Open AccessThe influence of cognitive reserve on neuropsychological functioning following coronary artery bypass grafting (CABG)☆
Author(s) -
Susan Ropacki,
Arthur A. Bert,
Michael T. Ropacki,
M. Brooke Rogers,
Robert A. Stern
Publication year - 2006
Publication title -
archives of clinical neuropsychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.909
H-Index - 98
eISSN - 1873-5843
pISSN - 0887-6177
DOI - 10.1016/j.acn.2006.11.001
Subject(s) - neuropsychology , cognitive reserve , context (archaeology) , neuropsychological assessment , cardiology , bypass grafting , cognition , cognitive decline , executive functions , medicine , artery , psychology , cognitive impairment , dementia , disease , psychiatry , paleontology , biology
Neuropsychological impairment is common, yet variable, after coronary artery bypass grafting (CABG). Similar variability has been observed in other CNS-related diseases. Empirical findings in Alzheimer's disease and HIV, among other areas, suggest cognitive reserve (CR) may mediate the cognitive impact of these diseases. The present study examined whether CR mediates neuropsychological outcome after CABG. Participants were 42 (N=42) individuals who underwent elective, normothermic CABG. Each was placed in high (n=22) or low (n=20) CR groups based on estimated premorbid intelligence and occupational attainment. All were administered neuropsychological tests preoperatively and at discharge. The total incidence of neuropsychological decline (66.7%) was not significantly different between CR groups. However, on working memory and executive function tests, specifically, the high CR group demonstrated greater post-operative decline compared to the low CR group. These data are considered in the context of a threshold model of CR theory.
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