Efficacy and safety of lidocaine versus sufentanil in patient-controlled intravenous analgesia after laparoscopic colorectal cancer surgery: a prospective, randomized, double-blind clinical trial.

Notably, patients in the lidocaine group had, on average, approximately 1,000 RMB (Renminbi, the official Chinese currency) lower total hospitalization costs (including all expenses from admission to discharge) compared to those in the sufentanil group, indicating potential economic benefits, although this difference did not reach statistical significance.

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