Médiathèque du cas clinique -Rythmologie-

Pace-maker tachycardia or supraventricular tachycardia ?


50 years old male without cardiovascular risk factors 
Pace maker in March 2015 for a paroxysmal complete atrioventricular block (AVB) with syncope (PM DDD SJM ENDURITY DR)
Presented to emergency for ferquent palpitations and dyspnea   
ECG : alternance between tachycardia 150 bpm and normal rythm 
Image : Pacemaker telemetry 



The palpitations are due to ?