We retrospectively evaluated the outcome after elective aortic arch surgery with circulatory arrest to determine the impact of different brain protection strategies on neurological outcome and early and late survival.
A total of 925 patients were included. The patients were assigned to 2 groups based on the type of cerebral protection strategy used during circulatory arrest [hypothermic circulatory arrest (HCA) n = 224; antegrade selective cerebral perfusion (ASCP) n = 701]. The propensity score matching (1:1; 210 vs 210 patients) approach was used to minimize selection bias and to obtain comparable groups.
The overall in-hospital mortality and permanent focal neurological deficit rates were 5.6% (n = 52) and 5.4% (n = 50) and were significantly lower in patients who received ASCP (4.4% and 3.4%, respectively) as compared to those who underwent HCA (9.4% and 11.6%, respectively) (P = 0.005 and P < 0.001). The propensity-matched analysis showed significantly lower rates of in-hospital mortality [3.8% vs 9.5% (HCA)] and permanent focal neurological deficit in ASCP group [2.9% vs 11.9% (HCA)]. Multivariable logistic regression analysis revealed left ventricular ejection fraction <30%, age >70 years, coronary artery disease, circulatory arrest time >40 min and mitral valve disease as independent predictors of in-hospital mortality. The use of ASCP was protective for early survival. Cox regression analysis revealed that long-term mortality was independently predicted by age, left ventricular ejection fraction <30%, total arch replacement, prior cardiac surgery, PVD, chronic obstructive pulmonary disease and previous stroke, whereas ASCP was protective for late survival.
Elective aortic arch surgery is associated with acceptable early and late outcomes. The ASCP is associated with a significant reduction in-hospital mortality and occurrence of permanent neurological deficits.
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