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Quiz: ICD

Figure 1. Stored electrogram

 

Figure 2. Stored electrograms

Consider these cases. What happened and what reasons led to this?

A. Inappropriate ICD discharges: noise on the RV electrode - Fig.1, Rapid atrial fibrillation - Fig.2

B. Inappropriate ICD discharges: T wave oversensing - Fig.1, Rapid atrial flutter - Fig.2

C. Appropriate ICD discharges: Ventricular fibrillation - Fig.1, Rapid ventricular tachycardia - Fig.2

D. Inappropriate ICD discharges: T wave oversensing - Fig.1, Pacemaker-mediated tachycardia - Fig.2

Ayan Abdrakhmanov, Zhandos Esilbayev

Department of Interventional Arrhythmology

National Research Cardiac Surgery Center

Nur-Sultan, Kazakhstan

Peer-review: Internal

Conflict of interest: None to declare

Authorship: A.A. and Z.E. equally contrıbuted to preparation of quiz

         Acknowledgement and funding: None to declare