From the degree of involvement of cardiac arteries by arteriosclerosis on angiography, it is possible to give an assessment of a patient's 5 year survival chances.
Arterial segments studied:
(1) left anterior descending artery
(2) major anterolateral (diagonal) branch of the LAD
(3) first major septal perforator
(4) left circumflex artery
(5) the major circumflex marginal branch
(6) posterior descending artery of the right coronary artery.
Patients with main LCA stenosis are excluded.
Each segment with a luminal reduction >= 75% is assigned 2 points
(1) maximum score is 12 points
(2) If the patient has a left dominant coronary arterial system (the posterior descending artery arises from a branch the left circumflex artery), no points are assigned to the PDA.
Each vessel distal to a 75+% reduction is also assigned a score of 2 points:
(1) if LAD prior to origin of septal perforator and diagonal: score 6
(2) if LAD after origin of septal perforator but before diagonal: score 4
(3) if circumflex artery prior to the origin of the marginal branch: score 4 points
Number of diseased vessels:
• involvement of left anterior descending, left circumflex and right coronary arteries.
5 year survival based on number of diseased vessels and the jeopardy score
1 vessel disease
2 vessel disease
3 vessel disease
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