Low-dose esketamine for postoperative pain, sleep, and hemodynamic stability in functional endoscopic sinus surgery: a retrospective cohort study
Objective To evaluate the efficacy and safety of low-dose esketamine (0.2 mg/kg or 0.3 mg/kg) in improving postoperative pain, sleep quality, hemodynamic stability, and emotional status in functional endoscopic sinus surgery (FESS) patients. Methods This retrospective cohort study analysed 135 chronic rhinosinusitis pa...