Journal
ANNALS OF NONINVASIVE ELECTROCARDIOLOGY
Volume 19, Issue 5, Pages 483-489Publisher
WILEY-BLACKWELL
DOI: 10.1111/anec.12165
Keywords
multifocal atrial rhythms; Ikaria study; electrocardiography; nonagenariars; prognosis
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Funding
- Hellenic Society of Cardiology
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BackgroundMultifocal atrial tachycardias confer an adverse prognosis in hospitalized patients. We assessed the prognostic impact of multifocal atrial rhythms (MARseither chaotic atrial rhythm or multifocal atrial tachycardia/bradycardia) in very elderly outpatients. MethodsOne hundred ten subjects aged 60-74 years, 112 aged 75-89 years, and 61 over 90 years old, were enrolled and prospectively evaluated. Several demographic and clinical characteristic were recorded in all individuals. ResultsA high prevalence of MARs was detected in the study population (namely, 6%), which in subjects >90 years was even higher (15%). Individuals with MARs were older, more often female and less active. In multivariate analysis, independent predictors of MARs were age (OR = 1.07, 95% CI: 1.02-1.13, P = 0.01) and female sex (OR = 4.77, 95% CI: 1.23-18.48, P = 0.02). The mortality rate during the follow-up period was 8.4% without differences between age groups (P = 0.209). In particular, mortality rate was 6% in individuals with MARs and 9% in those without (P = 0.72). Mortality was associated with age (OR 1.07, 95% CI: 1.02-1.12, P = 0.005) and history of cardiovascular disease at baseline (OR 4.57, 95% CI: 1.87-11.2 P = 0.001). ConclusionsContrary to hospitalized individuals with multifocal atrial tachycardias, MARs were not associated with increased mortality in elderly outpatients in this study.
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