Replacement of the ascending and transverse aortic arch: determinants of long-term survival

Background. Although little has been published on the natural history of aneurysms of the ascending aorta and aortic arch, long-term prognosis of untreated aneurysms is generally poor. We reviewed our 10-year experience in the repair of the ascending aorta and aortic arch to evaluate long-term outcome. Methods. Between January 1991 and May 2001, we repaired 423 aneurysms of the ascending aorta or aortic arch using profound hypothermic circulatory arrest. Median age was 65 years. Retrograde cerebral perfusion (RCP) was used in 357 cases. Mean pump and RCP times were 139 and 33.9 minutes, respectively. Survival was ascertained by direct patient contact or by searching the social security death index. Survival was analyzed by Kaplan-Meier stratified analysis and by multivariate Cox regression. Results. Overall actuarial survival was 72% at 5 years and 71% at 10 years after surgery. Univariate analysis identified increasing age (p< 0.0001), chronic obstructive pulmonary disease (p< 0.014), concurrent unoperated aneurysm (p< 0.005), arch involvement (p< 0.042), pump time (p< 0.0004), concurrent aortic valve replacement (p< 0.009), and postoperative renal failure (p< 0.0002) as factors that negatively influenced survival. Multivariate analysis identified increasing age (p< 0.0001) and pump time (p< 0.0001). RCP did not have a significant independent effect on the long-term survival. Conclusions. Our experience indicates that repair of the ascending aorta and aortic arch can be accomplished with good long-term survival.