A nurse is providing discharge teaching to a client who has an implantable cardioverter/defibrillator (ICD). Which of the following information should the nurse include?

Implantable cardioverter-defibrillators regulate malignant dysrhythmias via sensing and shock delivery. Key considerations include electromagnetic interference, device integrity, lead function, and shock therapy, with risks of inappropriate shocks, inhibition, or malfunction from external electrical sources or magnetic fields. Rationale: A. Small household electric devices such as microwaves or radios generate minimal electromagnetic interference and are generally safe with modern ICDs. Avoidance is unnecessary, as shielding technology prevents disruption of device sensing and pacing under normal use conditions. B. Holding a cell phone on the side opposite the ICD reduces electromagnetic interference risk by increasing distance from the generator. Radiofrequency signals may transiently affect sensing, so maintaining ≥15 cm separation minimizes inappropriate inhibition or triggering of therapy. C. An ICD is surgically implanted subcutaneously, typically in the upper chest, and cannot be externally carried. Suggesting placement in a pocket reflects misunderstanding of device implantation and cardiac pacing systems, which require sterile surgical insertion and internal lead attachment. D. Air travel is permitted for clients with ICDs. Airport security systems may detect the device but do not prohibit travel. Clients should inform personnel to avoid prolonged exposure to metal detectors and request alternative screening if concerned about electromagnetic interference.