Table I.

Coronary Gensini score.

Degree of coronary stenosis	Score	Lesion location	Score
1–25%	1	Left main coronary artery	5.0
26–50%	2	Left anterior descending branch or proximal segment of circumflex branch	2.5
51–75%	4	Middle left anterior descending branch	1.5
76–90%	8	Distal segment of left anterior descending branch	1.0
91–99%	16	Left circumflex branch middle and distal segment	1.0
Full closed	32	Right coronary artery	1.0
		Small branch	0.5

Each integral lesion is scored by the degree of stenosis multiplied by the number of lesions, and each patients score is the sum of all lesions scores.