Intraoperative Sedation and Postoperative Delirium

Prevalence of Postoperative Delirium According to the Use of Dexmedetomidine or Propofol in Elderly Patients Undergoing Orthopedic Surgery: Retrospective Study

Delirium are common after orthopedic surgery in the elderly and are directly associated with loss of independence, reduction in the quality of life and increased mortality. The cause of postoperative delirium still remains unclear and may be multifactorial. The aim of this retrospective study is to examine prevalence of postoperative delirium according to the use of dexmedetomidine or propofol in elderly patients undergoing orthopedic surgery under regional anesthesia.

Inclusion Criteria:

• Patients who underwent orthopedic surgery under regional anesthesia
• age of 65 years or greater

Exclusion Criteria:

• General anesthesia
• age < 65 years
• central nervous system disease, including dementia and Parkinson's disease
• Patients who were not received sedation with propofol or dexmedetomidine during the operation