“…PCA pumps provide good analgesic effects that alleviate postoperative acute pain; however, they may cause adverse reactions, including respiratory depression, nausea and vomiting, sleepiness, cutaneous pruritus and hepatic dysfunction. 9,10 The results of the present study demonstrated that, compared with a control group, NRS scores in PCA patients gradually decreased over time, confirming the evident analgesic effects of PCA pumps. However, the incidence of postoperative adverse reactions, including nausea and vomiting, cutaneous pruritus, respiratory depression, sleepiness and hepatic dysfunction were significantly higher in PCA patients compared with the control group, indicating the potential risks of using a PCA pump as postoperative analgesic.…”