Cited by 229Atrial Fibrillation Management and OutcomesAcute Ischemic Stroke ManagementCardiovascular and Diving-Related Complications

Improved Detection of Silent Atrial Fibrillation Using 72-Hour Holter ECG in Patients With Ischemic Stroke: A Prospective Multicenter Cohort Study

Grond, Martin, Jauss, Marek, Hamann, Gerhard, Stark, Erwin, Veltkamp, Roland, Nabavi, Darius, Horn, Markus, Weimar, Christian +4 more·2013·Stroke

Abstract

BACKGROUND AND PURPOSE: Adequate diagnosis of atrial fibrillation (AF), including paroxysmal AF, is an important part of stroke workup. Prolonged ECG monitoring may improve the detection of paroxysmal, previously undiagnosed AF (unknown AF). Therefore, we evaluated systematic 72-hour Holter ECG monitoring to detect unknown AF for the workup of patients with stroke. METHODS: Unselected survivors of a stroke or transient ischemic attack (TIA) without known AF were enrolled in a prospective, multicenter cohort study of 72-hour Holter ECG monitoring in 9 German secondary and tertiary stroke centers between May 2010 and January 2011. In addition to standardized workup of stroke pathogenesis according to the German Stroke Unit protocol, all patients underwent 72-hour Holter ECG monitoring directly after admission. All ECGs were centrally analyzed by 2 independent observers. We determined the proportion of unknown AF and compared the detection rates of 72- and 24-hour monitoring. RESULTS: A total of 1135 patients were enrolled (mean age, 67 years [SD, 13.1 years], 45% women, 29% TIA). Unknown AF was detected in 49 out of 1135 patients (4.3%, [95% confidence interval, 3.4-5.2%]) by 72-hour ECG monitoring. Unknown AF was diagnosed in 29 patients (2.6%) within the first 24 hours of ECG monitoring, and in 20 more patients only by 72 hours of ECG monitoring. The number needed to screen by 72-hour ECG was 55 patients (95% confidence interval [35-123]) for each additional AF diagnosis. Patients with unknown AF were significantly older and had more often a history of previous stroke. Patients with unknown AF were equally distributed within categories of pathogenesis according to Trial of Org 10172 in Acute Stroke Treatment (TOAST) classification. CONCLUSIONS: In unselected survivors of stroke or TIA, 72-hour ECG monitoring is feasible and improves the detection rate of silent paroxysmal AF.

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Crossref · 10.1161/strokeaha.113.001884

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  • 20-30% of patients with an ischaemic stroke have AF diagnosed before, during, or after the initial event.

    “Contemporary studies show that 20-30% of patients with an ischaemic stroke have AF diagnosed before, during, or after the initial event.17,26,27”
  • There is good evidence that prolonged ECG monitoring enhances the detection of undiagnosed AF, for 72 hours after a stroke, for even longer periods, or by daily short-term ECG recording in patients over 75 years of age.

    “There is good evidence that prolonged ECG monitoring enhances the detection of undiagnosed AF, for 72 hours after a stroke, 27,127 for even longer periods, 18,128 or by daily short-term ECG recording in patients over 75 years of age 129 (Web Addenda Figure 1).”
  • Several studies have also found AF in patients in whom another competing cause for stroke has been identified clinically.

    “Several studies have also found AF in patients in whom another competing cause for stroke has been identified clinically (e.g.hypertension or carotid artery stenosis).27,127”

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Authors
Grond, M., Jauss, M., Hamann, G., Stark, E., Veltkamp, R., Nabavi, D., Horn, M., Weimar, C., Köhrmann, M., Wachter, R., Rosin, L., & Kirchhof, P.
Affiliations
Heidelberg University (DE)
Venue
Stroke
Published
2013-12
Volume
44
Issue
12
Pages
3357-3364
ISSN
  • 0039-2499 (ISSN-L)
  • 1524-4628
OpenAlex
W2164956985
Cited by
229
References
61
Citations by year
2026: 10 · 2025: 8 · 2024: 14 · 2023: 13 · 2022: 22 · 2021: 24 · 2020: 26 · 2019: 13 · 2018: 23 · 2017: 22 · 2016: 22 · 2015: 24 · 2014: 7 · 2013: 1
FWCI
12.24
Type
journal article
Language
en
Open access
closed
Locations
  • Stroke (publishedVersion)
  • PubMed (publishedVersion)
  • Universitätsbibliographie, Universität Duisburg-Essen (submittedVersion)
  • GRO (submittedVersion)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Atrial Fibrillation Management and Outcomes
  • Health Sciences › Medicine › Epidemiology › Acute Ischemic Stroke Management
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Cardiovascular and Diving-Related Complications
Keywords
silent atrial fibrillation, paroxysmal atrial fibrillation, ischemic stroke, transient ischemic attack, 24-hour ECG monitoring, TOAST classification, stroke pathogenesis
MeSH terms
Age Factors, Aged, Aged, 80 and over, Atrial Fibrillation, Brain Ischemia, Ischemic Attack, Transient, Female, Humans, Male, Middle Aged, Prospective Studies, Time Factors, Cohort Studies, Electrocardiography, Ambulatory, Stroke

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