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Type: Journal article
Title: Impact of body mass index on mortality and hospitalisation of patients with atrial fibrillation
Author: Ball, J.
Lochen, M.-.L.
Carrington, M.J.
Wiley, J.F.
Stewart, S.
Citation: European Journal of Cardiovascular Nursing, 2018; 17(7):627-636
Publisher: SAGE Publications
Issue Date: 2018
ISSN: 1474-5151
Statement of
Jocasta Ball, Maja-Lisa Løchen, Melinda J Carrington, Joshua F Wiley and Simon Stewart
Abstract: Background: Atrial fibrillation represents a substantial clinical and public health issue. The definitive impact of body mass index on prognosis of patients with chronic (persistent or permanent) atrial fibrillation remains undetermined. Aim: The purpose of this study was to investigate the association of body mass index with health outcomes (mortality and re-hospitalisation) of patients with chronic atrial fibrillation. Methods: Using data from the Standard versus Atrial Fibrillation spEcific managemenT strategY (SAFETY) trial (a randomised controlled trial of home-based, atrial fibrillation-specific disease management), we performed post-hoc analyses of mortality and re-hospitalisation outcomes during minimum 24-month follow-up according to baseline body mass index profile. Results: Of 297 participants (mean age 71±11 years, 47% female, mean body mass index 29.6±6.7 kg/m²), 35.0% of participants were overweight (body mass index 25.0-29.9 kg/m²) and 43.1% were obese (body mass index≥30 kg/m²). During follow-up, n=42 died including 16/65 (24.6%) classified as normal body mass index, 16/104 (15.4%) classified as overweight and 10/128 (7.8%) classified as obese. Increasing body mass index was not associated with increased mortality but was associated with re-hospitalisation due to cardiovascular disease with greater length-of-stay (odds ratio 1.05; 95% confidence interval 1.00-1.09, p=0.032). Obese individuals experienced increased unplanned admissions compared to overweight individuals (incidence rate ratio 0.71; 95% confidence interval 0.53-0.96, p=0.028), and increased cardiovascular-related (incidence rate ratio 0.58; 95% confidence interval 0.39-0.86, p=0.007) and all-cause admissions (incidence rate ratio 0.63; 95% confidence interval 0.45-0.89, p=0.008) compared to those classified as normal body mass index. Conclusion: Overweight and obesity were not associated with survival in patients with chronic atrial fibrillation but were associated with more frequent hospital care and prolonged stay.
Keywords: Atrial fibrillation; body mass index; mortality; re-hospitalisation
Rights: © The European Society of Cardiology 2018. Article reuse guidelines:
RMID: 0030087336
DOI: 10.1177/1474515118772446
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Appears in Collections:Medicine publications

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