart to potentially regain its normal rhythm and function. This immediate intervention is crucial, as restoring a normal heart rhythm can significantly increase the chances of survival in a patient experiencing cardiac arrest. The other options, although important in their own contexts, do not directly relate to the primary function of a defibrillator. For example, relieving chest pain might be a goal in other medical emergencies but is not the purpose of defibrillation. Treating hypertension involves different medications and interventions focused on blood pressure management, while increasing circulation generally refers to ensuring blood flow through other means, not specifically through defibrillation.

The primary purpose of using a defibrillator in cases of cardiac arrest is to restore a normal heart rhythm. Cardiac arrest often occurs due to arrhythmias, specifically ventricular fibrillation or pulseless ventricular tachycardia, where the heart's electrical activity becomes chaotic and ineffective, preventing it from pumping blood effectively. A defibrillator delivers an electric shock to the heart to reset its electrical activity, allowing the heart to potentially regain its normal rhythm and function. This immediate intervention is crucial, as restoring a normal heart rhythm can significantly increase the chances of survival in a patient experiencing cardiac arrest.

The other options, although important in their own contexts, do not directly relate to the primary function of a defibrillator. For example, relieving chest pain might be a goal in other medical emergencies but is not the purpose of defibrillation. Treating hypertension involves different medications and interventions focused on blood pressure management, while increasing circulation generally refers to ensuring blood flow through other means, not specifically through defibrillation.