Cardiocases casebook

MicroPort ICD — clinical cases

M. Strik, A. Thiyagarajah, S. Ploux, P. Bordachar, P. Ritter. 38 cases built on MicroPort™ device interrogations: read the screens, answer the question, then check your answer against the authors’ step-by-step interpretation.

1Counters

1Counting and diagnosis of ventricular fibrillation 2Counting in the VT zone 3Competing counters 4Persistence 5Long VT

2Therapies

1Tachycardia treated with a shock 2Tachycardia treated with a shock, or is it?3Tachycardia treated by an ATP burst 4Fast tachycardia accelerated by therapy 5Tachycardia treated by an ATP burst 6Possible deleterious effect of antitachycardia pacing 7Levels of aggressiveness 8Tachycardia and zones 9Termination by ATP?

3Discrimination

1Stability as the great discriminator 2What about morphology?3Preferred PARAD+ pathway 41:1 tachycardia 5A well classified 1:1 tachycardia 6Appropriate discrimination? Analyse everything!7Bitachycardia ?8Stabilisation of a tachycardia against a backdrop of atrial arrhythmia; a very difficult diagnosis

4Oversensing

1T-wave oversensing 2Aborted charge 3Lead dysfunction 4Oversensing of the P waves 5Extracardiac oversensing 6Oversensing of signals generated by the 50 Hz line current 7Oversensing from the use of a electrocautery knife 8An emergency!

5Remote monitoring

1Shocks disabled 2ATP delivered 3Shocks delivered 4Shock delivered 5Atrial lead impedance 6Ventricular oversensing suspected 7R.R.T.8Lead Parameters Evaluation (LPE) RV alert

From Implantable Cardioverter Defibrillator — Clinical cases from patients with MicroPort™ ICDs by M. Strik, A. Thiyagarajah, S. Ploux, P. Bordachar, P. Ritter. Published by Cardiocases. Each case is a question on real device interrogations: pick your answer, check it, then read the authors’ interpretation. Tap any figure to open it full screen.

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