Augmented two-channel arrhythmia detection: an efficient diagnostic method for implantable devices.

C M Chiang; J M Jenkins; S A Caswell; S A Stevenson; L A DiCarlo

doi:10.1111/j.1540-8159.1996.tb03164.x

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PubMed · 8904542

Augmented two-channel arrhythmia detection: an efficient diagnostic method for implantable devices.

C M Chiang·J M Jenkins·S A Caswell·S A Stevenson·L A DiCarlo

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Abstract

ICDs are highly effective in preventing sudden cardiac death. However, inappropriate device shocks caused by false-positive diagnoses are estimated to happen in 20% of all patients. The need for implantable electrical devices to detect with precision arrhythmias requiring therapy has spawned a variety of proposals for better means of tachycardia identification. To address this problem, the augmented two-channel arrhythmia detection (A2CAD) algorithm, a real-time scheme utilizing timing and morphology from both the atrial and ventricular channels, is introduced. The algorithm uses rate detection as a first stage and augments this with morphological signal analysis in rhythms that confound the rate only diagnoses. The software executes in real-time (online), and has been tested on 60 passages of two-channel intracardiac signals. The following arrhythmias constituted the test set: 10 AF and/or atrial flutter; 15 SVT; 16 VT; 10 ventricular flutter or VF; 5 sinus tachycardia; and 4 cases of AF concurrent with VF. Results from 60 patient cases indicate 57 (95%) of 60 success rate for A2CAD, validating its potential for implementation in future implantable devices.

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Algorithms Arrhythmias, Cardiac Atrial Fibrillation Atrial Flutter Defibrillators, Implantable Electrocardiography Electronics, Medical Humans Tachycardia, Ventricular Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S.

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C M Chiang, J M Jenkins, S A Caswell, S A Stevenson, L A DiCarlo. 1996. Augmented two-channel arrhythmia detection: an efficient diagnostic method for implantable devices.. https://doi.org/10.1111/j.1540-8159.1996.tb03164.x

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