ORIGINAL ARTICLES  VASCULAR SECTION 

The Journal of Cardiovascular Surgery 2011 June;52(3):371- 80

Copyright © 2011 EDIZIONI MINERVA MEDICA

language: English

Chronic infrarenal aortic occlusion: predictors of surgical outcome in patients undergoing aortobifemoral bypass reconstruction

García-Fernández F. ¹, Marchena Gómez J. ², Cabrera Morán V. ¹, Hermida M. ¹, Sotgiu E. ¹, Volo Pérez G. ¹ ✉

¹ Department of Vascular Surgery, University Hospital Dr. Negrín, Las Palmas de Gran Canaria, Canary Island, Spain; ² Department of General Surgery, University Hospital Dr. Negrín, Las Palmas de Gran Canaria, Canary Island, Spain

Aim. Chronic infrarenal aortic occlusion is relatively infrequent. Aortobifemoral bypass has been the traditional treatment. The aim of this study is to evaluate the prognostic factors related to long-term survival and patency rates of chronic infrarenal aortic occlusion after aortobifemoral bypass.
Methods. From January 1984 to December 2004, we performed consecutively 278 aortobifemoral for aortoiliac occlusive disease. Of these, 67 (24%) patients, 62 men (92.5%), presented with ischemia due to aortic occlusion. The log-Rank test was used to determine predictors of long-term survival and graft patency in a univariate analysis. With a model of proportional-hazards Cox regression the independent prognostic factors of long-term survival were determined.
Results. The postoperative mortality was 8.9%. The estimated cumulative long-term survival for aortic occlusion patients was 56% and 38% at 10 and 20 years, respectively. The estimated cumulative primary patency was 79% at 10 years and 40% at 20 years. The 20-year limb survival rate was 86%. There was no statistical difference in long-term survival and graft patency between TASCIC-D and IRAO. Previous coronary disease (P=0.008) and postoperative complications (P=0.017) significantly decreased the survival of patients. Both variables retained significance on multivariable analysis. The presence of chronic renal failure significantly decreased the patency of the aortobifemoral bypass (P=0.013).
Conclusion. Aortobifemoral bypass for chronic infrarenal aortic occlusion has an excellent primary patency rate with reasonable morbi-mortality. The presence of concomitant coronary disease and postoperative complications are prognostic factors of long-term survival.