Failure of aneurysm sac shrinkage after endovascular repair; the effect of mural calcification.
Clin Radiol
; 60(12): 1290-4, 2005 Dec.
Article
em En
| MEDLINE
| ID: mdl-16291310
ABSTRACT
AIM:
To evaluate the effect of abdominal aortic aneurysm wall calcification on subsequent sac shrinkage after endovascular repair. MATERIALS ANDMETHODS:
Seventy-three patients underwent endovascular aneurysm repair. The degree of sac wall calcification on pre-procedural computed tomography (CT) examination was graded from 1 to 4 according to the degree of circumferential involvement. On follow-up CT imaging, the maximum transverse diameter (MTD) of the sac was recorded, as well as the presence or absence of endoleak. In those patients with a non-shrinking aneurysm, but no CT evidence of endoleak, contrast-enhanced ultrasound (USS) was performed. Any patient with an endoleak, however diagnosed, was excluded from the study. Kruskal-Wallis and Spearman's rank correlation coefficient testing was applied to compare the degree of calcification and change in MTD.RESULTS:
Sixty-three pre-procedural CT images were available for calcification grading. Six of this group had endoleaks resulting in 57 sets of data being available for the study. A reduction in MTD occurred in 68.25% of these patients by 1 year post-procedure. Our figures show aortic calcification is inversely associated with MTD reduction at 6 months (p = 0.01), 1 year (p = 0.05) and 2 years (p = 0.05).CONCLUSION:
This study indicates that the degree of aortic wall calcification is significant in predicting MTD reduction post-endovascular repair. The possible mechanisms and implications of this are discussed.
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Base de dados:
MEDLINE
Assunto principal:
Calcinose
/
Aneurisma da Aorta Abdominal
/
Implante de Prótese Vascular
Idioma:
En
Ano de publicação:
2005
Tipo de documento:
Article