To restore the heart's rhythmic beat, what should be used?

To restore the heart's rhythmic beat, using an Automated External Defibrillator (AED) is appropriate. AEDs are portable devices designed to diagnose life-threatening cardiac arrhythmias, such as ventricular fibrillation and pulseless ventricular tachycardia. They deliver an electric shock to the heart, which can help re-establish a normal rhythm.

AEDs are user-friendly devices that provide voice prompts and visual instructions, making them accessible for use by laypersons during emergencies. They are a critical component of emergency response in situations of sudden cardiac arrest, as they can significantly increase survival rates when used promptly.

In contrast, while a manual defibrillator is also effective in restoring heart rhythm, it typically requires trained personnel for operation and isn’t as accessible for public use as an AED. CPR techniques are essential for maintaining blood circulation until advanced medical help arrives but do not directly restore heart rhythm. Medications may be used in a clinical setting to manage certain arrhythmias, but they aren't immediate solutions for restoring rhythm in an emergency outside a hospital.