Abstract
Background We hypothesized that hypothermic circulatory arrest (HCA) can be performed with a
low operative risk and does not add to the morbidity in elective procedures.
Methods A total of 178 patients with a mean (± SD) age of 62 (± 10) years underwent HCA for
elective aortic surgery from April 2008 to September 2011. Pre- and postoperative
clinical data were collected prospectively.
Results Hemiarch replacement was performed in 97% patients. Mean logistic Euroscore I was
17% (± 15). HCA was performed at 26°C bilateral tympanic temperature. Mean HCA duration
was 17 (±) min. Mean cross-clamp time was 106 (± 39) min. Overall 30-day mortality
was 2% and stroke occurred in 4% of patients. Overall 6-month survival was 96%. Cox
regression analysis for 6-month survival revealed four variables with significant
influence: the logistic Euroscore I (p = 0.008), age (p = 0.04), cross-clamp time (p = 0.008), and reoperation for bleeding complications (p = 0.04).
Conclusions HCA with open distal anastomosis for elective aortic repair can be performed with
low operative mortality, even in the elderly, and seems not to add to the morbidity
of the procedure.
Keywords
aneurysm - aorta - aortic - outcomes
