pump head
n.— «From thirty to fifty per cent of patients will experience a syndrome Cohn calls “pump head,” in which they suffer significant cognitive deficits: memory loss, inability to concentrate, difficulties in recognizing patterns, and an inability to perform basic calculations. » —“Heart Surgery, Unplugged: Coronary Bypass Without Stopping the Heart” by Jerome Groopman New Yorker Jan. 11, 1999. (source: Double-Tongued Dictionary)
Further reading
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