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Rescue PTCA Following Failed Thrombolysis and Primary PTCA: A Retrospective Study of Angiographic and Clinical
1Department of Cardiology, Academic Hospital Maastricht, University of Limburg, Maastricht, the Netherlands.
Insights
Rescue percutaneous transluminal coronary angioplasty (PTCA) after failed thrombolysis offers comparable outcomes to primary PTCA in acute myocardial infarction (AMI) patients. Successful PTCA is crucial for improving long-term prognosis in AMI treatment.
Area of Science:
- Cardiology
- Interventional Cardiology
- Acute Myocardial Infarction Research
Background:
- A patent culprit artery is increasingly recognized as vital for improving prognosis in acute myocardial infarction (AMI) patients.
- Primary percutaneous transluminal coronary angioplasty (PTCA) demonstrates superior efficacy compared to thrombolytic therapy alone in AMI management.
Purpose of the Study:
- To evaluate the effectiveness of rescue PTCA following unsuccessful thrombolytic treatment in AMI patients.
- To compare angiographic and clinical outcomes of rescue PTCA versus primary PTCA.
Main Methods:
- Retrospective analysis of 176 consecutive AMI patients with TIMI 0 or 1 perfusion grade.
- Patients were divided into two groups: rescue PTCA after failed thrombolysis (100 patients) and primary PTCA (76 patients).
- Analysis of angiographic data, in-hospital, and 1-year clinical outcomes.
Main Results:
- Angiographic success rates were identical: 86.0% for rescue PTCA and 85.5% for primary PTCA (TIMI 3 flow, residual stenosis <50%).
- In-hospital and 1-year clinical outcomes, including mortality and reinfarction rates, were comparable between the two groups.
- Failed PTCA was a significant predictor of poor 1-year outcome (28.0% mortality vs. 4.6% for successful PTCA).
Conclusions:
- Rescue PTCA after failed thrombolysis yields comparable angiographic and clinical outcomes to primary PTCA in selected AMI patients.
- The findings support the efficacy of rescue PTCA in this patient subset, suggesting a favorable prognosis.
- Successful reperfusion, whether primary or rescue PTCA, is paramount for improving patient outcomes in acute myocardial infarction.
Abstract:
Evidence is increasing that a patent culprit artery improves the prognosis of patients with acute myocardial infarction (AMI). Primary percutaneous transluminal coronary angioplasty (PTCA) has shown to be more effective than thrombolytic therapy alone. How effective is rescue PTCA after failed thrombolytic treatment? In a retrospective analysis, 176 consecutive patients with AMI and TIMI 0 or 1 perfusion grade were included. Patients had either rescue PTCA after failed thrombolysis (100 patients) or primary PTCA (76 patients). Angiographic data and in-hospital and 1-year outcome were analyzed. Comparison of baseline data of the two groups showed a higher proportion of long-standing angina and use of nitrates and aspirin in the primary PTCA group. Also, the delay between the onset of pain and PTCA was not significantly different, with a mean of 222 minutes for rescue PTCA and 245 minutes for primary PTCA (p = 0.52). The angiographic outcomes in the rescue PTCA group and the primary PTCA group were identical: The intervention was successful (TIMI 3 flow and residual stenosis <50%) in 86.0% and 85.5%, respectively. Complication rates of the procedure were also similar, except for bleeding complications. Blood transfusion was only needed after rescue PTCA in 3.0% versus 0.0% in primary PTCA patients. Clinical outcomes during hospital stay in terms of death rate (4.0% and 6.6%), reinfarction (6.0% and 3.9%), recurrent angina (16.0% and 11.8%), and repeat interventions were comparable, as was the first-year outcome. Failed PTCA was the most important predictor of a poor 1-year outcome; 28.0% died after failed PTCA versus 4.6% after successful PTCA (p < 0.001). In this retrospective analysis of 176 AMI patients, angiographic and clinical outcome, including a 1-year follow-up in patients who had rescue PTCA after failed thrombolysis, were of the same magnitude of patients in whom primary PTCA was performed. These findings suggest that in this subset the outcome of patients with rescue PTCA because of failed thrombolysis is good and is comparable with patients who underwent primary PTCA.