Predictive value of conventional computed tomography in determining proximal extent of XXXX and possibility of infrarenal clamping.

@entity1 @entity439 @entity1028
The present study aimed to evaluate the diagnostic reliability of computed tomography in determining the proximal extent of @entity1028 and the possibility of infrarenal clamping. Preoperative computed tomographic findings, together with the operative data for 95 @entity1 , were retrospectively analyzed in light of the operative findings. Eighty-nine (93.68%) of the @entity1 were @entity1 and 6 (6.32%) were @entity1 , with a mean age of 66.27 +/- 18.14 years. Diagnosis of infrarenal @entity439 by computed tomography was confirmed at the time of surgery in 91 (95.79%) of 95 @entity1 . The negative-predictive value of computed tomography in detecting supra-aneurysmal renal arteries was found to be 95.79%. The specificity was 98.91%. Infrarenal cross-clamping was performed in 59 (62.11%) of 95 @entity1 , whose aortic segments between the renal artery orifices and the proximal borders of the @entity439 had a mean length of 26.4 +/- 7.11 mm by computed tomography Suprarenal clamping was required in 36 (37.89%) of the 95 @entity1 , whose aortic segments had a mean length of 12.7 +/- 3.48 mm. We conclude that conventional computed tomography is reasonably accurate in determining the proximal extent of @entity1028 . Although there is a high rate of error in determining the possibility of infrarenal clamping when no specific measurements are taken, infrarenal clamping can be planned when measurement by computed tomography shows a length of > or = 26 mm between the renal arteries and the proximal extent of the @entity439 . In @entity1 with shorter aortic segments, suprarenal aortic clamping should be considered.
