| Temporal changes of aortic neck morphology in abdominal aortic aneurysms. | |
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MedLine Citation:
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PMID: 20223622 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVES: This study characterized temporal changes in the infrarenal aortic aneurysm neck in patients with small, untreated abdominal aortic aneurysms (AAA). METHODS: Patients with infrarenal AAA who had contrast-enhanced computed tomography (CT) scans separated by >6 months were identified and their images reviewed. Infrarenal neck diameter and length were measured along with aneurysm diameter. Comparisons between the interval CT scans were made and analysis of factors affecting neck changes performed. RESULTS: Sixty patients met inclusion criteria with an imaging interval of 3.8 years (median, 3.4 years; range, 0.75-9.6 years). During the interval, there was an increase in proximal and distal neck diameters of 1.1 mm (SD, 2.2) (0.28 mm/y) and 1.0 mm (SD, 3.0) (0.26 mm/y), respectively. During the same interval, the neck length decreased by 4 mm (SD, 11) (1 mm/y). A neck length of <15 mm was present in 10 patients (17%) at the initial imaging. Four of the remaining 50 patients experienced an interval decrease in neck length to <15 mm, all of whom had initial lengths of 15 to 20 mm. Medications had no association with changes in neck morphology; however, diabetes correlated with a slower rate of neck shortening (P = .001). CONCLUSION: The natural history of the aneurysm neck is one of expansion and shortening that will not affect most patients under surveillance. Patients with marginal neck lengths (range, 15-20 mm) at the initial imaging are more likely to experience loss of neck length that may negatively affect endovascular suitability. |
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Authors:
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Brandon W Propper; Todd E Rasmussen; W Tracey Jones; Shaun M Gifford; Gabriel E Burkhardt; W Darrin Clouse |
Publication Detail:
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Type: Comparative Study; Journal Article Date: 2010-03-11 |
Journal Detail:
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Title: Journal of vascular surgery : official publication, the Society for Vascular Surgery [and] International Society for Cardiovascular Surgery, North American Chapter Volume: 51 ISSN: 1097-6809 ISO Abbreviation: J. Vasc. Surg. Publication Date: 2010 May |
Date Detail:
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Created Date: 2010-04-27 Completed Date: 2010-05-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8407742 Medline TA: J Vasc Surg Country: United States |
Other Details:
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Languages: eng Pagination: 1111-5 Citation Subset: IM |
Copyright Information:
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Published by Mosby, Inc. |
Affiliation:
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San Antonio Military Vascular Surgery Service, Wilford Hall United States Air Force Medical Center, San Antonio, Tex, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aortic Aneurysm, Abdominal
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pathology*,
physiopathology,
radiography* Chronic Disease Cohort Studies Contrast Media / diagnostic use Disease Progression Female Follow-Up Studies Humans Male Monitoring, Physiologic / methods* Observation Probability Radiographic Image Enhancement / methods* Renal Artery* Retrospective Studies Risk Assessment Statistics, Nonparametric Time Factors Tomography, X-Ray Computed / methods* |
| Chemical | |
Reg. No./Substance:
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0/Contrast Media |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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