Significance of a Fragmented QRS Complex Versus a Q Wave in Patients With Coronary Artery Disease | Zendy

Mithilesh K. Das | Zendy; Bilal Khan | Zendy; Sony Jacob | Zendy; Awaneesh Kumar | Zendy; Jo Mahenthiran | Zendy

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Significance of a Fragmented QRS Complex Versus a Q Wave in Patients With Coronary Artery Disease

Author(s) -

Mithilesh K. Das,

Bilal Khan,

Sony Jacob,

Awaneesh Kumar,

Jo Mahenthiran

Publication year - 2006

Publication title -

circulation

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 7.795

H-Index - 607

eISSN - 1524-4539

pISSN - 0009-7322

DOI - 10.1161/circulationaha.105.595892

Subject(s) - medicine , cardiology , qrs complex , coronary artery disease , left bundle branch block , u wave , myocardial infarction , single photon emission computed tomography , electrocardiography , notching , heart failure , materials science , metallurgy

Q waves on a 12-lead ECG are markers of a prior myocardial infarction (MI). However, they may regress or even disappear over time, and there is no specific ECG sign of a non-Q-wave MI. Fragmented QRS complexes (fQRSs), which include various RSR' patterns, without a typical bundle-branch block are markers of altered ventricular depolarization owing to a prior myocardial scar. We postulated that the presence of an fQRS might improve the ability to detect a prior MI compared with Q waves alone by ECG.

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