How often should a patients patient's pacemaker/ICD be interrogated while they are undergoing a course of radiotherapy?

There is no simple answer to this question. The frequency of the interrogation should made in concert with a experienced cardiologist/electrophysiologist. Factors that play into the frequency of interrogation include an estimation of the consequences of device failure and the likelihood of device failure based on an estimation of the dose the device will receive. All reasonable attempts to limit dose to the device should me made. At our institution, all patients with ICD/paceakers devices are re...