How is the prognosis of left main coronary artery stenosis determined?
The prognosis of left main coronary artery stenosis can be determined through angiographic severity, aortocoronary bypass surgery, and the correlation of myocardial hypoperfusion with prognosis. Angiographic severity is determined through the evaluation of coronary narrowing, which is used as a surrogate marker for the extent of coronary atherosclerosis (Nakagomi et al., 1996). Aortocoronary bypass surgery is used to assess the influence of left main coronary artery stenosis on survival (Campeau et al., 1978; Caracciolo et al., 1995). Additionally, myocardial hypoperfusion has been found to predict prognosis in patients with coronary artery disease (Ladenheim et al., 1986; Marwick et al., 1997; Morrow et al., 1993).  