In a patient with a permanent pacemaker, where should you place the defibrillator paddle or electrodes?

In a patient with a permanent pacemaker, where should you place the defibrillator paddle or electrodes?

• A. Directly over the pulse generator
• B. On the left chest near the pacemaker
• C. On the opposite side of the chest
• D. At least one inch from the pulse generator

Answer: (D)

Strongest rule here is to protect an implanted pacemaker from external defibrillation energy. External shocks travel through the chest, and energy that travels through or near the pulse generator can damage the device, heat the leads, or cause inappropriate sensing or pacing inhibition. Placing the defibrillator paddles or patches with a safe clearance from the generator minimizes current passing directly through the device while still delivering an effective shock across the heart. That’s why the best choice is to position the pads at least one inch away from the pulse generator. This keeps the shock vector away from the generator itself and reduces the risk of device interference, without compromising the ability to treat a life-threatening rhythm. Avoiding direct placement over the device is preferred, and while you can adjust pad placements to optimize the current path (often left chest and back), maintaining a distance from the generator is the key principle.

Strongest rule here is to protect an implanted pacemaker from external defibrillation energy. External shocks travel through the chest, and energy that travels through or near the pulse generator can damage the device, heat the leads, or cause inappropriate sensing or pacing inhibition. Placing the defibrillator paddles or patches with a safe clearance from the generator minimizes current passing directly through the device while still delivering an effective shock across the heart.

That’s why the best choice is to position the pads at least one inch away from the pulse generator. This keeps the shock vector away from the generator itself and reduces the risk of device interference, without compromising the ability to treat a life-threatening rhythm.

Avoiding direct placement over the device is preferred, and while you can adjust pad placements to optimize the current path (often left chest and back), maintaining a distance from the generator is the key principle.