Use of event markers during exercise testing to optimize morphology criterion programming of implantable defibrillator.
Defibrillator. The present generation implantable defibrillator introduced on-line event markers that can be used to evaluate tachycardia detection in the electrophysiological testing mode. These markers were used to assess the appropriateness of programming the morphology criterion for defection of...
| Publicado en: | Pacing & Clinical Electrophysiology Vol. 15; no. 7; pp. 1025 - 1033 |
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| Autores principales: | , |
| Formato: | research Journal Article |
| Publicado: |
Wiley-Blackwell
Jul1992
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=106087173&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 106087173 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 01478389 4F8 jtl: Pacing & Clinical Electrophysiology issn: 01478389 maglogo: Y pubinfo: dt: Jul1992 vid: 15 iid: 7 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 106087173 2009413551 10.1111/j.1540-8159.1992.tb03096.x NLM1378594 106087173 ppf: 1025 ppct: 8 formats: fmt: @attributes: type: P tig: atl: Use of event markers during exercise testing to optimize morphology criterion programming of implantable defibrillator. aug: au: Martin D Venditti FJ Jr. sug: subj: Algorithms Cardioversion Equipment and Supplies Prostheses and Implants Tachycardia Diagnosis Electrocardiography Exercise Physiology Exercise Test Female Male Middle Age Prospective Studies Reproducibility of Results Tachycardia Prevention and Control Human Middle Aged: 45-64 years Female Male ab: Defibrillator. The present generation implantable defibrillator introduced on-line event markers that can be used to evaluate tachycardia detection in the electrophysiological testing mode. These markers were used to assess the appropriateness of programming the morphology criterion for defection of ventricular tachycardia. Twenty-one consecutive patients (19 men, 2 women) performed 29 bicycle exercise tests with real-time recording of the electrocardiogram and the event markers on a multichannel recorder. Mean ejection fraction was 29% (range 15%-69%). Seven patients were taking antiarrhythmic agents. Twelve patients satisfied the morphology criterion at rest (n = 1) or during exercise (group I), and nine patients did not (group II). One patient was excluded from analysis because of continuous ventricular pacing. Mean peak heart rate was 130 beats/min in group I and 125 beats/min in group II. No statistical differences existed between the groups in relation to cycle length of ventricular tachycardia and mode of induction of arrhythmia, QRS duration on the electrocardiogram, during native rhythm, amplitude and duration of defibrillation patch R wave, calculated duty cycle at peak heart rate, and number of discharges of the automatic implantable cardioverter defibrillator at 2 to 14 months of follow-up time. It is concluded that clinical, electrocardiographic, and implantation data are unreliable in predicting satisfaction of the morphology criterion during high heart rates in native rhythm. Formal exercise testing in the electrophysiological mode enables a rational decision to be made about the appropriateness of the use of probability density function in each patient. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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