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  • Title: Female and elderly abdominal aortic aneurysm patients more commonly have concurrent thoracic aortic aneurysm.
    Author: Hultgren R, Larsson E, Wahlgren CM, Swedenborg J.
    Journal: Ann Vasc Surg; 2012 Oct; 26(7):918-23. PubMed ID: 22944566.
    Abstract:
    BACKGROUND: A recent report unexpectedly revealed that one-fourth of abdominal aortic aneurysm (AAA) patients also have an aneurysm in the thoracic aorta (TAA). It remains to be investigated which AAA patients have a higher risk of also developing TAAs. The aim of this study was to identify possible differences in the risk factor profile in AAA patients with or without a TAA. METHODS: All AAA patients attending an outpatient clinic and investigated using an abdominal and thoracic computed tomography scan were included (n = 354). Image analysis and hospital chart review were conducted. The association between comorbidity and TAA was estimated by logistic regression and odds ratios (ORs) with 95% confidence intervals (CIs). Gender-specific and neutral criteria were used. Validation of excluded patients was performed. RESULTS: Ninety-four (27%) of 354 AAA patients had a concurrent descending TAA (AAA/TAA). AAA/TAA patients were older than AAA patients (76 vs. 73 years). More women were identified in the AAA/TAA group (39% vs. 16%, P < 0.001). In the univariate logistic regression model, female gender (OR: 3.3, 95% CI: 1.9-5.6), hypertension (OR: 1.8, 95% CI: 1.1-3.0), and age (70-79 years-OR: 2.4, 95% CI: 1.3-4.6; 80-89 years-OR: 3.0, 95% CI: 1.5-6.0) were associated with concurrent TAA. In the multivariate model, only female gender and age were associated with TAA. CONCLUSIONS: AAA patients, in general, should be offered examination of the thoracic aorta, and special attention needs to be paid to female AAA patients and AAA patients at high age, if the AAA patient is considered operable. Surveillance of AAA patients must improve to enhance identification of the large group of patients who have developed, or will develop, TAAs. Future strategies will, of course, address pathophysiological aspects of aneurysmal development in the thoracic and infrarenal aorta.
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