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Indication for early aorto-coronary bypass surgery after successful intracoronary lysis
Insights
Intracoronary lysis (ICL) successfully opened blocked arteries in most patients with acute coronary artery thrombosis. Early surgery after ICL improved survival rates, especially when the heart muscle remained viable.
Area of Science:
- Cardiology
- Interventional Cardiology
- Cardiovascular Research
Background:
- Acute coronary artery thrombosis is a life-threatening condition requiring rapid reperfusion.
- Intracoronary lysis (ICL) is a potential treatment strategy for restoring blood flow.
- Assessing myocardial viability is crucial for guiding treatment decisions in acute coronary syndromes.
Purpose of the Study:
- To evaluate the efficacy and outcomes of intracoronary lysis (ICL) in patients with acute coronary artery thrombosis.
- To compare the mortality rates associated with different treatment strategies following ICL.
- To determine the role of myocardial viability assessment in guiding early surgical intervention.
Main Methods:
- 108 patients with acute coronary artery thrombosis underwent intracoronary lysis (ICL).
- Recanalization success rates were recorded.
- Patients were subsequently managed medically or with early aorto-coronary bypass (ACB) surgery.
- Mortality was analyzed based on ICL response and subsequent treatment.
- Left ventricular (LV) angiography, ECG, and intracoronary Thallium-scintigraphy were used to assess myocardial viability.
Main Results:
- Successful recanalization was achieved in 79 out of 108 patients (73%).
- Mortality rates were 20% for unresponsive patients, 12% for medically treated successful lysis patients, and 3.3% for early surgery patients after successful lysis.
- Early aorto-coronary bypass (ACB) surgery following successful ICL was associated with the lowest mortality.
- Intracoronary Thallium-scintigraphy proved valuable in assessing myocardial viability.
Conclusions:
- Intracoronary lysis (ICL) is an effective treatment for acute coronary artery thrombosis, achieving high recanalization rates.
- Early aorto-coronary bypass (ACB) surgery after successful ICL significantly reduces mortality.
- Myocardial viability assessment, particularly using intracoronary Thallium-scintigraphy, is essential for selecting appropriate patients for early surgery.
Abstract:
Intracoronary lysis (ICL) was carried out in 108 patients with acute coronary artery thrombosis. In 79 subjects, recanalization of the occluded vessel was achieved, while 29 patients were unresponsive to the method. Thirty patients required early aorto-coronary bypass (ACB) surgery after successful ICL, while 49 patients with successful lysis were treated medically as well as the 29 patients with unsuccessful lysis. Mortality was 20% among the patients unresponsive to ICL, 12% among the 49 patients with successful lysis treated on a medical regimen thereafter, and 3.3% among the 30 patients undergoing early surgery after successful lysis. Early aorto-coronary surgery, however, was felt to be indicated only when the myocardium supplied by the occluded vessel was still viable. Beside LV angiography and ECG studies, intracoronary Thallium-scintigraphy was most helpful in assessing the viability of the heart muscle.