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Updated: Dec 23, 2025

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
Published on: February 26, 2013
Large vessel occlusion is independently associated with atrial fibrillation detection
J Pagola1, J Juega1, J Francisco-Pascual2,3
1Stroke Unit, Neurology Department and Medicine Department, Vall d'Hebrón Hospital and Autonomous University of Barcelona, Barcelona, Spain.
Insights
Early detection of paroxysmal atrial fibrillation (pAF) is crucial for preventing cardiac embolism. Large vessel occlusion in cryptogenic stroke is an independent marker for detecting pAF, aiding in timely intervention and stroke prevention.
Area of Science:
- Cardiology
- Neurology
- Medical Monitoring
Background:
- Covert paroxysmal atrial fibrillation (pAF) is a primary cause of cardiac embolism.
- Identifying early indicators of pAF is essential for stroke prevention.
Purpose of the Study:
- To identify parameters associated with early detection of pAF in patients with cryptogenic stroke using intensive cardiac monitoring.
- To evaluate the efficacy of continuous cardiac monitoring in identifying pAF in stroke patients.
Main Methods:
- The Crypto-AF study involved continuous cardiac monitoring of non-lacunar cryptogenic stroke patients for 28 days.
- Key parameters assessed included stroke severity, infarct patterns, large vessel occlusion (LVO), electrocardiography, Holter findings, left atrial volume index, and brain natriuretic peptide levels.
Main Results:
- pAF was detected in 23.1% of patients.
- Older age, hemorrhagic infarction, large vessel occlusion (LVO), larger left atrial volume index, and higher brain natriuretic peptide levels were associated with pAF detection.
- LVO was independently associated with pAF detection and longer pAF episodes (>5 hours).
Conclusions:
- Large vessel occlusion (LVO) in cryptogenic stroke is an independent predictor of paroxysmal atrial fibrillation (pAF).
- Identifying LVO can aid in the early detection of pAF, facilitating timely treatment and reducing stroke recurrence.
Background And Purpose:
Covert paroxysmal atrial fibrillation (pAF) is the most frequent cause of cardiac embolism. Our goal was to discover parameters associated with early pAF detection with intensive cardiac monitoring.
Method:
Crypto-AF was a multicentre prospective study (four Comprehensive Stroke Centres) to detect pAF in non-lacunar cryptogenic stroke continuously monitored within the first 28 days. Stroke severity, infarct pattern, large vessel occlusion (LVO) at baseline, electrocardiography analysis, supraventricular extrasystolia in the Holter examination, left atrial volume index and brain natriuretic peptide level were assessed. The percentage of pAF detection and pAF episodes lasting more than 5 h were registered.
Results:
Out of 296 patients, 264 patients completed the monitoring period with 23.1% (61/264) of pAF detection. Patients with pAF were older [odds ratio (OR) 1.04, 95% confidence interval (CI) 1.01-1.08], they had more haemorrhagic infarction (OR 4.03, 95% CI 1.44-11.22), they were more likely to have LVO (OR 4.29, 95% CI 2.31-7.97) (P < 0.0001), they had a larger left atrial volume index (OR 1.03, 95% CI 1.01-1.1) (P = 0.0002) and they had a higher level of brain natriuretic peptide (OR 1.01, 95% CI 1.0-1.1). Age and LVO were independently associated with pAF detection (OR 1.06, 95% CI 1.00-1.16, and OR 4.58, 95% CI 2.27- 21.38, respectively). Patients with LVO had higher cumulative incidence of pAF (log rank P < 0.001) and more percentage of pAF > 5 h [29.6% (21/71) vs. 8.3% (12/144); OR 4.62, 95% CI 2.11-10.08; P < 0.001]. In a mean follow-up of 26.82 months (SD 10.15) the stroke recurrence rate was 4.6% (12/260).
Conclusions:
Large vessel occlusion in cryptogenic stroke emerged as an independent marker of pAF.
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