ICD discrimination of SVT versus VT with 1:1 V-A conduction: A review of the literature.

Current Issues in ICD SVT-VT Discrimination: Pacing for SVT-VT Discrimination

A simple echocardiographic method to detect atrioventricular dissociation. A useful aid in the differential diagnosis of regular tachycardia with wide QRS complexes.

Regular tachycardia with wide QRS complexes may be difficult to classify as supraventricular (SVT) or ventricular (VT) without electrophysiologic studies. We felt that hemodynamic differences between VT and SVT should allow their distinction by echocardiography. In this study, we utilized high speed M-mode echocardiography in the usual projections in eight patients during tachycardia. Two patie...

Critical analysis of dual-chamber implantable cardioverter-defibrillator arrhythmia detection : results and technical considerations.

BACKGROUND One of the perceived benefits of dual-chamber implantable cardioverter-defibrillators (ICDs) is the reduction in inappropriate therapy due to new detection algorithms. It was the purpose of the present investigation to propose methods to minimize bias during such comparisons and to report the arrhythmia detection clinical results of the PR Logic dual-chamber detection algorithm in th...

Discrimination of ventricular tachycardia from supraventricular tachycardia in implantable cardioverter defibrillators by automated electrogram morphology analysis: can leads finally replace the electrophysiologist?

Inappropriate device discharges for misclassified supraventricular tachycardia (SVT) may be considered as unavoidable burden within the safety philosophy of implantable cardioverter defibrillator (ICD) therapy. At least, this seems to be the painful lesson that patients and their caring doctors had to learn during the past decade with ever increasing rates of device implantation for secondary a...

Performance of a new single-chamber ICD algorithm: discrimination of supraventricular and ventricular tachycardia based on vector timing and correlation.

AIMS Interval- and morphology-based algorithms have been used in modern implantable cardioverter defibrillators (ICDs) to discriminate supraventricular tachycardia (SVT) from other rhythms. A newly developed ICD discrimination algorithm, Rhythm ID (Guidant Corporation, St Paul, MN, USA), uses both interval-based metrics and an electrogram vector timing and correlation (VTC) algorithm in a dual-...