XXXX Activity in Cryptogenic @entity385 and @entity63 : A Risk Factor for Recurrence.

@entity1 @entity8630 @entity64 @entity63 @entity11706 @entity955 @entity385
BACKGROUND: To characterize @entity8630 in @entity1 with @entity385 ( @entity385 ) or @entity63 ( @entity63 ) and determine its prognostic significance. METHODS: Retrospective cohort study, in which 184 @entity1 with @entity385 or @entity63 who had performed 24-hour Holter electrocardiogram were included. The median follow-up was 27.5  months. Baseline clinical and imagiologic characteristics, etiologic investigation results, and @entity385 and @entity63 recurrences information were collected. Number of @entity11706 ( @entity11706 ) per hour was categorized as less than 10 @entity11706 /hour, 10-30 @entity11706 /hour, and more than 30 @entity11706 /hour. RESULTS: Most of the @entity1 had less than 10 @entity11706 /hour (82.6%), 8.2% had 10-30 @entity11706 /hour, and 9.2% had more than 30 @entity11706 /hour. @entity1 with more than 30 @entity11706 /hour had a greater median left atrium diameter than @entity1 with 30 @entity11706 /hour or less (42  mm vs. 38  mm; 95% confidence interval [CI], .50-7.00; P  =  .003). Annual recurrence rate of @entity385 or @entity63 was 2.9% in @entity1 with less than 10 @entity11706 /hour, 11.0% in 10-30 @entity11706 /hour, and 22.6% in more than 30 @entity11706 /hour (P  =  .001). More than 30 @entity11706 /hour were independently associated with recurrence risk in multivariate survival analysis (hazard ratio, 3.40; 95% CI, 1.12-10.32; P  =  .030). CONCLUSIONS: In @entity1 with @entity385 or @entity63 , frequent @entity8630 (>30 @entity11706 /h) was independently associated with increased risk of @entity64 or @entity63 recurrence. Further studies need to validate frequent @entity8630 as a risk factor for recurrence in cryptogenic @entity64 and confirm its role as a predictor of occult @entity955 .
