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Deep Hypothermic Circulatory Arrest Effectively Preserves Neurocognitive Function
The efficacy of deep hypothermic circulatory arrest (DHCA) on preserving neurocognitive function is uncertain. This study compared 29 pts undergoing aortic surgery with DHCA to 33 who did not require DHCA. Cognitive scores preop and postop were similar for both groups. A similar number of pts (11 vs 13) experienced neurocognitive deficits postoperatively, including a decline in types of memory function. Time under DHCA was not associated with the incidence of neurocognitive deficits. Overall, cardiac surgery caused some problems with memory. DHCA, when required, preserved neurocognitive function.