Uphaus et al reported a score to help identify atrial fibrillation in a patient who has had a stroke. The authors are from Johannes Gutenberg University (Mainz), University of Gottingen, University Hospital Leipzig, Darmstadt University of Applies Sciences and the University of Birmingham.
AS5F = Age and Stroke Severity NIHSS > 5 to Find AF
Detection of atrial fibrillation: Holter ECG monitoring for >= 72 hours
Patient selection: adult with cerebrovascular event
Parameters:
(1) age in years
(2) NIHSS
Parameter
Finding
Points
age in years
0.76 * (age)
cerebrovascular event
TIA
0
stroke with NIHSS <= 5
9
stroke with NIHSS > 5
21
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: around 30 (age-dependent)
• maximum score: around 100 (age-dependent)
value of X =
= (0.09272 * (score)) - 9.187
probability of paroxysmal atrial fibrillation =
= 1 / (1 + EXP((-1) * X))
Performance:
• The area under the ROC curve is 0.75.
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