Final answer:
Defibrillators deliver two types of electrical shocks: 2)low-energy for cardioversion and high-energy for defibrillation. The correct answer to the question is low voltage shock and high voltage shock.
Step-by-step explanation:
Modern defibrillator/cardioverters are capable of delivering two primary types of electrical shocks: low-energy and high-energy. These shocks differ in the amount of energy delivered and their specific use cases in treating cardiac arrhythmias. The correct answer to the student's question is option 2) Low voltage shock and high voltage shock.
Low-energy shocks are typically used for cardioversion, a procedure to return the heart to a normal rhythm when it is beating too fast or irregularly but not in ventricular fibrillation or pulseless ventricular tachycardia. High-energy shocks, on the other hand, are used in more critical situations such as ventricular fibrillation or pulseless ventricular tachycardia, where the heart is in a state that is immediately life-threatening and the aim is defibrillation—to stop the chaotic rhythm and allow the heart's natural pacemaker to take over. AEDs, which are designed for use by laypersons, can automatically determine which type of shock is appropriate and administer it accordingly.