Research Article

Positive Preemptive Analgesia Effectiveness of Pregabalin Combined with Celecoxib in Total Knee Arthroplasty: A Prospective Controlled Randomized Study

Table 4

Incidence of postoperative complications.

Placebo (n = 36)Celecoxib alone (n = 38)Pregabalin alone (n = 38)Combination (n = 37)χ2 value

PONV8 (22.2%)6 (15.8%)5 (13.1%)0 (0.00%)8.4830.034
Sedation score > 20 (0.00%)0 (0.00%)2 (5.26%)2 (5.41%)3.3280.332
Dizziness1 (2.78%)1 (2.63%)1 (2.63%)2 (5.41%)5.7450.654
Urinary retention1 (2.78%)1 (5.26%)4 (10.53%)3 (8.11%)1.2160.876
Deep vein thrombosis1 (2.78%)1 (2.63%)2 (5.26%)0 (0.00%)2.0500.752
Gastrointestinal hemorrhage0 (0.00%)0 (0.00%)0 (0.00%)0 (0.00%)

Sedation was scored as 0 = no sedation; 1 = intermittent drowsiness; 2 = patient drowsy but arousable to verbal stimulus; and 3 = impossible to arouse verbally. PONV: postoperative nausea and vomiting; the difference was significant at the level.