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Surgical treatment of left main and left main equivalent coronary artery disease
Insights
Left main (LM) and left main equivalent (LME) coronary artery disease have different surgical risks. LM disease had higher operative mortality, while LME disease showed lower graft patency and symptom relief.
Area of Science:
- Cardiology
- Cardiac Surgery
- Vascular Medicine
Background:
- Left main (LM) and left main equivalent (LME) coronary artery disease are often considered similar regarding surgical outcomes.
- A clear distinction between LM and LME disease is crucial for accurate risk stratification and treatment planning.
Purpose of the Study:
- To compare the operative mortality rates and long-term benefits of surgical intervention for LM disease versus LME disease.
- To determine if LM and LME coronary artery disease can be equated in terms of surgical risk and benefit.
Main Methods:
- Retrospective comparison of 87 patients with LM disease and 78 patients with LME disease.
- Analysis of operative mortality, graft patency, symptom relief, and late mortality.
- 100% patient follow-up was achieved for long-term outcome assessment.
Main Results:
- The LM disease group exhibited a significantly higher operative mortality rate (12.6%) compared to the LME disease group (2.5%).
- Graft patency and symptom relief were notably lower in the LME disease cohort.
- Late mortality rates were comparable between the two groups at 4%.
Conclusions:
- Left main equivalent disease represents a distinct subgroup, often associated with three-vessel disease, and should not be equated with left main disease.
- Surgical risk and long-term benefits differ significantly between LM and LME coronary artery disease, necessitating tailored treatment strategies.
Abstract:
There is a tendency to equate left main (LM) and left main equivalent (LME) coronary artery disease in terms of the surgical risk and benefit. Eighty-seven patients with LM disease were compared to 78 patients with LME disease as to operative mortality rate and long-term benefits. One hundred percent follow-up was obtained. Although the two groups were similar preoperatively with regard to age, sex, and ventricular function, the operative results in the two groups differed. There was a significantly higher operative mortality rate in the LM group of patients (12.6% versus 2.5%). However, the incidence of graft patency and relief of symptoms was lower in the LME group of patients. The late mortality rate was 4% in both groups. LME disease appears to represent a subgroup of patients with three-vessel disease and cannot be equated with LM disease.