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Emergency coronary artery bypass surgery after intracoronary thrombolysis for evolving myocardial infarction
Insights
Emergency coronary artery bypass surgery after streptokinase infusion for myocardial infarction showed no hospital deaths. This approach may benefit selected patients, offering a low-risk option for acute evolving myocardial infarction treatment.
Area of Science:
- Cardiology
- Cardiovascular Surgery
- Interventional Cardiology
Background:
- Acute evolving myocardial infarction requires timely reperfusion.
- Intracoronary streptokinase is a thrombolytic agent used for myocardial infarction.
- Coronary artery bypass surgery is a standard treatment for severe coronary artery disease.
Purpose of the Study:
- To evaluate the safety and efficacy of immediate coronary artery bypass surgery following intracoronary streptokinase infusion in patients with acute evolving myocardial infarction.
- To assess outcomes including mortality, morbidity, and need for further interventions.
Main Methods:
- Sixteen patients with acute evolving myocardial infarction received emergency coronary artery bypass surgery immediately after intracoronary streptokinase infusion.
- Assessment of residual stenosis, thrombolysis success, myocardial necrosis (creatine phosphokinase), chest tube drainage, and clinical outcomes.
Main Results:
- No hospital deaths occurred among the 16 patients.
- 11 patients had significant residual stenosis (70%) in the recanalized vessel; thrombolysis was unsuccessful in 5.
- All patients experienced myocardial necrosis; peak creatine phosphokinase correlated with reperfusion time. Mean chest tube drainage was 960 ml.
- No patients suffered further myocardial infarction or recurrent angina.
Conclusions:
- Immediate coronary artery bypass surgery following intracoronary streptokinase infusion is feasible and safe in selected patients with acute evolving myocardial infarction.
- This combined approach can be performed with low mortality and morbidity, potentially improving outcomes in complex cases.
Abstract:
Sixteen patients underwent emergency coronary artery bypass surgery immediately after intracoronary streptokinase infusion for acute evolving myocardial infarction. Of these, 11 patients had 70% residual stenosis in the recanalised vessel, and in five thrombolysis was unsuccessful. There were no hospital deaths. All the patients sustained myocardial necrosis, the peak activity of creatine phosphokinase correlating with the time to reperfusion. Chest tube drainage (mean 960 ml) was significantly higher than for control patients but did not correlate with the total dosage of streptokinase. No patients had further myocardial infarction or developed recurrent angina. Selected patients may benefit from coronary bypass surgery after intracoronary streptokinase infusion. If necessary this may be performed immediately with low mortality and morbidity.