Rehospitalization and the Association of Postoperative Delirium With Cognitive Decline in Older Adults

This study aimed to determine whether the cognitive decline associated with postoperative delirium in older adults is mediated by illness and frailty, as indicated by recurrent hospitalizations. The findings revealed that while delirium was linked to greater cognitive decline and increased rehospitalization rates, rehospitalization did not significantly mediate the relationship between delirium and long-term cognitive decline. The authors suggest that further research is necessary to explore the underlying mechanisms connecting delirium to cognitive deterioration.