[Is patient-controlled sedation good for elderly patients?]

Area of Science:

• Anesthesiology
• Geriatric Medicine
• Surgical Sedation

Background:

• Elderly patients undergoing surgery require careful sedation management.
• Epidural anesthesia is commonly used for knee arthroplasty.
• Patient-controlled sedation (PCS) offers potential advantages in sedation delivery.

Purpose of the Study:

• To evaluate the safety and efficacy of intra-operative patient-controlled sedation (PCS) with propofol in elderly patients.
• To compare propofol PCS with anesthesiologist-controlled sedation (ACS) during knee arthroplasty under epidural anesthesia.

Main Methods:

• A randomized study comparing propofol PCS (n=6) and ACS (n=5) in elderly patients undergoing knee arthroplasty under epidural anesthesia.
• Sedation levels, vital signs, blood gas analysis, and plasma propofol levels were monitored.
• Patient and surgeon satisfaction surveys were conducted.

Main Results:

• Patients in the PCS group received a lower mean dose of propofol (1.9 mg.kg-1) compared to the ACS group (2.9 mg.kg-1).
• Procedure duration was similar in both groups (PCS: 147 min, ACS: 142 min).
• Patient and surgeon satisfaction and complication incidence were similar between the PCS and ACS groups.

Conclusions:

• Intra-operative patient-controlled sedation (PCS) with propofol is a safe and effective sedation technique for elderly patients undergoing knee arthroplasty with epidural anesthesia.
• PCS provides comparable sedation quality to anesthesiologist-controlled sedation (ACS) in this patient population.
• PCS may allow for reduced propofol administration while maintaining satisfactory sedation and outcomes.