2020 Volume 32 Issue 2 Pages 179-186
Background: After cardiac surgery, patients very often develop delirium. In particular, delirium occurs at a higher rate and tends to be prolonged in duration after surgery for thoracic aneurysm. There have been few studies of the clinical factors of this prolongation in adult patients. Objective: We aim to elucidate these factors in this study. Methods: The subjects were 49 patients who underwent surgery for thoracic aneurysm. The diagnosis of delirium was determined using the Japanese version of the Intensive Care Delirium Screening Checklist (ICDSC). Patients were divided into two groups, the prolongation group and non-prolongation group, based upon a duration of more or less than 7 days, respectively, and relevant clinical factors were compared. Results: There were significant differences between two groups in a prolonged duration of selective cerebral perfusion during surgery and the dose of benzodiazepine hypnotics before and after surgery. Conclusions: A prolonged duration of selective cerebral perfusion and the dose of benzodiazepine hypnotics may be associated with prolongation of delirium after surgery for thoracic aneurysm.
