Table 1.

Maximal atherosclerotic lumen diameter reduction and number of main arteries with severe (≥ 70%) stenosis

Source	Acute myocardial infarct		Sudden death unexpected		Non cardiac atherosclerotic Patients	Accidental death in normal people
	1st	chronic	1st	chronic
Cases	145	55	133	75	100	97
% Lumen reduction
0	3	-	10	-	7	8
<50	3	1	18	-	10	20
50–69	10	-	18	5	17	31
70–79	30	8	21	8	11	19
80–89	45	11	39	14	24	13
≥ 90	54	35	27	48	31	6
No. arteries ≥ 70%
1	61	16	40	13	26	22
2	49	22	34	26	18	13
> 3	19	16	13	31	22	3

1^st episode, in apparently normal people without extensive monofocal myocardial fibrosis Chronic, in subjects with history of coronary heart disease and/or extensive myofibrosis.