Figure 14: Distribution and Priority Criteria for Coronary Revascularisation

Degree of coronary artery obstruction % Original Weights Regression Weights
No CAD 50% and over 0 0 0
1 VD 50 - 74% 1 6 7
less than 1 VD 50 - 74% 0 7 8
1 VD (75%) 1 7 8
1 VD ( 95% and over) 1 10 13
2 VD (50 - 94%) 4 11 14
2 VD (both 95% and over) 2 13 14
1 VD, 95% and over proximal 2 14 17
2 VD, 95% and over LAD 1 14 17
2 VD, 95% and over proximal LAD 5 17 17
3 VD 4 17 17
3 VD, 95% and over in at least 1 15 19 17
3 VD, 75% proximal LAD 31 20 17
3 VD, 95% and over proximal LAD 14 22 25
Left main (50%) 6 23 35
Left main (75%) 13 25 29
Left main (95% and over) 1 30 33
Ability to work, give care to dependent/s or live independently % Original Weights Regression Weights
Immediately threatened 36 8 14
Threatened but not immediately 25 4 5
Not threatened but more difficult 38 2 1
Severe Angina % Original Weights Regression Weights
Class I 3 1 1
Class II 24 2 2
Class III 33 10 7
Class IV-A 11 12 20
Class IV-B 11 16 25
Class IV-C 18 20 27
Exercise Stress test % Original Weights Regression Weights
Very positive 41 20 20
Positive 30 10 11
(???) 17 5 7
Negative 10 0 0
Degree of risk % Original Weights Regression Weights
Low (less than 3%)
10
Medium (3-6%)
5
High (over 6%)
0
Ejection Fraction % Original Weights Regression Weights
under 20%
0
20-35%
10
35-50%
8
over 50%
6