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[Thrombolysis in acute myocardial infarct. An improved long-term prognosis following balloon dilatation]
Insights
Adding balloon dilation to thrombolytic therapy for acute myocardial infarction significantly improves reperfusion rates and long-term survival. This combined approach enhances patient outcomes compared to thrombolysis alone.
Area of Science:
- Cardiology
- Interventional Cardiology
- Acute Myocardial Infarction Treatment
Background:
- Acute transmural myocardial infarction requires prompt and effective treatment to restore coronary blood flow.
- Thrombolytic therapy is a cornerstone in managing myocardial infarction, but its efficacy can be limited by residual stenosis.
- Percutaneous coronary intervention, including balloon dilation, is often considered when thrombolysis alone is insufficient.
Purpose of the Study:
- To evaluate the impact of additional balloon dilation on reperfusion success in patients with acute transmural myocardial infarction.
- To compare the three-year actuarial survival rates between patients treated with thrombolysis alone versus thrombolysis plus balloon dilation.
Main Methods:
- A cohort of 217 patients with acute transmural myocardial infarction received either systemic and intracoronary thrombolysis alone (141 patients) or thrombolysis with additional balloon dilation (76 patients).
- Balloon dilation was indicated for unsuccessful thrombolysis or significant residual stenosis (>50%) post-thrombolysis.
- Patient demographics and coronary artery disease severity were comparable between the groups.
Main Results:
- Complete reperfusion was achieved in 88% of patients treated with thrombolysis and balloon dilation, compared to 63% in the thrombolysis-only group (P < 0.0003).
- Three-year actuarial survival was significantly higher in the group receiving combined therapy (90%) versus thrombolysis alone (70%) (P < 0.02).
- No significant differences in baseline characteristics, including age, sex, infarct location, or vessel disease, were observed between the treatment groups.
Conclusions:
- Adjunctive balloon dilation during thrombolytic treatment for acute transmural myocardial infarction significantly enhances reperfusion rates.
- The addition of balloon dilation to thrombolytic therapy improves long-term patient prognosis and survival.
- Combined thrombolysis and balloon dilation represent a superior therapeutic strategy for selected patients with acute myocardial infarction.
Unlabelled:
A systemic and intracoronary thrombolytic treatment was carried out in 217 patients with acute transmural myocardial infarction between March 1980 and March 1985. 141 patients were only treated with thrombolysis, and 76 were additionally treated by balloon dilation in the same session. Indications for additional balloon dilation were unsuccessful thrombolysis as well as a residual stenosis of more than 50% after primarily successful thrombolysis. Age, sex, proportion of patients with anterior and posterior wall infarction as well as with 1, 2 and 3-vessel disease did not significantly differ in the two groups. The result of therapy (complete reperfusion) was less after thrombolysis than after thrombolysis with balloon dilation (63% as compared to 88%, P less than 0.0003). The patients who were only treated with thrombolysis had a more unfavorable three-year actuarial survival than those in whom thrombolysis and balloon dilation were carried out (70% as compared to 90%, P less than 0.02).
Conclusion:
additional balloon dilation in thrombolytic treatment of acute transmural myocardial infarction improves the long-term prognosis.