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The Annals of thoracic surgery · 2006

Clinical analysis of acute type A intramural hematoma: comparison between two different pathophysiological types.

Сравнительное исследованиеСтатьяНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
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Nakamura Kunihide, Onitsuka Toshio, Yano Mitsuhiro, Yano Yoshikazu, Matsuyama Masakazu, Kojima Kazushi

Аннотация

BACKGROUND: Type A intramural hematoma (IMH) has two different etiologies, which are rupture of vasa vasorum and penetrating atherosclerotic ulcer (PAU); however, it is difficult to know which is the initiating event.

METHODS: Between January 1993 and August 2004, 28 patients of acute type A IMH were treated in our department and were divided into two groups, 20 patients with IMH probably caused by rupture of vasa vasorum (non-PAU group) and 8 patients with IMH probably caused by PAU (PAU group), according to pathologic specimen and atherosclerotic findings on computed tomography. Background factors, radiographic findings, and prognosis were analyzed retrospectively.

RESULTS: Surgery was performed in 15 patients (75%) in non-PAU group and 4 patients (50%) in PAU group during the first admission. Late progression was noted in 3 patients, and operation was required. Finally, operation was performed in 22 patients (78.6%). The history of myocardial infarction (p = 0.026) and chronic renal failure (p = 0.026) were more associated with PAU group than with non-PAU group. Ascending aortic diameter at the onset was significantly larger in non-PAU group (50.3 +/- 6.6 mm) than in PAU group (43.9 +/- 9.0 mm; p = 0.046), and there were significantly more ulcer lesions in PAU group (1.9 +/- 0.4) than in non-PAU group (1.1 +/- 0.4; p = 0.0004). There was no significant difference in long-term survival rates between them.

CONCLUSIONS: The PAU group patients have more coexisting atherosclerotic diseases and multiple aortic ulcer lesions with significantly mild ascending aortic dilatation compared with non-PAU group patients.

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