Research Article
A Pathological Study of the Epidemiology of Atherosclerosis in Mexico City
Table 2
Prevalence of atherosclerotic lesions by arterial territory and severity (AHA pathological classification) according to age groups.
| | Arterial territory and atherosclerosis grade | 1–14 y | Age groups 15–34 y | 35–59 y | ≥60 y |
| | Intracranial (%) | | | | | | None | 17 (70.8) | 34 (52.3) | 16 (37.2) | 5 (10.6) | | Grades I-II | 1 (4.2) | 0 | 0 | 0 | | Grade III | 5 (20.8) | 26 (40.0) | 20 (46.5) | 15 (31.9) | | Grades IV-V | 1 (4.2) | 5 (7.7) | 7 (16.3) | 27 (57.4) | | Stenosis* | 0 | 2 (3.0) | 4 (9.3) | 22 (46.8) |
| | Carotid (%) | | | | | | None | 16 (57.1) | 8 (12.1) | 1 (2.3) | 0 | | Grades I-II | 6 (21.4) | 14 (21.2) | 1 (2.3) | 0 | | Grade III | 6 (21.4) | 38 (57.6) | 24 (54.5) | 14 (29.8) | | Grades IV-V | 0 | 6 (9.1) | 18 (40.9) | 33 (70.2) | | Stenosis* | 0 | 0 | 7 (15.9) | 14 (29.8) |
| | Coronary (%) | | | | | | None | 6 (21.4) | 0 | 0 | 0 | | Grades I-II | 2 (7.1) | 1 (1.6) | 0 | 0 | | Grade III | 12 (42.9) | 21 (33.3) | 4 (9.3) | 2 (4.3) | | Grades IV-V | 8 (28.6) | 41 (65.1) | 39 (90.7) | 44 (95.7) | | Stenosis* | 1 (3.6) | 24 (38.1) | 23 (53.5) | 41 (89.1) |
| | Renal (%) | | | | | | None | 22 (81.5) | 24 (39.3) | 5 (12.5) | 0 | | Grades I-II | 0 | 1 (1.6) | 1 (2.5) | 0 | | Grade III | 5 (18.5) | 29 (47.5) | 22 (55) | 10 (22.2) | | Grades IV-V | 0 | 7 (11.5) | 12 (30.0) | 35 (77.8) | | Stenosis* | 0 | 2 (3.3) | 6 (15.0) | 21 (46.7) |
| | Aorta (%) | | | | | | None | 6 (21.4) | 0 | 0 | 0 | | Types I-II | 3 (10.7) | 14 (22.2) | 4 (10.0) | 0 | | Grade III | 1 (3.6) | 5 (7.9) | 25 (62.5) | 43 (93.5) | | Types IV-V | 0 | 6 (9%) | 18 (41%) | 33 (70%) | | Stenosis* | 0 | 0 | 0 | 5 (10.9) |
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All arterial stenosis are >25% of lumen reduction and correspond to subjects with plaques types IV-V.
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