A comparison of anesthetic quality in propofol-spinal anesthesia and propofol-fentanyl anesthesia for total knee arthroplasty in elderly patients.

STUDY OBJECTIVE

To compare propofol plus spinal anesthesia during spontaneous ventilation using the Laryngeal Mask Airway and propofol plus fentanyl anesthesia during mechanical ventilation with an endotracheal tube on quality of recovery after anesthesia.

DESIGN

Prospective, randomized study.

SETTING

Hirosaki National Hospital.

PATIENTS

150 patients (aged > 70 years) undergoing total knee arthroplasty.

INTERVENTIONS

Patients were divided randomly into two groups, to receive spontaneous ventilation with a Laryngeal Mask Airway during propofol-spinal anesthesia, or to receive propofol-fentanyl anesthesia with mechanical ventilation via endotracheal tube.

MEASUREMENTS

Quality of anesthesia recovery such as nausea, vomiting, headache, pain throat, hoarse voice, back pain, dizziness, feeling comfortable, dreaming, recovery times in recovery of anesthesia, recovery times, postoperative pain, confusion, was assessed.

MAIN RESULTS

The frequency of postoperative pain throat, hoarse voice, and nausea was significantly lower in the propofol-spinal anesthesia group than the propofol-fentanyl anesthesia group. The time to extubation, emergence, response to commands, and orientation were significantly faster (p < 0.001) in the propofol-spinal anesthesia group than the propofol-fentanyl anesthesia group. The frequency of postoperative confusion occurring in the propofol-spinal anesthesia group during the first 24 hours was significantly lower than that of the propofol-fentanyl anesthesia group (p = 0.03).

CONCLUSIONS

Propofol-spinal anesthesia provided better and faster recovery than did propofol-fentanyl anesthesia for elderly patients undergoing total knee arthroplasty.