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Computed tomography-detected abnormalities following conventional abdominal aortic aneurysm (AAA) repair
G Libertiny1, M Gibson, E Torrie
1Department of Surgery, Royal Berkshire Hospital, Reading, UK. gabor.libertiny@surgery.oxford.ac.uk
Purpose:
To determine how time since the operation influences vascular abnormalities following conventional infrarenal abdominal aortic aneurysm (AAA) repair.
Methods:
In 47 patients computed tomography was performed 1 to 12 years following the aneurysm repair. Aortic diameters at different levels were measured and other abnormalities recorded.
Results:
Significant correlation was found between time since operation and diameter of the suprarenal aorta (R=0.51, P<0.001) but not with aortic neck diameter (R=-0.10, P=0.48) or diameter of the prosthetic graft (R=0.07, P=0.66). However, measured diameters of graft and aortic neck showed a significant positive correlation (R=0.40, P=0.005).
Conclusions:
Dilatation of the suprarenal aorta has a different pattern from aortic neck dilatation. The latter showed correlation with the diameter of the prosthetic graft. This may be of interest for future design of endovascular stent-grafts.