Ventriculoatrial conduction capability and prevalence of 1:1 retrograde conduction during inducible sustained monomorphic ventricular tachycardia in 305 implantable cardioverter defibrillator recipients.
| Title: | Ventriculoatrial conduction capability and prevalence of 1:1 retrograde conduction during inducible sustained monomorphic ventricular tachycardia in 305 implantable cardioverter defibrillator recipients. |
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| Authors: | Militianu A; Arrhythmia Center, Sinai Hospital, Detroit, MI 48235, USA.; Salacata A; Meissner MD; Grill C; Mahmud R; Palti AJ; Ben David J; Mosteller R; Lessmeier TJ; Baga JJ; Pires LA; Schuger CD; Steinman RT; Lehmann MH |
| Source: | Pacing and clinical electrophysiology : PACE [Pacing Clin Electrophysiol] 1997 Oct; Vol. 20 (10 Pt 1), pp. 2378-84. |
| Publication Type: | Journal Article |
| Language: | English |
| Journal Info: | Publisher: Futura Pub. Co Country of Publication: United States NLM ID: 7803944 Publication Model: Print Cited Medium: Print ISSN: 0147-8389 (Print) Linking ISSN: 01478389 NLM ISO Abbreviation: Pacing Clin Electrophysiol Subsets: MEDLINE |
| Imprint Name(s): | Original Publication: Mount Kisco, N. Y. : Futura Pub. Co., c1978- |
| MeSH Terms: | Defibrillators, Implantable*; Heart Conduction System/*physiopathology ; Tachycardia, Ventricular/*therapy; Tachycardia, Ventricular/physiopathology ; Adolescent ; Adult ; Aged ; Aged, 80 and over ; Cardiac Pacing, Artificial ; Electrocardiography ; Female ; Humans ; Male ; Middle Aged |
| Abstract: | Despite the advent of dual chamber ICDs, differentiation of VT (SMVT) with 1:1 VA conduction will remain a challenge. In this study, VA conduction capability and prevalence of inducible sustained monomorphic (SM) VT with 1:1 VA conduction was assessed in 305 ICD recipients. SMVT with a mean cycle length (CL) of 304 +/- 61 ms was induced in 161 (53%) patients. Twenty-six percent of the patients maintained 1:1 VA conduction to CL < or = 400 ms during incremental ventricular pacing, regardless of presenting tachyarrhythmia or presence of inducible SMVT. Among ten patients who had inducible SMVT with possible 1:1 VA conduction (based on SMVT CL comparable to the shortest CL associated with 1:1 retrograde conduction during ventricular pacing), all seven with available intracardiac tracings had documented 1:1 VA conduction during the induced SMVT--representing 4.4% of the patients with inducible SMVT (95% CI 1.2%-7.6%), and 2.3% of the entire ICD cohort (95% CI 0.6%-4.0%). We conclude that about one-fifth of ICD recipients possess 1:1 VA conduction to CL < or = 400 ms and that inducible SMVT with 1:1 VA conduction can be demonstrated in a small but nonnegligible proportion of ICD recipients. These data are relevant to the design of tachyarrhythmia-discrimination algorithms for dual chamber ICDs. |
| Entry Date(s): | Date Created: 19971114 Date Completed: 19971219 Latest Revision: 20190726 |
| Update Code: | 20260130 |
| DOI: | 10.1111/j.1540-8159.1997.tb06074.x |
| PMID: | 9358476 |
| Database: | MEDLINE |
Journal Article