Document Detail


Automatic recognition of ventricular arrhythmias using temporal electrogram analysis.
MedLine Citation:
PMID:  1719504     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Future antitachycardia devices must be able to deliver a variety of therapies according to the requirements of the underlying arrhythmia. To ensure that appropriate treatment is prescribed the device must use a detection algorithm that is able to discriminate between multiple arrhythmias. Current criteria such as rate, change of rate, duration at high rate, and high rate stability are inadequate for this purpose. Many algorithms that evaluate the morphology of the endocardial electrogram are of too great a complexity to be incorporated in implantable devices that require real-time analysis without undue power consumption. In this study the sensitivity of a simple morphological technique (temporal electrogram analysis) is examined. The method sets threshold 'rails' above and below the isoelectric line and classifies ECG complexes according to the sequence and duration of rail excursions. A total of 27 ventricular tachyarrhythmias were induced in 25 patients (17 with a history of recurrent arrhythmias and eight undergoing risk stratification postmyocardial infarction). Temporal electrogram analysis (TEA), initially detected the onset of the ventricular arrhythmia in all patients whose surface ECG showed polymorphic or right bundle branch block pattern tachycardia, in 5/8 of cases with left bundle branch block pattern and in 4/5 of patients with concordant complexes across the precordial leads. After minor modifications the overall sensitivity of the method was improved to 95% (26/27 arrhythmias detected). TEA is a technique of low computational demands, which in this study, reliably discriminated between resting sinus rhythm and ventricular arrhythmias.
Authors:
V E Paul; T Farrell; J Gill; D W Davies; D E Ward; A J Camm
Related Documents :
11940884 - Atropine sulfate premedication and cardiac arrhythmia in electroconvulsive therapy (ect).
3760244 - The effect of c1 spinal cord transection or bilateral adrenal vein ligation on thiorida...
15253114 - The reconstruction, from a set of points, and analysis of the interior surface of the h...
9703254 - Ferrous ion diminished the antiarrhythmic effect of naloxone in myocardial ischemia of ...
2351494 - Hemodynamic evaluation of common cardiac arrhythmias.
2483124 - Hypothermia and the stress response to cardiopulmonary bypass.
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Pacing and clinical electrophysiology : PACE     Volume:  14     ISSN:  0147-8389     ISO Abbreviation:  Pacing Clin Electrophysiol     Publication Date:  1991 Aug 
Date Detail:
Created Date:  1991-11-27     Completed Date:  1991-11-27     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  7803944     Medline TA:  Pacing Clin Electrophysiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1265-73     Citation Subset:  IM    
Affiliation:
Department of Cardiological Sciences, St. Georges Hospital Medical School, London, England.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Arrhythmias, Cardiac / diagnosis*
Electrocardiography / methods*
Female
Heart Ventricles
Humans
Male
Middle Aged
Signal Processing, Computer-Assisted

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Practical aspects of rate adaptive atrial (AAI,R) pacing: clinical experiences in 44 patients.
Next Document:  Persistent atrial standstill--clinical, electrophysiological, and morphological study.