BACKGROUND: @entity4710 ( @entity1129 /AF) have been associated with an increased risk of mortality, morbidity and @entity385 . Up to now, single chamber @entity1479 diagnostics was not able to detect @entity1129 /AF, therefore the incidence of new onset @entity1129 /AF in @entity1 with single chamber @entity1479 is not known. OBJECTIVE: To evaluate incidence and predictors of @entity1129 /AF occurrence in @entity1 with dual-chamber @entity1479 with no pacing indications and no history of @entity1129 /AF that strictly mimic single chamber @entity1479 recipient. METHODS _ RESULTS: Consecutive dual-chamber @entity1479 @entity1 were prospectively followed by 47 Italian cardiologic centers in an observational research. Clinical and device data were reviewed by expert cardiologists to assess @entity1129 /AF occurrence. Multivariate regression analysis evaluated the risk of new-onset @entity1129 /AF and its association with @entity1 ' baseline characteristics and with CHADS2 score. 428 (13.4% female, 64years old) @entity1 were followed for a median observation period of 31months. @entity1129 /AF episodes occurred in 160 (37.4%) @entity1 when considering at least 5min duration, in 95 (22.2%) for @entity1129 /AF >= 6h, in 47 (11.0%) for @entity1129 /AF >= 1day, in 29 (6.8%) for @entity1129 /AF >= 7days. @entity1 with CHADS2>= 2, who comprised 36% of the whole population, showed higher incidence of @entity1129 /AF >= 6h compared with @entity1 with CHADS2<2 (Hazard Ratio=1.69, 95% Confidence Interval=1.13-2.53, p=0.011). CONCLUSIONS: Our observations in a population of dual-chamber @entity1479 @entity1 with no pacing indications and no history of @entity1129 /AF, who strictly mimic single-chamber @entity1479 recipients, highlight that @entity1129 /AF episodes occurred in the 37.5% of the population and CHADS2 score is predictive of new-onset @entity1129 /AF.

Can we predict new AF occurrence in single-chamber XXXX @entity1 ? Insights from an observational investigation.

@entity1479 :: ('OMIM:252500', 'Disease') :: ['ICD'] @entity1 :: ('9606', 'Species') :: ['Patients', 'patients'] @entity1129 :: ('MESH:D001260', 'Disease') :: ['AT'] @entity4710 :: ('MESH:D013617', 'Disease') :: ['Atrial tachyarrhythmias'] @entity385 :: ('MESH:D002544', 'Disease') :: ['ischemic stroke']
@entity1479 :: (OMIM:252500,Disease) :: ['ICD']
