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Role of the CHADS2 score in acute coronary syndromes: risk of subsequent death or stroke in patients with and without atrial fibrillation.
University of Borås, School of Health Science.
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2012 (English)In: Chest, ISSN 0012-3692, E-ISSN 1931-3543, Vol. 141, no 6, 1431-1440 p.Article in journal (Refereed) Published
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Abstract [en]

Background: Atrial fibrillation (AF) is common in patients with acute coronary syndromes (ACS). We aimed to describe the value of the CHADS2 (congestive heart failure, hypertension, age ≥ 75 years, diabetes, prior stroke or transient ischemic attack) score as a risk assessment tool for mortality and stroke in patients with ACS, irrespective of the presence or absence of AF. Methods: Consecutive patients with ACS admitted to the coronary care unit were prospectively included in a risk stratification study. We calculated the CHADS2 scores from the data collected at admission, and all patients were followed until January 1, 2007, or death. Results: Of 2,335 patients with ACS in this study, 442 (age 71 ± 8 years, 142 women) had AF. Their mean CHADS2 score was 1.6 ± 1.4 vs 1.0 ± 1.1 in patients without AF (P < .0001). The all-cause mortality at 10 years was strongly associated with the CHADS2 score in patients with AF (hazard ratio [HR] and 95% CI per unit increase in the six-grade CHADS2 score, 1.21 [1.07-1.36]; P = .002), but the same association was also present in patients without AF (HR 1.38 [1.28-1.48], P < .0001), after adjustment for potential confounders. The more complicated GRACE (Global Registry of Acute Coronary Events) risk score provided a better prediction for short- and long-term mortality than the simpler CHADS2 score (P < .0001). Hospitalization for stroke was significantly associated with the CHADS2 score in patients without AF (but not in those with AF) after adjustment (HR 1.46 [1.27-1.68], P < .0001). Conclusions: In patients with ACS, AF is associated with poor prognosis. The CHADS2 score developed for AF has even greater prognostic value in patients who do not have AF, and it may help to identify patients with high risk for subsequent stroke or death and a need for optimization of risk-reducing treatment.

Place, publisher, year, edition, pages
American College of Chest Physicians , 2012. Vol. 141, no 6, 1431-1440 p.
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Medical and Health Sciences
Research subject
Integrated Caring Science
Identifiers
URN: urn:nbn:se:hb:diva-1438DOI: 10.1378/chest.11-0435Local ID: 2320/11790OAI: oai:DiVA.org:hb-1438DiVA: diva2:869495
Available from: 2015-11-13 Created: 2015-11-13 Last updated: 2016-11-23Bibliographically approved

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CiteExportLink to record
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