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ABC Stroke Risk Score for Patient with Atrial Fibrillation

Purpose: To evaluate a patient with atrial fibrillation using the ABC Stroke Risk Score of Jijazi et al.

Description

Hijazi et al reported the ABC (age, biomarkers, clinical history) stroke risk score for patients with atrial fibrillation. This can help to identify a pateint who may benefit from more aggressive management. The authors are from Uppsala University, Duke University, Bristol-Myers Squibb, Boston University, Auckland City Hospital and University of Auckland.


Patient selection: atrial fibrillation

 

Outcome: 3-year risk of stroke or systemic embolization

 

Parameters:

(1) history of stroke or TIA

(2) age in years, from 44 to 90 years

(3) serum troponin I in ng/L (cobas e601, Roche Diagnostics)

(4) blood NT-proBNP (ng/L) (cobas e601, Roche Diagnostics)

 

History of Stroke/TIA

Points

no

0

yes

5.5

 

points for age in years =

= (0.06856 * (age)) - 3.031

 

points for serum troponin I =

= (2.5262 * LOG10(troponin)) + 0.01209

 

points for NT-proBNP =

= (4.207 * LOG10(NT-proBNP)) - 5.859

 

total score =

= SUM(points for all 4 parameters)

 

Interpretation:

• minimum score: 0

• maximum score: 24.3

• The higher the score the greater the risk of stroke or systemic embolization.

 

Total Score

3-Year Risk of Stroke or Systemic Embolization

< 4.5

< 1%

4.5 to 15

(0.02677 * ((score)^2)) - (0.1415 * (score)) + 1.096

15 to 28

(0.1227 * ((score)^2)) - (3.378 * (score)) + 28.15

 


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Specialty

Objective

ICD-10