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

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 varie...

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Published in:Pacing & Clinical Electrophysiology Vol. 19; no. 10; pp. 1493 - 1502
Main Authors: Chiang CJ, Jenkins JM, Caswell SA, Stevenson SA, Dicarlo LA
Format: Journal Article
Published: Wiley-Blackwell Oct1996
Online Access:View this record in EBSCOhost
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      dt: Oct1996
      vid: 19
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      pub: Wiley-Blackwell
      place: Malden, Massachusetts
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        10.1111/j.1540-8159.1996.tb03164.x
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        atl: Augmented two-channel arrhythmia detection: an efficient diagnostic method for implantable devices.
      aug:
        au:
          Chiang CJ
          Jenkins JM
          Caswell SA
          Stevenson SA
          Dicarlo LA
      sug:
        subj:
          Arrhythmia Diagnosis
          Defibrillators, Implantable
          Algorithms
          Arrhythmia Therapy
          Atrial Fibrillation Diagnosis
          Atrial Fibrillation Therapy
          Atrial Flutter Diagnosis
          Atrial Flutter Therapy
          Electrocardiography
          Electronics
          Tachycardia, Ventricular Diagnosis
          Tachycardia, Ventricular Therapy
      ab: 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 tack cardia identification. To address this problem, the augmented two-channel arrhythmia detection (A2GAD) 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 A2GAD. validating its potential for implementation in future implantable devices.
      pubtype: Academic Journal
      doctype: Journal Article
      ougenre: Article
    language: English
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