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Cited by 144Cardiac electrophysiology and arrhythmiasCardiac Arrhythmias and TreatmentsCardiac pacing and defibrillation studies

The DOI matches its Crossref record; 46 of the 48 references it cites were found in a registry or an index.

Spontaneous sequences of onset of torsade de pointes in patients with acquired prolonged repolarization: Quantitative analysis of Holter recordings

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Locati, Emanuela H., Maison-Blanche, Pierre, Dejode, Patrick, Cauchemez, Bruno, Coumel, Philippe·1995·Journal of the American College of Cardiology
DOI 10.1016/0735-1097(95)00100-i
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Abstract

Objectives This study investigated the cycle length changes preceding the spontaneous onset of torsade de pointes in patients with acquired prolonged ventricular repolarization.Background Torsade de pointes is a polymorphic ventricular tachycardia generally associated with prolonged ventricular repolarization. Because torsade de pointes is not inducible by programmed electrical stimulation, quantitative analysis of Holter recordings of spontaneous episodes may clarify the mechanisms favoring the onset of torsade de pointes in actual clinical conditions.Methods The digitized Holter recordings of 12 patients were analyzed by a computerized Holter system (ATREC). All arrhythmias were grouped according to three classes: 1) isolated premature ventricular beats (n = 47,147, mean/patient [+/- SD] 3,929 +/- 11,571); 2) salvos of 2 to 4 consecutive beats (n = 2,003, mean/patient 167 +/- 359); 3) torsade de pointes > or = 5 beats (n = 105, mean/patient 9 +/- 11). For each patient and class of arrhythmias, six variables were computed from the 10 min and the 10 cycles preceding the event onset.Results A significant heart rate increase in the last minute (p < 0.01) and typical oscillatory short-long-short cycle length sequences preceded the onset of arrhythmias, with greater oscillation preceding torsade de pointes than salvos and premature ventricular beats. The cycle lengths preceding the onset were highly correlated with the class of arrhythmias (r = 0.65, p < 0.005) and allowed the correct classification of 69% of events by discriminant analysis (p < 0.0001). A significant negative correlation was observed between the duration of torsade de pointes and the mean length of the initial cycles (r = -0.62, p < 0.001), indicating that longer torsade de pointes had a faster rate than that at onset.Conclusions In patients with acquired prolonged repolarization, the spontaneous onset of ventricular arrhythmias was preceded by an increasing heart rate in the last minute and escalating oscillatory "short-long-short" cycle length patterns, with greater oscillations preceding torsade de pointes than salvos and isolated ventricular beats. These findings suggest that adrenergic- and pause-dependent mechanisms (possibly inducing afterdepolarizations and triggered activity) may have a synergetic role in the genesis of complex ventricular arrhythmias associated with delayed ventricular repolarization.

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Show all 48 references

Research works printed but not linked: 4

  1. Dessertenne, 1966, La tachycardie ventriculairea`deux foyers opposes variables, Arch Mal Coeur, 59, 263
  2. Coumel, 1985, Computerized analysis of dynamic electrocardiograms: a tool for comprehensive electrophysiology. A description of the ATREC II system, Clin Prog, 3, 181
  3. Priori, 1990, Mechanisms underlying early and delayed afterdepolarization induced by catecholamines in isolated adult ventricular myocites, Am J Physiol, 258, 1796
  4. Saoudi, 1994, The compensatory pause prevention algorithm. Structure and early evolution, Eur J Card Pacing Electrophysiol, 1, 45

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Metadata

Authors
Locati, E. H., Maison-Blanche, P., Dejode, P., Cauchemez, B., & Coumel, P.
Affiliations
  • University of Milan (IT)
  • Hôpital Lariboisière (FR)
Corresponding author
Locati, Emanuela H.
ORCID
Locati, Emanuela H.
Venue
Journal of the American College of Cardiology
Publisher
Elsevier BV
Published
1995-06
Volume
25
Issue
7
Pages
1564-1575
ISSN
0735-1097 (ISSN-L)
DOI
10.1016/0735-1097(95)00100-i
OpenAlex
W1980496173
Cited by
144
References
48
Citations by year
2024: 5 · 2023: 1 · 2020: 1 · 2019: 1 · 2018: 1 · 2017: 4 · 2016: 1 · 2015: 6 · 2014: 2 · 2012: 3
FWCI
8.24
Type
journal article
Language
en
Open access
Licence
Locations
  • Journal of the American College of Cardiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Arrhythmias and Treatments
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac pacing and defibrillation studies
Keywords
torsades de pointes, heart rate increase, premature ventricular contractions, ventricular tachycardia, arrhythmia prediction, QT prolongation, discriminant analysis
MeSH terms
Aged, Cardiac Complexes, Premature, Female, Heart Conduction System, Heart Rate, Humans, Male, Signal Processing, Computer-Assisted, Time Factors, Electrocardiography, Ambulatory, Multivariate Analysis, Discriminant Analysis, Torsades de Pointes

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