@entity2334 : preoperative and intraoperative factors determining immediate and long-term results of operations in 605 XXXX .

@entity1 @entity8 @entity101 @entity66 @entity1030 @entity16 @entity177 @entity2334 @entity439 @entity397 @entity299 @entity432 @entity731 @entity204 @entity1580
Graft inclusion and vessel reattachment to openings made in the graft were employed in the treatment of 605 @entity1 with @entity2334 . These @entity1 were divided into four groups on the basis of the extent of @entity439 . Group I consisted of those @entity1 with involvement of most of the descending thoracic and upper abdominal aorta; group II involved most of the descending thoracic aorta and most or all of the abdominal aorta; group III involved the distal descending thoracic aorta and varying segments of abdominal aorta; and group IV involved most or all of the abdominal aorta including the segment from which the visceral vessels arose. The cause of @entity439 formation was medial degenerative disease in 80%, and dissection in 17%; other causes were responsible in the remaining 3%. The median age was 65 years and associated diseases including @entity439 involving other segments, @entity731 , @entity299 , @entity1030 ( @entity1030 ), @entity101 , and @entity177 were frequent. The @entity439 was symptomatic in 70% of cases and @entity397 had occurred in 4% of cases. There were 54 (8.9%) early (30-day) deaths and 151 late deaths; 400 (66%) @entity1 were still alive 3 months to 20 years after operation, including 60% at 5 years. Statistically significant pre- and intraoperative variables by univariate analysis that were predictive of increased risk of @entity204 were advancing age, associated diseases that included @entity432 , @entity731 , @entity177 , and long aortic clamp time. Three of these (age, clamp time, and the presence of @entity1030 ) retained significance by multivariate analysis. Variables predictive of risk of late death were age, dissection, extent of @entity439 , @entity397 , @entity299 , @entity66 , @entity1030 , @entity101 , and poor renal function. Age, @entity397 , @entity8 , extent of @entity439 , and dissection retained their significance by multivariate analysis. Variables predictive of @entity16 of the lower extremities included @entity397 , reattachment of intercostal and lumbar arteries, clamp time, dissection, extent and age. @entity397 , reattachment of vessels, dissection, and extent of @entity439 retained significance by multivariate analysis. Thus, the risk of this complication was greatest in @entity1 with extensive lesions (group II) with @entity1580 . The greatest risk of @entity177 after operation that required dialysis was in @entity1 who had @entity8 before operation. Methods employed did not prevent these complications.
