Unexpected implantation of cardiac resynchronization therapy: Its characteristics and prognosis

The majority of previous discussions regarding cardiac resynchronization therapy (CRT) have focused on parameters in elective situations, with limited information on implantation timing and its clinical impacts.1 This study investigated real-world data on the timing of CRT implantation—whether unexpected or elective—and its associated clinical characteristics, by comparing the safety and efficacy of unexpected versus elective implantations.