Cited by 254Atrial Fibrillation Management and OutcomesCardiovascular and Diving-Related ComplicationsAcute Ischemic Stroke Management

Incidence of atrial fibrillation detected by implantable loop recorders in unexplained stroke

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Cotter, Paul E., Martin, Peter J., Ring, Liam, Warburton, Elizabeth A., Belham, Mark, Pugh, Peter J.·2013·Neurology

Abstract

OBJECTIVES: The usefulness of the implantable loop recorder (ILR) with improved atrial fibrillation (AF) detection capability (Reveal XT) and the factors associated with AF in the setting of unexplained stroke were investigated. METHODS: A cohort study is reported of 51 patients in whom ILRs were implanted for the investigation of ischemic stroke for which no cause had been found (cryptogenic) following appropriate vascular and cardiac imaging and at least 24 hours of cardiac rhythm monitoring. RESULTS: The patients were aged from 17 to 73 (median 52) years. Of the 30 patients with a shunt investigation, 22 had a patent foramen ovale (73.3%; 95% confidence interval [CI] 56.5%-90.1%). AF was identified in 13 (25.5%; 95% CI 13.1%-37.9%) cases. AF was associated with increasing age (p = 0.018), interatrial conduction block (p = 0.02), left atrial volume (p = 0.025), and the occurrence of atrial premature contractions on preceding external monitoring (p = 0.004). The median (range) of monitoring prior to AF detection was 48 (0-154) days. CONCLUSION: In patients with unexplained stroke, AF was detected by ILR in 25.5%. Predictors of AF were identified, which may help to target investigations. ILRs may have a central role in the future in the investigation of patients with unexplained stroke.

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Crossref · 10.1212/wnl.0b013e31828f1828

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  • Much longer monitoring using ILRs can further improve the diagnostic yield for syncope, as high as 85% in some studies.

    “Much longer monitoring using ILRs can further improve the diagnostic yield for syncope, as high as 85% in some studies (Cotter et al., 2013).”

    From 2017 ISHNE-HRS expert consensus statement on ambulatory ECG and external cardiac monitoring/telemetry (2017) · cites this paper as Cotter et al., 2013

    The Discussion (page unavailable) says ILRs have primarily been used to investigate syncope, but its finding that longer monitoring improves diagnostic yield concerns atrial fibrillation after stroke, not syncope. The Results report AF detection in 25.5% of the stroke cohort; the Discussion’s 85.4% figure is device specificity for AF detection, not a diagnostic yield for syncope. (LLM, conf=0.88)

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Authors
Cotter, P. E., Martin, P. J., Ring, L., Warburton, E. A., Belham, M., & Pugh, P. J.
Affiliations
Cambridge University Hospitals NHS Foundation Trust (GB)
Venue
Neurology
Published
2013-04-23
Volume
80
Issue
17
Pages
1546-1550
ISSN
  • 0028-3878 (ISSN-L)
  • 1526-632X
OpenAlex
W2021263194
Cited by
254
References
19
Citations by year
2026: 4 · 2025: 7 · 2024: 10 · 2023: 11 · 2022: 18 · 2021: 25 · 2020: 11 · 2019: 21 · 2018: 18 · 2017: 21 · 2016: 26 · 2015: 29 · 2014: 44 · 2013: 9
FWCI
24.45
Type
journal article
Language
en
Open access
Locations
  • Neurology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Atrial Fibrillation Management and Outcomes
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Cardiovascular and Diving-Related Complications
  • Health Sciences › Medicine › Epidemiology › Acute Ischemic Stroke Management
Keywords
atrial fibrillation, implantable loop recorder, cryptogenic stroke, patent foramen ovale, left atrial volume, premature atrial contractions, atrial fibrillation risk factors, cardiac rhythm monitoring
MeSH terms
Adolescent, Adult, Aged, Atrial Fibrillation, Female, Humans, Male, Middle Aged, Monitoring, Physiologic, Cohort Studies, Incidence, Stroke, Young Adult

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