title: Q waves--does depth matter?
abstract: Deep narrow Q waves in an electrocardiogram may be significant and should suggest several possible diagnoses. By considering the leads where they are observed, the presence of additional ECG abnormalities, the applicant's age and any relevant clinical information, one can considerably narrow the diagnostic possibilities.
authors: Ross MacKenzie Consulting, 2261 Constance Drive, Oakville, Ontario, L6J 5L8, Canada. rossmackenzieconsulting@msn.com
authors: Ross
authors: R
authors: MacKenzie
mesh_terms: D000293:Adolescent; D002312:Cardiomyopathy, Hypertrophic / Q000175:diagnosis; D003937:Diagnosis, Differential; D004562:Electrocardiography; D006801:Humans; D008297:Male; D020388:Muscular Dystrophy, Duchenne / Q000175:diagnosis* / Q000503:physiopathology*; D009203:Myocardial Infarction / Q000175:diagnosis