Clinical Research Directory

Quality Improvement Project to Reduce Preoperative Fasting Times Before Elective Procedures

This single-center quality improvement project evaluates preoperative fasting times before elective procedures requiring anesthesiology care. The project aims to reduce prolonged fasting for clear fluids by implementing a local standard operating procedure (SOP) allowing patients to drink clear liquids until being called to the operating room ("drink until called"), supported by staff education and fasting instruction cards. Fasting times and selected perioperative outcomes will be assessed before and after implementation.

Restrictive vs Liberal Intraoperative Fluid Strategy and Postoperative Outcomes After Elective Cesarean Section

Spinal anesthesia for elective cesarean section is frequently associated with hemodynamic instability and postoperative complications such as postoperative nausea and vomiting (PONV) and delayed gastrointestinal recovery. Although intraoperative fluid administration is routinely used to prevent spinal-induced hypotension, the optimal fluid strategy remains unclear. Both restrictive and liberal fluid approaches may influence maternal hemodynamics and postoperative outcomes through different physiological mechanisms. This prospective, single-center, randomized controlled trial aims to compare restrictive (≤3 mL/kg/h) and liberal (\>3 mL/kg/h) intraoperative crystalloid fluid strategies in patients undergoing elective cesarean section under spinal anesthesia. The primary outcome is the incidence of PONV within the first 24 hours postoperatively. Secondary outcomes include postdural puncture headache (PDPH), time to first flatus, hypotension frequency, and vasopressor requirements.

Granisetron Combined With Dexamethasone or Metoclopramide for PONV Prevention After Laparoscopic Cholecystectomy

Postoperative nausea and vomiting (PONV) remain common and distressing complications following laparoscopic cholecystectomy, particularly in female patients. This randomized interventional study aims to evaluate the effectiveness of preoperative granisetron when combined with either dexamethasone or metoclopramide in preventing PONV. The study compares the incidence and severity of nausea and vomiting, as well as the need for rescue antiemetic therapy, among female patients undergoing laparoscopic cholecystectomy under general anesthesia.

Chewing Gum Flavors to Reduce Postoperative Nausea and Vomiting After PIPAC

This randomized controlled clinical trial aims to evaluate the effectiveness of chewing gum with different natural flavors in reducing postoperative nausea and vomiting (PONV) following Pressurized IntraPeritoneal Aerosol Chemotherapy (PIPAC). Adult patients undergoing PIPAC will be randomly assigned to one of three groups: (1) ginger-mint flavored gum, (2) cinnamon flavored gum, or (3) control group with standard postoperative care only. Participants in the intervention arms will chew one piece of gum for 15 minutes in the post-anesthesia care unit (PACU). Nausea intensity (Numeric Rating Scale, 0-10) and the presence of vomiting or retching will be assessed at baseline and every 15 minutes for 2 hours. The study hypothesizes that ginger-mint and cinnamon flavored chewing gums, both plant-based and certified vegan, will be effective, non-pharmacological, and safe methods to reduce nausea and vomiting after PIPAC. This research may contribute to enhanced postoperative comfort and faster recovery by supporting the principles of Enhanced Recovery After Surgery (ERAS).

Chewing Gum vs. Ondansetron as Rescue Treatment for PONV in Female Patients

The proposed randomized clinical trial aims to test and compare the efficacy of chewing gum vs. Intravenous antiemetic ondansetron as rescue treatment for post-operative nausea and vomiting (PONV) among Lebanese female patients undergoing laparoscopic surgery in the post-operative anesthesia care unit (PACU).

Inflammatory Biomarkers as Predictors of PONV Following Pediatric Orchiopexy

Orchiopexy is a common surgical procedure for the treatment of cryptorchidism in the pediatric population, with a high incidence of postoperative nausea and vomiting (PONV). Recent evidence suggests that systemic inflammation may contribute to PONV pathogenesis, and preoperative inflammatory biomarkers such as NLR, PLR, SII, MLR, and SIRI could serve as predictive indicators. This prospective observational study aims to evaluate the relationship between these biomarkers and PONV incidence in children undergoing orchiopexy.

Oliceridine on Postoperative Nausea and Vomiting in Gynecological Laparoscopic Surgery

The aim of this clinical trial is to evaluate the impact of the analgesic Oliceridine on postoperative nausea and vomiting (PONV) following gynecological laparoscopic surgery. It will also assess the safety profile of Oliceridine. The trial seeks to address the following key questions: Can Oliceridine reduce the incidence of postoperative nausea and vomiting (PONV) in gynecological laparoscopic surgery? Does the incidence of PONV differ between patients receiving Oliceridine and those receiving the commonly used analgesic sufentanil in gynecological laparoscopic surgery? Are there any opioid-related adverse reactions in gynecological laparoscopic surgery patients using Oliceridine? Participants will: Receive Oliceridine or sufentanil for anesthesia induction, maintenance, and postoperative pain management. Vital signs during surgery and the occurrence of postoperative nausea and vomiting will be recorded. Be followed up for at least 48 hours.

Effect of Timing of Dexamethasone During Induction on Postoperative Outcomes

This study aims to investigate how the timing of dexamethasone administration during anesthesia induction affects patient outcomes after surgery. Dexamethasone is commonly used to reduce nausea and inflammation during and after surgery. However, it is not yet known if administering dexamethasone at different times during induction (before, during, or after specific anesthetic drugs) leads to better recovery and fewer postoperative complications. Participants will be randomly assigned to one of three groups: one group will receive dexamethasone before fentanyl, another after the muscle relaxant, and a third group will not receive dexamethasone. This approach will help us understand if the timing of dexamethasone affects patient outcomes such as nausea, pain, and recovery quality. The study is triple-blinded, meaning that the participants, care providers, and investigators will not know which group the participants are in, to ensure unbiased results.