Tachycardia Initiated by One to Two Response and Terminated by ICD Shocks
نویسندگان
چکیده
A 58 year-old male was referred to our institute for recurrent palpitations followed by ICD shocks. The patient had a history of ischemic cardiomyopathy (EF 25%) and had received a dual-chamber ICD two years earlier for primary prevention of sudden cardiac death. The device interrogation showed multiple episodes of tachycardia and anti-tachycardia pacing (ATP), which frequently terminated the tachycardia. However, occasional failure to terminate the tachycardia or immediate re-initiation within the redetection window led to ICD shocks. A typical episode of tachycardia with its initiation is shown in Figure 1.
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