Inappropriate detection and therapy from an implantable cardioverter defibrillator due to atrial undersensing.
We present a case of inappropriate detection and therapy in a patient with an implantable cardioverter defibrillator. The device interpreted a supraventricular tachycardia as ventricular tachycardia due to unsensed P waves as a result of a relatively high level of atrial sensitivity setting. Subsequently, inappropriate therapy was delivered. The problem was resolved by decreasing the atrial sensitivity value.
Paraskevaidis
Stelios
S
1st Cardiology Department, Aristotle University of Thessaloniki, AHEPA Hospital, 33 G.Gennimata Str., Agios Ioannis-Kalamaria, Thessaloniki 55134, Greece. stparask@otenet.gr
Polymeropoulos
Kostas
K
Vassilikos
Vassilis
V
Louridas
George
G
D017147:Defibrillators, Implantable; D004868:Equipment Failure; D006801:Humans; D008297:Male; D008875:Middle Aged; D013617:Tachycardia, Supraventricular / Q000175:diagnosis* / Q000628:therapy*; D017180:Tachycardia, Ventricular / Q000175:diagnosis* / Q000628:therapy*