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  • Title: Hemodynamic influence of peripheral vascular occlusive disease on abdominal aortic aneurysms.
    Author: Hoshina K, Miyata T, Hatakeyama T, Shigematsu H, Nagawa H.
    Journal: Int Angiol; 2004 Dec; 23(4):373-8. PubMed ID: 15767983.
    Abstract:
    AIM: Clinical evidence indicates that hemodynamic conditions such as peripheral vascular occlusive disease (PVOD) influence abdominal aortic aneurysm (AAA) disease. METHODS: We retrospectively analyzed 406 operated cases of AAA at our institute over the last 15 years, and compared 39 patients with PVOD to those without, to examine hemodynamic effects and risk factors. Aneurysm size at operation, rupture, shape, expansion rate and several preoperative risk factors were compared. RESULTS: Mean aortic diameter in the AAA with PVOD patients (56.8+/-17.8 mm) showed no significant difference to that in the AAA without PVOD group (60.4+/-14.8 mm). However, the subgroup of AAA with PVOD in whom the aneurysm was found prior to PVOD diagnosis (67.8+/-18.1 mm) (n=19) showed a larger mean AAA diameter compared to the AAA (not followed up until operative indication/prior to operation) without PVOD group (60.4+/-14.8 mm), (n=340), (p=0.04). Smoking was the only preoperative risk factor to show a difference between AAA patients with and without PVOD. The aneurysm expansion rate was determined retrospectively in 13 patients with PVOD who had been followed for at least 1 year by CT scan and 17 patients without PVOD. The rate in the PVOD group was 8.1 mm/year, which was significantly faster than that in PVOD-free patients (4.6 mm/year), (p=0.03). CONCLUSIONS: The findings of a large diameter and fast expansion rate in AAA patients with concomitant PVOD suggest that the hemodynamic effects of PVOD have a great influence on AAA development.
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