Efficacy of recombinant tissue-type plasminogen activator thrombolysis and primary coronary stenting after acute myocardial infarction

OBJECTIVE: To compare the efficacy of low dose recombinant tissue-type plasminogen activator (rt-PA) thrombolysis with primary coronary stenting after acute myocardial infarction. METHODS: Of 261 patients with first acute myocardial infarction, 131 were given low dose rt-PA intravenous thrombolysis, and 130 primary coronary stenting. RESULTS: The age, time from onset of chest pain to hospital presentation and infarct location between these two groups were comparable. The patency rate of the infarct-related artery (IRA) in patients in the thrombolysis group was significantly lower than that of patients in the primary stenting group (P < 0.001). Recurrent myocardial infarction, and selective coronary stenting of patients with thrombolytic therapy were higher than that of patients in the primary stenting group (7.6% vs 1.5%, P < 0.05; 20.6% vs 0, P < 0.001, respectively). Left ventricular ejection fraction (LVEF) in patients in the thrombolysis group was lower than that of the stent group (55.6% +/- 13.4% vs 65.8% +/- 9.2%, P < 0.001). Total hospitalization time of the thrombolysis group was longer than that of the stent group (16 +/- 7 d vs 11 +/- 4 d, P < 0.001). Mortality in the thrombolysis group was higher than that of the stent group, but this difference was not significant (6.1% vs 3.1%, P > 0.05). CONCLUSION: Comparing with low dose rt-PA thrombolytic therapy after acute myocardial infarction, primary coronary stenting has a higher patency rate of the IRA, better cardiac function and shorter hospitalization time.