Paroxysmal atrial fibrillation is uncommon in outpatients with chronic heart failure.
OBJECTIVE
The objective was to evaluate the prevalence of paroxysmal atrial fibrillation (PAF) in patients with heart failure (HF) due to systolic dysfunction.


METHODS
We included 79 patients (age 68 years, LVEF 30%) with HF and sinus-rhythm (SR) referred to a HF outpatient clinic. A 48 hours Holter ECG and a follow-up ECG were performed. RESULTS. One patient had one episode of PAF. Thirty-two (41%) patients had episodes of irregular atrial runs (AR). The numbers of QRS complexes during AR were 7.2+/-2.9 (mean+/-SD). Patients with AR were older than patients with SR, p =0.02 and more often of female sex, p =0.04. Multivariate logistic regression analysis showed that age and female sex were independently correlated with AR with adjusted OR of 1.1 (per year, 95% CI 1.02-1.14, p =0.01) and 4.0 (1.05-15.07, p =0.04), respectively. The presence of AR did not predict development of new-onset AF.


CONCLUSIONS
Outpatients with HF due to systolic dysfunction did not present with PAF during 48 hours Holter, but had several episodes of AR. The clinical and prognostic importance of AR deserves further investigation.
Department of Cardiology and Endocrinology, Frederiksberg University Hospital, Frederiksberg, Denmark. pernillecorell@dadlnet.dk
Pernille
P
Corell
Finn
F
Gustafsson
Jesper
J
Mehlsen
Jens
J
Rosenberg
Per
P
Hildebrandt
D000367:Age Factors; D000368:Aged; D001281:Atrial Fibrillation / Q000453:epidemiology* / Q000209:etiology / Q000503:physiopathology; D002908:Chronic Disease; D003718:Denmark / Q000453:epidemiology; D015716:Electrocardiography, Ambulatory; D005260:Female; D054143:Heart Failure, Systolic / Q000150:complications / Q000453:epidemiology* / Q000503:physiopathology; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D010045:Outpatients / Q000706:statistics & numerical data*; D015995:Prevalence; D018570:Risk Assessment; D012307:Risk Factors; D012737:Sex Factors