Cardiocases casebook

Medtronic ICD — clinical cases

P. Bordachar, A. Thiyagarajah, L. Fontagne, M. Strik, S. Ploux. Every numbered marker on an electrogram is one tap from its explanation, on a phone or a desktop.

1Counters

1Analysis of a VF trace recorded by the device2A ventricular arrhythmia in the VF zone3Utility of a probabilistic counter in the VF zone4Spontaneous termination of a ventricular arrhythmia5Increasing counters and preventing avoidable therapies6Initial counter and redetection counter7No confirmation for a second shock8Specifics of the VT counter9AF and the VT counter10Zone limits and the VT counter11Specific features of the fast VT counter12Combined counter13Fast VT and the combined counter14VT and the monitor zone

2Therapies

1A shock to restore a viable rhythm2Defibrillation threshold and upper limit of vulnerability3Anti-tachycardia pacing in the VF zone4Anti-tachycardia pacing in the VF zone and conserving energy5Double anti-tachycardia pacing sequence6Anti-tachycardia pacing in the VT zone7Bursts or ramps ?8Acceleration after several sequences of anti-tachycardia pacing9Accceleration after anti-tachycardia pacing10Pro-arrhythmogenic effect of a low output shock11Programming a first shock at maximum output in the VT zone

3Oversensing

1A special kind of plot2Oversensing and risk of sudden death3Which programming option should be used if the T wave is oversensed?4The unexpected behaviour of an algorithm5Use of a specific algorithm6Oversensing and integrated bipolar mode7Electric shock during a barbecue8An unexpected cause of syncope9Shock during surgery10Ventricular cycles too short to be physiological11Telemedicine monitoring to avoid disasters12The benefits of induction at the end of implantation13Use of an algorithm to avoid inappropriate therapies14A characteristic feature on the EGM

4Discrimination

1Discriminators available on a single-chamber defibrillator2Sudden onset criterion and sinus tachycardia3Choice of discriminators in a single-chamber defibrillator4Single-chamber defibrillator and new recommendations5Single-chamber defibrillator and SVT V. Limit6Limitations of discrimination based on Wavelet7Discrimination and atrioventricular conduction disorders8Discrimination and conduction disorders9Using single-chamber discriminators in a dual-chamber defibrillator10Triple-chamber defibrillator and V limit. SVT11Dual-chamber defibrillator and atrioventricular dissociation12PR Logic versus Wavelet13Dual-chamber discrimination and atrial detection14Double-chamber discrimination and exertion in a young patient151/1 tachycardia, PR Logic, Wavelet16PR Logic and conducted AF17Conducted AF, PR Logic and Wavelet18AF with regular ventricular response, PR Logic and Wavelet19PR Logic and atrial flutter20Double-chamber discrimination and bi-tachycardia

From Medtronic ICD — clinical cases by P. Bordachar, A. Thiyagarajah, L. Fontagne, M. Strik, S. Ploux. Published by Cardiocases. Every numbered marker on a recording is explained in the list beneath it; tap a marker on the trace or an entry in the list.

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