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. 2022 Apr 7;17(4):e0266046.
doi: 10.1371/journal.pone.0266046. eCollection 2022.

Chronic kidney disease and atrial fibrillation: A dangerous combination

Gurbey Ocak  1   2   3 , Meriem Khairoun  2 , Othman Khairoun  2 , Willem Jan W Bos  1   4 , Edouard L Fu  3 , Maarten J Cramer  5 , Jan Westerink  6 , Marianne C Verhaar  2 , Frank L Visseren  6 ; UCC-SMART study group
Affiliations

Chronic kidney disease and atrial fibrillation: A dangerous combination

Gurbey Ocak et al. PLoS One. .

Abstract

Background: Chronic kidney disease (CKD) and atrial fibrillation (AF) are both risk factors for bleeding, stroke and mortality. The aim of our study was to investigate the interaction between CKD and atrial fibrillation and outcomes.

Methods: We included 12,394 subjects referred to the University Medical Center Utrecht (the Netherlands) from September 1996 to February 2018 for an out-patient visit (Utrecht Cardiovascular Cohort Second Manifestation of Arterial disease cohort). Hazard ratios (HRs) with 95% confidence intervals (CIs) for bleeding, ischemic stroke or mortality were calculated with Cox proportional hazard analyses. Presence of interaction between AF and CKD was examined by calculating the relative excess risk due to interaction (RERI), the attributable proportion (AP) due to interaction and the synergy index (S).

Results: Of the 12,394 patients, 699 patients had AF, 2,752 patients had CKD and 325 patients had both AF and CKD. Patients with both CKD and AF had a 3.0-fold (95% CI 2.0-4.4) increased risk for bleeding, a 4.2-fold (95% CI 3.0-6.0) increased ischemic stroke risk and a 2.2-fold (95% CI 1.9-2.6) increased mortality risk after adjustment as compared with subjects without atrial fibrillation and CKD. We did not find interaction between AF and CKD for bleeding and mortality. However, we found interaction between AF and CKD for ischemic stroke risk (RERI 1.88 (95% CI 0.31-3.46), AP 0.45 (95% CI 0.17-0.72) and S 2.40 (95% CI 1.08-5.32)).

Conclusion: AF and CKD are both associated with bleeding, ischemic stroke and mortality. There is a positive interaction between AF and CKD for ischemic stroke risk, but not for bleeding or mortality.

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Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Fig 1
Fig 1. Study outline.
Fig 2
Fig 2. Kaplan-Meier survival curve for ten year mortality.
See this image and copyright information in PMC

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