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1.	Oldgren, Jonas, et al. (författare) Performance and Validation of a Novel Biomarker-Based Stroke Risk Score for Atrial Fibrillation 2016 Ingår i: Circulation. - 0009-7322 .- 1524-4539. ; 134:22, s. 1697-1707 Tidskriftsartikel (refereegranskat)abstract BACKGROUND: -Atrial fibrillation (AF) is associated with increased but variable risk of stroke. Our aim was to validate the recently developed biomarker-based ABC-stroke risk score and compare its performance with the CHA2DS2VASc and ATRIA risk scores.METHODS: -ABC-stroke score includes Age, Biomarkers (NT-proBNP and high-sensitivity [hs] troponin [cTn]), and Clinical history (prior stroke). This validation was based on 8,356 patients, 16,137 person-years of follow-up, and 219 adjudicated stroke or systemic embolic (SE) events in anticoagulated patients with AF in the RE-LY study. Levels of NT-proBNP, hs-cTnT, and hs-cTnI were determined in plasma samples obtained at study entry.RESULTS: -The ABC-stroke score was well calibrated with 0.76 stroke/SE events per 100 person-years in the predefined low (<1%/year) risk group, 1.48 in the medium (1-2%/year) risk group, and 2.60 in the high (>2%/year) risk group for the ABC-stroke score with hs-cTnT. Hazard ratios for stroke/SE were 1.95 for medium versus low risk, and 3.44 for high versus low risk groups. ABC-stroke score achieved C indices of 0.65 with both hs-cTnT and hs-cTnI, as compared with 0.60 for CHA2DS2VASc (p=0.004 for hs-cTnT and p=0.022 hs-cTnI) and 0.61 for ATRIA scores (p=0.005 hs-cTnT and p=0.034 for hs-cTnI).CONCLUSIONS: -The biomarker-based ABC-stroke score was well calibrated and consistently performed better than both the CHA2DS2VASc and ATRIA stroke scores. The ABC score should be considered an improved decision support tool in the care of patients with AF.

Oldgren, Jonas, et al. (författare)
Performance and Validation of a Novel Biomarker-Based Stroke Risk Score for Atrial Fibrillation
2016
Ingår i: Circulation. - 0009-7322 .- 1524-4539. ; 134:22, s. 1697-1707
Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: -Atrial fibrillation (AF) is associated with increased but variable risk of stroke. Our aim was to validate the recently developed biomarker-based ABC-stroke risk score and compare its performance with the CHA2DS2VASc and ATRIA risk scores.METHODS: -ABC-stroke score includes Age, Biomarkers (NT-proBNP and high-sensitivity [hs] troponin [cTn]), and Clinical history (prior stroke). This validation was based on 8,356 patients, 16,137 person-years of follow-up, and 219 adjudicated stroke or systemic embolic (SE) events in anticoagulated patients with AF in the RE-LY study. Levels of NT-proBNP, hs-cTnT, and hs-cTnI were determined in plasma samples obtained at study entry.RESULTS: -The ABC-stroke score was well calibrated with 0.76 stroke/SE events per 100 person-years in the predefined low (<1%/year) risk group, 1.48 in the medium (1-2%/year) risk group, and 2.60 in the high (>2%/year) risk group for the ABC-stroke score with hs-cTnT. Hazard ratios for stroke/SE were 1.95 for medium versus low risk, and 3.44 for high versus low risk groups. ABC-stroke score achieved C indices of 0.65 with both hs-cTnT and hs-cTnI, as compared with 0.60 for CHA2DS2VASc (p=0.004 for hs-cTnT and p=0.022 hs-cTnI) and 0.61 for ATRIA scores (p=0.005 hs-cTnT and p=0.034 for hs-cTnI).CONCLUSIONS: -The biomarker-based ABC-stroke score was well calibrated and consistently performed better than both the CHA2DS2VASc and ATRIA stroke scores. The ABC score should be considered an improved decision support tool in the care of patients with AF.

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