Abstract
Thrombolytic therapy has been found to improve the prognosis of selected patients with acute myocardial infarction. Many investigators advocate that combined emergency coronary angiography and percutaneous transluminal coronary angioplasty be performed immediately after thrombolytic therapy. Emergency angiography documents the anatomic extent of coronary artery disease, shows whether reperfusion has occurred, and indicates whether emergency angioplasty is necessary. In this setting, emergency catheterization without angioplasty is associated with relatively little additional risk. However, a number of prospective trials have compared emergency angioplasty to more conservative treatment strategies, and emergency angioplasty has been not found to offer any advantage in terms of improved prognosis or preservation of left ventricular function. Therefore, it is probable that most patients with evolving Q-wave myocardial infarction are best treated with conservative strategies after initial thrombolytic therapy, although there may still be a role for emergency angioplasty in a relatively small subset who present with evolving myocardial infarction and severely depressed left ventricular function.
Emergency coronary artery bypass surgery also appears to have a limited role in patients treated with thrombolytic therapy. Nevertheless, in occasional patients with a poor prognosis at hospital presentation, in whom thrombolytic therapy and emergency angioplasty have failed or are contraindicated, prompt emergency coronary artery bypass grafting may salvage the ischemic myocardium and improve the prognosis. (Texas Heart Institute Journal 1990;17:165-72)
Keywords: Angiography
Keywords: angioplasty, transluminal
Keywords: clinical trials
Keywords: combined modality therapy
Keywords: coronary circulation
Keywords: fibrinolytic agents
Keywords: myocardial infarction
Keywords: plasminogen activator, tissue type
Keywords: streptokinase
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Selected References
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