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Titolo:
Thrombus distribution and changes in aneurysm size following endovascular aortic aneurysm repair
Autore:
Armon, MP; Yusuf, SW; Whitaker, SC; Gregson, RHS; Wenham, PW; Hopkinson, BR;
Indirizzi:
UnivdNottingham Hosp, Dept Vasc & Endovasc Surg, Nottingham NG7 2UH, Englan Univ Nottingham Hosp Nottingham England NG7 2UH ttingham NG7 2UH, Englan
Titolo Testata:
EUROPEAN JOURNAL OF VASCULAR AND ENDOVASCULAR SURGERY
fascicolo: 6, volume: 16, anno: 1998,
pagine: 472 - 476
SICI:
1078-5884(199812)16:6<472:TDACIA>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
MANAGEMENT;
Keywords:
abdominal aortic aneurysm; complications; endovascular surgery; endoleak; thrombus distribution;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
7
Recensione:
Indirizzi per estratti:
Indirizzo: Armon, MP 2 Denison St, Nottingham NG9 1AY, England 2 Denison St Nottingham England NG9 1AY ngham NG9 1AY, England
Citazione:
M.P. Armon et al., "Thrombus distribution and changes in aneurysm size following endovascular aortic aneurysm repair", EUR J VAS E, 16(6), 1998, pp. 472-476

Abstract

Objectives: to determine (a) changes in aneurysm size following endovascular repair, (b) the significance of collateral lumbar artery blood flow and (c) the relationship between thrombus distribution within the aneurysm sac and the development of a "lumbar endoleak". Materials and Methods: 72 patients treated with endovascular stent-grafts were followed up with spiral computed tomography for a median of 11 (range 3-27) months. The cross-sectional area of the aneurysm was measured at the point of maximum diameter pre- and post-operatively. The distribution and quantity of thrombus was recorded pre-operatively and this was related to changes in aneurysm size and the development of lumbar endoleaks post-operatively. Results: an increase in aneurysm size occurred in 22 patients, of whom 10 had endoleaks. Fifteen aneurysms did not change in size, including four with endoleak, and 35 aneurysms decreased in size with no endoleaks. There tons a significant difference between the endoleak and no endoleak groups (Chi-squared test = 17.1 with 2 degrees of freedom (d.f.), p<0.001). Nine endoleaks were from patent lumbar arteries. No patients with thick circumferential or posteriorly placed thrombus developed an endoleak arising from lumbarvessels (0/23 cases) compared to those with minimal or anteriorly placed thrombus (9/49 cases) (Chi-squared test with Yate's correction = 3.17 with 1d.f., p<0.1). Conclusions: aneurysms do not decrease in size in the presence of a lumbarendoleak, and some expand significantly. A number of aneurysms increase insize despite no evidence of an endoleak on computed tomography (CT). Patterns of thrombus distribution may be able to predict patients at risk from persistent endoleak via lumbar vessels.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/11/20 alle ore 08:16:08