eTAAA has low peri-operative mortality, but SCI incidence is high albeit that it decreased with increasing experience. More extensive repair and use of larger volumes of contrast were associated with higher risk of SCI. Acute repair does not significantly increase SCI risk. A standardized protocol for early diagnosis and treatment of SCI leads to a higher recovery rate with a greater likelihood of regaining ambulatory capacity.

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Progressive decrease in cerebral tissue oxygenation independent of mean-arterial pressure may precede spontaneous vasovagal reflex during tilt. Patients experience syncope when SctO2 falls below 60%. These data confirm clinical utility of absolute cerebral oximetry monitoring for syncope investigation. We applied NIRS to measure frontal cerebral tissue oxygen saturation (SctO2) during head-up tilt test (HUT) in patients with unexplained syncope. In 44 of 54 patients, HUT was diagnostic. In patients with syncope, a significant SctO2-decrease was observed. Different patterns of SctO2 can be detected.