Comparative Effects of Remimazolam and Propofol on Intraoperative Hypertension and Hypotension During Robot-Assisted Laparoscopic Gynecologic Surgery: A Retrospective Analysis

<i>Background and Objectives:</i> Remimazolam is a recently introduced benzodiazepine that has been increasingly adopted as an alternative to propofol. Although several trials have compared remimazolam with propofol, these studies have primarily focused on induction-related hypotension in non-gynecologic settings. To the best of our knowledge, both intraoperative hypertension and hypotension have not been systematically evaluated throughout the full anesthetic course in the specific physiologic context of robot-assisted laparoscopic gynecologic surgery performed in the steep Trendelenburg position with pneumoperitoneum. <i>Materials and Methods:</i> In this retrospective study, propensity score matching was performed to minimize selection bias. The demographic data of 694 patients, along with the incidence of intraoperative hypertension and hypotension, were collected through a review of medical records. <i>Results:</i> A total of 694 patients met the selection criteria, all of whom underwent total intravenous anesthesia (TIVA) using either remimazolam (<i>n</i> = 321) or propofol (<i>n</i> = 373). After propensity score matching, 317 pairs were analyzed. The incidence of intraoperative hypertension was higher in the remimazolam group (66.2% vs. 52.1%; <i>p</i> < 0.001), whereas hypotension was more frequent in the propofol group (12.0% vs. 5.4%; <i>p</i> = 0.003). <i>Conclusions:</i> TIVA with remimazolam was associated with a higher incidence of intraoperative hypertension compared to propofol, whereas propofol was more likely to cause hypotension in patients undergoing laparoscopic gynecologic surgery.