Key result
Guidelines for studying mental changes after open-heart surgery recommend unoperated controls and intraindividual score changes.
Why the study?
Methodological approaches to studying changes in mental functions after various forms of anaesthesia and operations, including open-heart surgery, require development and clarification.
This methodological paper outlines recommended approaches, including the use of unoperated controls and nonparametric statistics, for studying cognitive changes following open-heart surgery.
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Clinicians should view prior cognitive outcome data after cardiac surgery with caution; leaves open whether these methods will standardize future research.
Gruvstad et al. (1976) studied Changes in mental functions after open-heart operations. Open-heart operations and anaesthesia vs. Unoperated control patients was evaluated on Changes in mental functions. Methodological recommendations for studying mental function changes after open-heart operations include using unoperated controls, intraindividual score changes, and nonparametric statistics.
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