Key result
Exercise QRS scores differed between CAD patients and controls, but values overlapped too widely to provide diagnostic cutoff points.
Why the study?
Does the Athens QRS score improve diagnostic accuracy for coronary artery disease?
Case-Control (n=99)
Does the Athens QRS score improve diagnostic accuracy for coronary artery disease?
The exercise-induced Athens QRS score does not provide additive diagnostic value for detecting coronary artery disease due to wide overlap between patients and healthy controls.
Answers are grounded in this paper and cite their sources.
Athens QRS score should not guide CAD diagnosis; leaves open whether refined thresholds add value in prospective studies.
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Chung et al. (1999) conducted a case-control in Coronary Artery Disease (n=99). Exercise-induced QRS score (Athens QRS score) vs. Controls with negative exercise test and MIBI scan was evaluated on △(R-Q-S)V5+△(R-Q-S)aVF (p=0.017). Exercise QRS scores differed between CAD patients and controls, but values overlapped too widely to provide diagnostic cutoff points.
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