Risk of stroke in chronic heart failure patients with preserved ejection fraction, but without atrial fibrillation: analysis of the CHARM-Preserved and I-Preserve trials

Abdul-Rahim, A. H. et al. (2017) Risk of stroke in chronic heart failure patients with preserved ejection fraction, but without atrial fibrillation: analysis of the CHARM-Preserved and I-Preserve trials. European Heart Journal, 38(10), pp. 742-750. (doi:10.1093/eurheartj/ehw509) (PMID:28426886) (PMCID:PMC5460584)

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Abstract

Aims: The incidence and predictors of stroke in patients with heart failure and preserved ejection fraction (HF-PEF), but without atrial fibrillation (AF), are unknown. We described the incidence of stroke in HF-PEF patients with and without AF and predictors of stroke in those without AF. Methods and results: We pooled data from the CHARM-Preserved and I-Preserve trials. Using Cox regression, we derived a model for stroke in patients without AF in this cohort and compared its performance with a published model in heart failure patients with reduced ejection fraction (HF-REF)—predictive variables: age, body mass index, New York Heart Association class, history of stroke, and insulin-treated diabetes. The two stroke models were compared and Kaplan–Meier curves for stroke estimated. The risk model was validated in a third HF-PEF trial. Of the 6701 patients, 4676 did not have AF. Stroke occurred in 124 (6.1%) with AF and in 171 (3.7%) without AF (rates 1.80 and 1.00 per 100 patient-years, respectively). There was no difference in performance of the stroke model derived in the HF-PEF cohort and the published HF-REF model (c-index 0.71, 95% confidence interval 0.57–0.84 vs. 0.73, 0.59–0.85, respectively) as the predictive variables overlapped. The model performed well in the validation cohort (0.86, 0.62–0.99). The rate of stroke in patients in the upper third of risk approximated to that in patients with AF (1.60 and 1.80 per 100 patient-years, respectively). Conclusions: A small number of clinical variables identify a subset of patients with HF-PEF, but without AF, at elevated risk of stroke.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Perez, Mrs Ana and Abdul-Rahim, Dr Azmil and Macisaac, Dr Rachael and Lees, Professor Kennedy and Jhund, Dr Pardeep and McMurray, Professor John
Authors: Abdul-Rahim, A. H., Perez, A.-C., MacIsaac, R. L., Jhund, P. S., Claggett, B. L., Carson, P. E., Komajda, M., McKelvie, R. S., Zile, M. R., Swedberg, K., Yusuf, S., Pfeffer, M. A., Solomon, S. D., Lip, G. Y.H., Lees, K. R., and McMurray, J. J.V.
College/School:College of Medical Veterinary and Life Sciences > Institute of Cardiovascular and Medical Sciences > Exercise Physiology/Sports Medicine > Clinical Genetics/Genomics
College of Medical Veterinary and Life Sciences > Institute of Health and Wellbeing > MRC/CSO Unit
Journal Name:European Heart Journal
Publisher:Oxford University Press
ISSN:0195-668X
ISSN (Online):1522-964
Published Online:13 November 2016
Copyright Holders:Copyright © 2016 Oxford University Press
First Published:First published in European Heart Journal 38(10):742-750
Publisher Policy:Reproduced under a Creative Commons License
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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
727621SPHSU Core Renewal: Neighbourhoods and Communities Research ProgrammeAnne EllawayMedical Research Council (MRC)MC_UU_12017/10IHW - MRC/CSO SPHU