Non-Q-wave infarction: diagnosis, prognosis, and treatment.
The patient with a non-Q-wave myocardial infarction should be considered as having an uncompleted myocardial infarction. The ultimate prognosis in this patient depends upon the amount of viable myocardium still at risk. These patients have a higher incidence of reinfarction than those who had a Q-wave infarction. There is evidence that diltiazem after a non-Q-wave infarction can prevent early reinfarction. It is evident that those patients who continue to have myocardial ischemia, manifested by continued angina, ischemia, ST depression, or thallium 201 perfusion defects on exercise, especially if they already have reduced ventricular function, are at the greatest risk. These are the patients who should be considered for angiography and revascularization.
Cheitlin
M D
MD
University of California, San Francisco, School of Medicine.
D004562:Electrocardiography; D005500:Follow-Up Studies; D006801:Humans; D009203:Myocardial Infarction / Q000175:diagnosis / Q000401:mortality / Q000628:therapy; D009206:Myocardium / Q000473:pathology; D011379:Prognosis; D012307:Risk Factors; D013997:Time Factors