Abstract:Objective To investigate the application of remimazolam in obese patients undergoing laparoscopic cholecystectomy.Methods This study included 120 obese patients who underwent laparoscopic cholecystectomy at Tongchuan People's Hospital from September 2021 to February 2024. Patients were randomly assigned using a drawing method: odd-numbered patients to control group (n = 60) received propofol for anesthesia induction; even-numbered patients to observation group (n = 60) received remimazolam. The two groups were compared for anesthesia recovery outcomes, hemodynamic parameters at different time points [before induction of anesthesia (T0), immediately after intubation (T1), immediately after pneumoperitoneum (T2), immediately after extubation (T3)] [mean arterial pressure (MAP), heart rate (HR) ], oxidative stress indicators before surgery and on postoperative day 1 [superoxide dismutase (SOD), malondialdehyde (MDA), glutathione peroxidase (GSH-Px) ], cognitive function [Mini-Mental State Examination (MMSE) ], and incidence of adverse reactions.Results There were statistically significant differences between the two groups in awakening time, extubation time, and post-anesthesia care unit (PACU) stay, with shorter durations in the observation group (P < 0.05, t-test). Repeated measures ANOVA revealed that MAP and HR levels at T0, T1, T2, and T3 showed significant differences across time points (P < 0.05), between groups (P < 0.05), and in interaction trends (P < 0.05). The observation group maintained higher MAP and HR levels, indicating more stable hemodynamics. The changes in SOD, GSH-Px, and MDA levels from preoperative to postoperative day 1 were significantly smaller in the observation group (P < 0.05). Similarly, the change in MMSE score was smaller in the observation group, indicating better cognitive preservation. The total incidence of adverse reactions was significantly lower in the observation group compared to the control group (P < 0.05).Conclusion Remimazolam effectively shortens awakening time and PACU stay, improves oxidative stress indicators and cognitive function, and has a lower incidence of adverse reactions in obese patients undergoing laparoscopic cholecystectomy.