Brown CH, et al. - Researchers investigated whether patients with delirium vs without delirium would experience greater cognitive decline at 1 month and 1 year after cardiac surgery. Eligible patients were those who had coronary artery bypass and/or valve surgery with cardiopulmonary bypass. In these subjects, delirium was evaluated with the Confusion Assessment Method. Findings demonstrated a greater decline in a composite measure of cognition and in visuoconstruction and processing speed domains at 1 month in patients who had delirium. Except for the processing speed, the observed differences in cognitive change by delirium were not significant at 1 year.