Group CON (n = 30) Group KET (n = 30)
P value
Patients with NRS scores > 3, n (%) 5 (16.7) 0 (0) 0.052
Patients receiving rescue analgesia, n (%)
In the PACU 0 (0) 0 (0) 1.000
In the ward 1 (3.3) 0 (0) 1.000
Time to extubation, min 8.3 (4.2) 10.3 (4.3) 0.084
RASS scores at 30 min postoperatively 0 (0, 0) 0 (0, 0) 1.000
PONV, n (%)
Nausea 1 (3.3) 4 (13.3) 0.350
Vomiting 2 (6.7) 3 (10.0) 1.000
Psychotomimetic side effects, n (%)
Dizziness 9 (30.0) 8 (26.7) 0.774
Diplopia 0 (0) 1 (3.3) 1.000
Hallucinations 0 (0) 0 (0) 1.000
Nightmares 0 (0) 0 (0) 1.000
Quality of sleep
Preoperative 1 (1, 2) 2 (1, 4) 0.083
Postoperative 3 (1, 4) 2 (1, 2) 0.043*
Pa 0.004 0.347
Pain scores in 3 months postoperatively 0 (0, 2) 0 (0, 1) 0.518