What restriction exists regarding initiating magnet mode in a cardiac device?

Initiating magnet mode in a cardiac device, such as an implantable cardioverter-defibrillator (ICD) or a pacemaker, is subject to specific operational protocols. One key restriction is that it cannot be done while the device is engaged in a telemetry session. When a telemetry session is active, the device is communicating data to an external programmer or monitoring device. This communication is essential for assessing device performance, battery status, and delivering therapy as needed. Interrupting this session by activating magnet mode could lead to loss of data or hinder the assessment of the device’s functionality, which is critical in a clinical setting.

Thus, ensuring that magnet mode is initiated only when the device is not actively engaged in telemetry helps maintain the integrity of device programming and patient monitoring, ensuring optimal patient care.