For monophasic defibrillators, what is the standard energy dose?

• A. Set the energy dose at 360 J. Use this energy dose for each subsequent shock.
• B. Use 120-200 J for all shocks
• C. Use 200 J for first shock and 360 J thereafter
• D. Use energy dose vary by shock

Answer: (A)

Monophasic defibrillators deliver a fixed amount of energy per shock. The standard dose is 360 J for every shock, so you set the device to 360 J and use that same dose for subsequent shocks if needed. This fixed high-energy approach contrasts with biphasic devices, which use different escalating or varying energy schemes (for example, starting lower, like 120–200 J, and sometimes increasing on later shocks). Therefore, the best answer reflects that monophasic devices use a single, consistent energy level of 360 J for all shocks.