Table 1

Definition of study groups

Group
Target Time for Surgery
Anginal Symptoms, Coronary Anatomy, and Left Ventricular Function

Semi-urgent
Within 6 weeks
Patients with either persistent unstable angina or stable angina and extensive CAD* (left-main stenosis more than 50 percent, triple-vessel disease, or double-vessel disease with significant proximal left anterior descending stenosis and impaired left ventricular function)



Non-urgent
Within 12 weeks
Stable symptomatic patients with limited CAD (double-vessel disease with no lesion in the proximal left anterior descending artery and normal left ventricular function or single-vessel disease with significant stenosis of the proximal left anterior descending artery)

*CAD = coronary artery disease.

Target Time = Recommended time

Sobolev et al. Journal of Cardiothoracic Surgery 2008 3:47   doi:10.1186/1749-8090-3-47