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Atrial fibrillation in patients undergoing coronary artery surgery is associated with adverse outcome
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Cardiology.
Örebro Univ, Sch Med & Hlth, Dept Cardiothorac & Vasc Surg, Örebro, Sweden.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Cardiology.ORCID iD: 0000-0002-5795-0061
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center.
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2019 (English)In: Upsala Journal of Medical Sciences, ISSN 0300-9734, E-ISSN 2000-1967, Vol. 124, no 1, p. 70-77Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: The aim was to determine the association between atrial fibrillation (AF) and outcome in patients undergoing coronary artery bypass grafting (CABG).

METHODS: All patients undergoing CABG between January 2010 and June 2013 were identified in the Swedish Heart Surgery Registry. Outcomes studied were all-cause mortality, cardiovascular mortality, myocardial infarction, congestive heart failure, ischemic stroke, and recurrent AF. Patients with history of AF prior to surgery (preoperative AF) and patients without history of AF but with AF episodes post-surgery (postoperative AF) were compared to patients with no AF using adjusted Cox regression models.

RESULTS: Among 9,107 identified patients, 8.1% (n = 737) had preoperative AF, and 25.1% (n = 2,290) had postoperative AF. Median follow-up was 2.2 years. Compared to no AF, preoperative AF was associated with higher risk of all-cause mortality, adjusted hazard ratio with 95% confidence interval (HR) 1.76 (1.33-2.33); cardiovascular mortality, HR 2.43 (1.68-3.50); and congestive heart failure, HR 2.21 (1.72-2.84). Postoperative AF was associated with risk of all-cause mortality, HR 1.27 (1.01-1.60); cardiovascular mortality, HR 1.52 (1.10-2.11); congestive heart failure, HR 1.47 (1.18-1.83); and recurrent AF, HR 4.38 (2.46-7.78). No significant association was observed between pre- or postoperative AF and risk for myocardial infarction and ischemic stroke.

CONCLUSIONS: Approximately 1 in 3 patients undergoing CABG had pre- or postoperative AF. Patients with pre- or postoperative AF were at higher risk of all-cause mortality, cardiovascular mortality, and congestive heart failure, but not of myocardial infarction or ischemic stroke. Postoperative AF was associated with higher risk of recurrent AF.

Place, publisher, year, edition, pages
2019. Vol. 124, no 1, p. 70-77
Keywords [en]
Atrial fibrillation, cardiovascular disease, coronary artery bypass grafting
National Category
Cardiac and Cardiovascular Systems
Identifiers
URN: urn:nbn:se:uu:diva-374222DOI: 10.1080/03009734.2018.1504148ISI: 000461811100015PubMedID: 30265179OAI: oai:DiVA.org:uu-374222DiVA, id: diva2:1280404
Funder
Swedish Foundation for Strategic Research , KF10-0024Available from: 2019-01-18 Created: 2019-01-18 Last updated: 2019-04-10Bibliographically approved

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