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Left main intervention revisited: early and late outcome of PTCA and stenting
Insights
Left main coronary artery (LMCA) angioplasty is a viable option for patients unsuitable for bypass surgery. However, this intervention is not recommended during acute myocardial infarction or cardiogenic shock.
Area of Science:
- Cardiology
- Interventional Cardiology
Background:
- Coronary artery bypass graft (CABG) surgery is the traditional treatment for left main coronary artery (LMCA) disease.
- Patients with prohibitive surgical risks often have limited treatment options.
Purpose of the Study:
- To evaluate the safety and efficacy of LMCA angioplasty in patients deemed unsuitable for CABG.
- To assess outcomes in elective versus acute LMCA interventions.
Main Methods:
- Retrospective review of 28 consecutive patients undergoing LMCA angioplasty.
- Analysis of procedural success, complications, and long-term outcomes.
- Comparison of outcomes based on protected/unprotected LMCA circulation and elective/acute settings.
Main Results:
- High procedural success rate for elective LMCA angioplasty in high-risk patients.
- Overall mortality was 32.1%, with all early deaths occurring in patients with cardiogenic shock and unprotected circulation.
- Repeat angioplasty (21.4%) and subsequent CABG (10.7%) were noted, but elective procedures showed favorable results.
Conclusions:
- Elective LMCA angioplasty and stenting can be a successful alternative for patients with high surgical risk.
- Intervention in acute myocardial infarction or cardiogenic shock with unprotected LMCA circulation is associated with poor outcomes and should be avoided.
Abstract:
We reviewed our experience with 28 unselected, consecutive patients undergoing left main coronary artery (LMCA) angioplasty who had been considered unsuitable for coronary artery bypass graft surgery (CABG). Fourteen patients (50%) had a protected LMCA circulation. Balloon angioplasty was performed in 11 patients (39.3%), and stents were implanted in 17 patients (60.7%). The procedure was elective in 22 patients (78.6%) and acute in the setting of myocardial infarction/cardiogenic shock in 6 (21.4%). The mean follow-up duration was 15.9 +/- 12 months. There were 5 early (before hospital discharge) and 4 late deaths (total 32.1%), 1 myocardial infarction (3.6%), 6 repeat angioplasties (21.4%), and 3 subsequent CABG (10.7%). All 5 early deaths occurred in patients with cardiogenic shock and unprotected circulation. The results of our study suggest that when patients have prohibitive surgical risks, elective LMCA angioplasty and/or stenting may be undertaken with a high procedural success rate. However, our data do not support intervention in the presence of acute myocardial infarction/cardiogenic shock.