Background: The purpose of this experiment was to investigate the effect of PMA protocol (pericapsular nerve group (PENG), oxycodone and parecoxib) postoperative pain in direct anterior approach total hip arthroplasty (DAA-THA) patients with consistent preoperative pain thresholds .
Objectives:To explore effective preemptive multimodal analgesic protocols to meet the needs of enhanced recovery after surgery (ERAS) in joint surgery.
Study Design:This study was a prospective, single-center, randomized, double-blind trial with four groups.
Setting:In the Changzhou Second People's Hospital a single institution.
Methods: We recruited 160 patients with consistent preoperative pain thresholds to enter the final study analysis, and according to the criteria were randomly divided into four groups: the placebo group (n = 38), parecoxib group (n = 39), oxycodone group (n = 43), and combination group (n = 40). According to the corresponding PMA protocol, all groups were given advanced analgesic drugs at 30 min before surgery and PENG after 30 min. The main result of the pain VAS scores at rest and during exercise, and secondary results postoperative inflammation index( erythrocyte sedimentation rate and C-reactive protein ), 5-hydroxytryptamine(5-HT) ,postoperative rescue opioids medicine (total volume and time), first walking time, postoperative adverse effects, postoperative delirium occur and length of stay (LOS) after DAA-THA .
Results: The postoperative VAS scores in the combined group were significantly lower than those in the other three groups. The VAS scores between during exercise and at rest were significant differences in the four groups Within 48 hours after surgery (P < 0.05). The combination group had the lowest cumulative opioids dose and the first rescue analgesic is longer within 48 hours after surgery (P < 0.05). The inflammation indexes and 5-HT changes within 48 hours after surgery, the first walking time and the postoperative LOS of the combination group had significantly improved compared with the other three groups (P < 0.05). The postoperative adverse effects were no significantly difference in the four groups within postoperative 48 hours.
Conclusions: The PMA regimen of oxycodone associate with parecoxib and assist PENG was effectively improved perioperative pain (acute), reduced the cumulative dose of postoperative opioids and promoted patient recovery after DAA-THA.