A nurse is reinforcing discharge teaching with a client who has a new permanent pacemaker. Which of the following statements by the client indicates an understanding of the teaching?

The scenario requires evaluating a post-pacemaker discharge teaching plan. Knowledge of electromagnetic interference, safety protocols, and device functionality must be applied to identify statements that demonstrate correct understanding of lifestyle modifications and safety precautions for a permanent pacemaker. Choice A rationale Modern pacemakers are shielded against airport security interference. Standard metal detectors do not damage the device, though the metal casing may trigger alerts, requiring the client to carry a device identification card for alternative screening protocols. Choice B rationale Household microwave ovens are safe to use because modern engineering provides adequate electrical shielding. They do not emit electromagnetic radiation that disrupts pacemakers, allowing the client to operate them safely without restriction. Choice C rationale Magnetic resonance imaging utilizes powerful magnetic fields that can deactivate, reprogram, or dislodge pacemaker components. Unless specifically labeled as conditionally safe, magnetic resonance imaging is strictly contraindicated, whereas computed tomography scans are safe. Choice D rationale Holding cellular phones to the ear opposite the pacemaker site maintains a safe distance of at least 15 centimeters. This prevents potential temporary electromagnetic interference with the device telemetry and pacing cycles from cellular signals.