Cited by 156Cardiac Arrhythmias and TreatmentsCardiac electrophysiology and arrhythmiasCardiac pacing and defibrillation studies

Longitudinal Electrophysiologic Assessment of Asymptomatic Patients with the Wolff–Parkinson–White Electrocardiographs Pattern

Klein, George J., Yee, Raymond, Sharma, Arjun D.·1989·New England Journal of Medicine

Abstract

Although most asymptomatic patients with the Wolff-Parkinson-White electrocardiographic pattern have a good prognosis, some die suddenly. The mechanism of sudden death is usually ventricular fibrillation, which is triggered by atrial fibrillation with a rapid ventricular response rate. Electrophysiologic testing has been proposed to identify asymptomatic patients who may be at risk for sudden death. Meaningful application of such testing requires a knowledge of whether the electrophysiologic measurements are reproducible over time. Consequently, we performed electrophysiologic studies on two occasions at least 36 months apart (mean +/- SD, 54.7 +/- 14) in 29 asymptomatic patients with the pattern. Twenty-seven patients remained asymptomatic, and sustained supraventricular tachycardia developed in two during the follow-up period. Nine patients (31 percent) lost the capacity for preexcitation and anterograde conduction over the accessory pathway, which produces the Wolff-Parkinson-White pattern. The others had little change in measurements of conduction over the accessory pathway. Patients who lost conduction over the accessory pathway tended to be older (mean +/- SD, 50 +/- 18 vs. 39 +/- 11 years; P = 0.06) than patients who retained preexcitation, and they had longer anterograde effective refractory periods at the first assessment (414 +/- 158 vs. 295 +/- 27 msec; P = 0.003). We conclude that a considerable number of asymptomatic patients with the Wolff-Parkinson-White pattern lose their capacity for anterograde conduction over the accessory pathway. This loss of capacity probably contributes to the low mortality among asymptomatic patients.

Integrity signals

Registry

Crossref · 10.1056/nejm198905113201901

Cites

11 of 11 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Klein, G. J., Yee, R., & Sharma, A. D.
Affiliations
London Health Sciences Centre (CA)
Venue
New England Journal of Medicine
Published
1989-05-11
Volume
320
Issue
19
Pages
1229-1233
ISSN
  • 0028-4793 (ISSN-L)
  • 1533-4406
OpenAlex
W2340334067
Cited by
156
References
11
Citations by year
2026: 1 · 2024: 3 · 2023: 1 · 2022: 1 · 2021: 3 · 2020: 2 · 2019: 4 · 2018: 4 · 2017: 7 · 2016: 3 · 2015: 13 · 2014: 3 · 2013: 4 · 2012: 10
FWCI
6.18
Type
journal article
Language
en
Open access
closed
Locations
  • New England Journal of Medicine (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Arrhythmias and Treatments
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac pacing and defibrillation studies
Keywords
Wolff-Parkinson-White syndrome, asymptomatic patients, accessory pathway, preexcitation, effective refractory period, sudden cardiac death, ventricular fibrillation, atrial fibrillation, supraventricular tachycardia
MeSH terms
Atrial Fibrillation, Electrocardiography, Female, Heart Conduction System, Humans, Longitudinal Studies, Male, Middle Aged, Refractory Period, Electrophysiological, Ventricular Fibrillation, Wolff-Parkinson-White Syndrome

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review