title: Long-Term Changes in the Distal Aorta after Aortic Arch Replacement in Acute DeBakey Type I Aortic Dissection.
abstract: BACKGROUND
  We analyzed the long-term results of ascending aortic replacement and arch aortic replacement in acute DeBakey type I aortic dissections to measure the differences in the distal aortic changes with extension of the aortic replacement.
  
  
  METHODS
  We reviewed 142 cases of acute DeBakey type I aortic dissections (1996-2015). Seventy percent of the cases were ascending aortic replacements, and 30% of the cases underwent total arch aortic replacement, which includes the aorta from the root to the beginning of the descending aorta with the 3 arch branches. Fourteen percent (20 cases) resulted in surgical mortality and 86% of cases that survived had a mean follow-up period of 6.6±4.6 years. Among these cases, 64% of the patients were followed up with computed tomography (CT) angiograms with the duration of the final CT check period of 4.9±2.9 years.
  
  
  RESULTS
  There were 15 cases of reoperation in 13 patients. Of these 15 cases, 13 cases were in the ascending aortic replacement group and 2 cases were in the total arch aortic replacement group. Late mortality occurred in 13 cases; 10 cases were in the ascending aortic replacement group and 3 cases were in the total arch aortic replacement group. Eight patients died of a distal aortic problem in the ascending aortic replacement group, and 1 patient died of distal aortic rupture in the total arch aortic replacement group. The follow-up CT angiogram showed that 69.8% of the ascending aortic replacement group and 35.7% of the total arch aortic replacement group developed distal aortic dilatation (p=0.0022).
  
  
  CONCLUSIONS
  The total arch aortic replacement procedure developed fewer distal remnant aortic problems from dilatation than the ascending aortic replacement procedure in acute type I aortic dissections.
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Dong-A University College of Medicine.
authors.forename: Kwangjo
authors.initials: K
authors.lastname: Cho
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Dong-A University College of Medicine.
authors.forename: Jeahwa
authors.initials: J
authors.lastname: Jeong
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Dong-A University College of Medicine.
authors.forename: Jongyoon
authors.initials: J
authors.lastname: Park
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Dong-A University College of Medicine.
authors.forename: Sungsil
authors.initials: S
authors.lastname: Yun
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Dong-A University College of Medicine.
authors.forename: Jongsu
authors.initials: J
authors.lastname: Woo
keywords: Aortic dissection; Complication; Recurrence; Replacement; Surgery