Clinical Research Directory

Sugammadex and Menstrual Cycle in Postoperative Nausea and Vomiting

This observational study aims to evaluate the relationship between menstrual cycle phases and the incidence of postoperative nausea and vomiting (PONV) in women of reproductive age undergoing septorhinoplasty surgery. The study's primary objective is to determine whether different phases of the menstrual cycle are associated with variations in PONV frequency. As a secondary objective, the relationship between menstrual phases, PONV incidence, and the use of sugammadex during anesthesia will be analyzed. No additional intervention will be applied beyond routine clinical practice; all data will be collected prospectively from anesthesia records and postoperative evaluations.

Intraoperative Pyloric Balloon Dilatation to Reduce Delayed Gastric Emptying After PPPD

Pylorus-preserving pancreatoduodenectomy (PPPD) is a standard surgical treatment for tumors of the pancreatic head and surrounding areas. However, it is frequently associated with delayed gastric emptying (DGE), a complication that can lead to nausea, vomiting, and prolonged hospital stays. This study is a randomized controlled trial designed to evaluate if a simple intraoperative maneuver (pneumatic balloon dilatation of the pylorus) can reduce the incidence of early postoperative vomiting and DGE. Participants will be randomly assigned to either the intervention group, receiving pyloric dilatation during surgery, or the control group, receiving standard surgery without dilatation. Researchers will monitor postoperative symptoms, gastric emptying function, and overall recovery to determine if this maneuver effectively improves patient outcomes.

Association Between Preoperative Metformin Exposure and Postoperative Nausea and Vomiting in Patients Undergoing General Anesthesia

The aim of this observational study is to investigate the potential effects of metformin on postoperative nausea and vomiting (PONV) in patients undergoing surgery under general anesthesia. The primary research question is: Does preoperative metformin exposure influence the incidence or severity of PONV in patients undergoing general anesthesia? Patients who are already prescribed metformin as part of their routine medical management will be compared with those not taking metformin. Data on PONV occurrence, severity, and recovery outcomes will be collected through structured postoperative surveys administered after surgery.

Propofol Infusion and PONV in Cardiac Surgery

The aim of this observational cohort study is to evaluate the effect of high-dose versus low-dose propofol infusion on the incidence of postoperative nausea and vomiting (PONV) in patients undergoing coronary artery bypass grafting (CABG). The study also seeks to assess the predictive performance of the Apfel and Koivuranta risk scores for PONV in the cardiac surgery population. The primary objective of this study is to determine the impact of routinely administered high-dose propofol on the incidence and severity of PONV in CABG patients. The secondary objective is to evaluate the need for antiemetic therapy during the intensive care unit stay. The investigators will compare patients receiving high-dose propofol with those receiving low-dose propofol to determine whether the antiemetic effect of propofol is dose-dependent. Participants will be asked to: Allow PONV assessments to be performed during the first 24 hours postoperatively, Provide permission for the collection of clinical data (including demographic characteristics, risk scores, opioid consumption, etc.) for research purposes.

ERAS-Based Preoperative Nutrition and Fasting in Total Knee Arthroplasty

The aim of this randomized controlled study is to investigate the effect of implementing a preoperative nutrition education and fasting protocol prepared in accordance with Enhanced Recovery After Surgery (ERAS) guidelines during the 24-hour preoperative period on postoperative hydration status and the incidence of nausea and vomiting in patients scheduled for total knee arthroplasty. Total knee arthroplasty is a commonly performed surgical procedure, particularly in older adults, and postoperative recovery may be negatively affected by surgical stress, anesthesia-related complications, dehydration, and postoperative nausea and vomiting. ERAS protocols emphasize the optimization of preoperative nutrition and hydration as key components to improve postoperative outcomes. In this study, patients undergoing elective total knee arthroplasty will be randomly assigned to an intervention group or a control group. Patients in the intervention group will receive ERAS-based preoperative nutrition education and a standardized fasting protocol during the 24 hours prior to surgery, while patients in the control group will receive routine standard care. Postoperative hydration status, nausea and vomiting severity, and fluid intake-output balance will be assessed and compared between the two groups. The findings of this study are expected to contribute to improving perioperative nursing care practices and enhancing patient recovery and comfort following total knee arthroplasty.

Aromatherapy in Reducing PONV for Total Joint Replacement Patients

This study investigates the effectiveness of aromatherapy in reducing postoperative nausea and vomiting (PONV) among patients undergoing total joint replacement surgery, as these complications can lead to patient discomfort and prolonged recovery. It is designed as a randomized controlled trial involving 159 participants, who will be divided into three groups: an intervention group receiving aromatherapy patches (lavender-sandalwood or orange-ginger) plus standard care, a placebo group with a placebo patch plus standard care, and a control group receiving standard care alone. PONV will be measured using the Rhodes Index of Nausea, Vomiting, and Retching (RINVR) at baseline, 30 minutes after the intervention, and every 12 hours post-surgery. Additionally, patient satisfaction will be assessed through a 5-point Likert scale survey. The primary outcome of the study is the evaluation of RINVR scores, while the secondary outcome focuses on patient satisfaction levels. Data will be statistically analyzed using two-way ANOVA for repeated measures, with a significance level defined as p \< 0.05. The study aims to determine the viability of aromatherapy as a complementary treatment for PONV, potentially improving postoperative care, enhancing patient satisfaction, and offering a cost-effective alternative to conventional anti emetic treatments if proven effective.

Paragastric Block for Pain and PONV in Sleeve Gastrectomy

This single-center, prospective, randomized, double-blind controlled trial aims to evaluate the effects of intraoperative paragastric block (PGBLOCK) on early postoperative visceral pain, postoperative nausea and vomiting (PONV), and analgesic requirements in patients undergoing laparoscopic sleeve gastrectomy (LSG). Despite advancements in multimodal analgesia protocols, visceral pain remains a significant postoperative concern following LSG, contributing to increased opioid use and delayed recovery. Paragastric block is a novel technique targeting autonomic neural pathways-such as branches of the celiac ganglia and vagal nerves-through precise intraoperative injection of local anesthetics near the stomach. A total of 180 patients scheduled for elective LSG will be randomized in a 1:1 ratio to receive either paragastric block with 20 mL of 0.5% bupivacaine or a sham block with 20 mL of isotonic saline. Injections will be administered at six predefined anatomical sites under laparoscopic guidance after gastric resection. The surgical technique, anesthetic protocol, and postoperative care will be standardized for all participants. Both patients and clinical personnel involved in care and outcome assessment will remain blinded to group assignment. The primary outcome is the assessment of postoperative visceral pain using Visual Analog Scale (VAS) scores at 0 and 2 hours postoperatively. Secondary outcomes include PONV severity grading, mobilization status, total analgesic consumption (pethidine + tramadol), and need for rescue antiemetics within the first 24 hours post-surgery. Exclusion criteria include history of upper abdominal surgery, chronic opioid use, pregnancy, severe systemic disease, or allergy to medications used in the protocol. This study is expected to provide high-quality evidence regarding the efficacy of paragastric block in improving early postoperative recovery and reducing opioid reliance after LSG.

Peritoneal Lavage Using Saline or Saline With Ondansetron for Pain Control After Laparoscopic Cholecystectomy

Brief Summary Background: Laparoscopic cholecystectomy is a common procedure where postoperative pain and nausea/vomiting (PONV) remain significant issues, impairing recovery. Standardized multimodal analgesia (e.g., PROSPECT guidelines) is effective for pain, but PONV incidence stays high. Preliminary evidence suggests that adding ondansetron to the standard intraperitoneal saline lavage could provide additional analgesic and antiemetic benefits by blocking peripheral 5-HT3 receptors at the trauma site. Objective: This pilot study aims to evaluate if intraperitoneal lavage with saline + 8mg ondansetron reduces the total burden of postoperative pain over the first 24 hours (Area Under the Curve of the Visual Analog Scale, AUC-VAS/24h) compared to saline lavage alone, within a standardized multimodal protocol. Methods: This is a phase IV, pilot, randomized, controlled, triple-blind clinical trial. 40 adult patients (ASA I-II) undergoing elective laparoscopic cholecystectomy for symptomatic cholelithiasis (Nassar Grade I-II difficulty) will be randomly assigned (1:1) to: Control Group: 500 ml of 0.9% saline intraperitoneal lavage. Intervention Group: 500 ml of 0.9% saline + 8 mg ondansetron intraperitoneal lavage. The lavage is performed for 5 minutes at the end of surgery, followed by complete aspiration. All patients receive a strict multimodal perioperative protocol, including pre-incisional port site infiltration with bupivacaine 0.75%, standardized anesthesia, and postoperative analgesics. The use of intravenous ondansetron is prohibited to avoid confounding. Primary Outcome: Total postoperative pain burden (AUC-VAS/24h). Secondary Outcomes (Exploratory): PONV incidence; time to first rescue analgesia; rescue analgesic consumption (buprenorphine); postoperative sleep quality (Richards-Campbell Sleep Questionnaire); safety and adverse events.

Effects of taVNS Combined With Dexmedetomidine on POVN

To explore the effects and possible mechanisms of dexmedetomidine combined with taVNS on the incidence of postoperative nausea and vomiting in female patients undergoing laparoscopic surgery

Use of Transcutaneous Electrical Nerve Stimulation Device, Reletex Reliefband, With Current ERAS (Enhanced Recovery After Surgery) Protocol to Further Decrease Postoperative Nausea and Vomiting in the Bariatric Surgical Patient Within the First 24 Hours Postoperatively.

The goal of this clinical trial is to learn if the Reletex Reliefband device when used in conjunction with our current treatments will further decrease postoperative nausea and vomiting. The Investigators want to test how well it works, specifically in bariatric surgery patients that are at a higher risk for nausea and vomiting after surgery. Furthermore, the investigators would like to see if using this non-drug treatment option might allow for the same or better control of nausea and vomiting with fewer side effects than the current medications used. This may decrease drowsiness, and allow for earlier mobility, increase comfort, and generally accelerate recovery after surgery. The main questions it aims to answer are: * Does the use of Reletex Reliefband decrease postoperative nausea and vomiting (PONV) in the Bariatric surgical patient, therefore decreasing need for additional anti-emetics. * Does the use of Reletex Reliefband the use of the Reletex Reliefband during the immediate post-operative period reduce PONV, allowing for early mobility, decreased pain and length of stay (LOS). * Does the use of Reletex Reliefband decrease the use of medications for nausea and therefore decrease costs. * Does the use of Reletex Reliefband reduce prolonged PONV and therefore prevent the downstream effects, i.e. less mobility, increased pain, inhibit the patients' ability to comply with recommended treatments. * If reducing PONV using non-pharmaceutical approaches will improve outcomes and patient experiences. Researchers will compare to a placebo (a look-alike device) to see if the Reletex Reliefband works to decrease PONV. Participants will: * All receive the standard Enhanced Recovery After Surgery (ERAS) Protocol before, during and after surgery. (This includes use of premedications for pain, and nausea) * Have a band applied and turned on at the completion of the patient's bariatric sleeve surgery. The band will be adjusted based on need and worn for a total of 24 hours postoperatively. * Have a pedometer clipped to their gown, to remain in place for 24 hours postoperatively * Be assessed regularly during their hospital stay by the nurses to monitor the site of the band, their level of nausea/vomiting, pain levels, and level of mobility

Dexamethasone Palmitate for PONV After Minimally Invasive Endoscopic Surgery

Dexamethasone is almost one of the most commonly used drugs for postoperative nausea and vomiting (PONV) prevention. However, PONV is still a complex problem to be solved; for example, even with preoperative dexamethasone administration, 14.0-26.3% of patients undergoing minimally invasive endoscopic procedures still experience PONV within 24 hours postoperatively. Compared to dexamethasone, dexamethasone palmitate has a long-lasting anti-inflammatory effect, 2-5 times that of traditional water-soluble dexamethasone, with fewer adverse effects. This trial aims to assess the effect and safety of preoperative dexamethasone palmitate on PONV after surgery.

Ginger to Prevent Nausea and Vomiting After Laparoscopic Cholecystectomy

This study aims to evaluate whether preoperative oral administration of ginger (800 mg, given 2 hours before surgery) reduces the incidence and severity of postoperative nausea and vomiting (PONV) within the first 24 hours after laparoscopic cholecystectomy.

Dexamethasone Palmitate for PONV After Open Surgery

Dexamethasone is almost one of the most commonly used drugs for postoperative nausea and vomiting (PONV) prevention. However, PONV is still a complex problem to be solved; for example, even with preoperative dexamethasone administration, there are still some patients still experience PONV within 24 hours postoperatively. Compared to dexamethasone, dexamethasone palmitate has a long-lasting anti-inflammatory effect, 2-5 times that of traditional water-soluble dexamethasone, with fewer adverse effects. This trial aims to assess the effect and safety of preoperative dexamethasone palmitate on PONV after open surgery.

Dexamethasone Palmitate for PONV After Craniotomy

Dexamethasone is almost one of the most commonly used drugs for postoperative nausea and vomiting (PONV) prevention. However, PONV is still a complex problem to be solved; for example, even with preoperative dexamethasone administration, there are still some patients undergoing craniotomy still experience PONV within 24 hours postoperatively. Compared to dexamethasone, dexamethasone palmitate has a long-lasting anti-inflammatory effect, 2-5 times that of traditional water-soluble dexamethasone, with fewer adverse effects. This trial aims to assess the effect and safety of preoperative dexamethasone palmitate on PONV after craniotomy.

Postoperative Analgesia in Hip Arthroplasty

The goal of this clinical trial is to compare analgesic effectiveness of two blocks in hip arthroplasty. The main question that aim to answer is; -Which block is more efficient? Researchers will compare suprainguinal fascia iliaca block with perineural nerve group block. Participants will randomized and one of the blocks will be applied.

Preoperative Use of Pantoprazole for Prevention of Post Operative Nausea and Vomiting in Gynecologic Surgery

The goal of this clinical trial is to see if pantoprazole (a proton pump inhibitor used for acid reflux/heart burn) can reduce nausea and vomiting after gynecologic surgery in women between the ages of 18 and 79. Researchers will compare a placebo to the active medication. Participants will be asked to take three pills around their surgery, two taken before and one taken the night after.

A Comparison Between Palonosetron Versus Granisetron as PONV Prophylaxis in Scoliotic Patients Undergoing Spine Surgery

The aim of this clinical trial is to compare the effectiveness of two Serotonin (5- HT3) receptor antagonist, palonosetron and granisetron, administered along with dexamethasone as a preventive measure against early and delayed postoperative nausea and vomiting (PONV) in adult and adolescent patients with idiopathic scoliosis (IS) undergoing posterior spinal fusion (PSF) surgery under total intravenous anesthesia (TIVA). The main questions the study aims to answer are: How effective is palonosetron compared to granisetron, when both combined with dexamethasone, in preventing PONV after scoliosis surgery? Are there any differences in the need for rescue antiemetics, occurrence of adverse effects related to the study drugs, and patient satisfaction between the two treatment groups? Participants in the study will be randomly assigned to receive either palonosetron or granisetron in addition to dexamethasone as part of their anesthesia and antiemetic regimen. The incidence and/ or severity of nausea, vomiting and retching will be assessed at 1 hour, 4 hours, 12 hours, 24 hours and 48 hours after surgery.

Triple Therapy of Dexamethasone, Palonosetron, and Fosaprepitant As PONV Prevention

As a preventive for postoperative nausea and vomiting in patients undergoing laparoscopic gynecological surgery, the investigators shall investigate the efficacy of the triple therapy of dexamethasone, palonosetron, and fosaprepitant comparing to dual therapy of dexamethasone and palonosetron.

The Correlation Between Intraoperative End Tidal Carbon Dioxide, Perfusion Index and Pulse Variability Index on Postoperative Nausea Vomiting and Pain

Postoperative pain, which is frequently encountered in laparoscopic operations, has been examined in different studies with end tidal CO2 (end tidal carbon dioxide), total insufflated gas amount and PI (Perfusion index) parameters. PONV (postoperative nausea and vomiting), which is encountered more frequently than pain in the postoperative period, has been examined in relation to end tidal CO2. In this study, it was aimed to evaluate the development of postoperative pain and PONV, which affect recovery and patient comfort, by comparing the relationship between end tidal CO2, PI and PVI (Pulse variability index).

Preoperative Chewing Gum on Anxiety and Postoperative Nausea and Vomiting, Gastrointestinal Function

The aim of this study was to investigate the effects of chewing gum before surgery on preoperative anxiety, postoperative gastrointestinal functions (time to first gas, time to first defecation, bowel sounds, abdominal distension) and nausea and vomiting in patients undergoing abdominal surgery. Hypotheses of the Study: In patients undergoing abdominal surgery; H1.1: The first gas output time (hour) is shorter in patients who chew gum before surgery compared to patients who do not chew gum H1.2: The first defecation time (hour) is shorter in patients who chew gum before surgery compared to patients who do not chew gum H1.3: The bowel sounds are heard shorter in patients who chew gum before surgery compared to patients who do not chew gum H1.4: The abdominal distension rate is lower in patients who chew gum before surgery compared to patients who do not chew gum H1.5: The nausea and vomiting rate is lower in patients who chew gum before surgery compared to patients who do not chew gum H1.6: Preoperative anxiety levels of patients who chew gum before surgery are lower than those of patients who do not chew gum Preoperative intervention group patients will chew sugarless gum for at least 30 minutes 30-60 minutes before surgery. The gum will be removed before going to the operating room. No intervention will be performed on control group patients, and standard care will be applied.

PONV Prevention Via Percutaneous Nerve Electrical Stimulation on PC6

This study aims to certify the effectiveness of percutaneous electrical nerve stimulation at Pericardium 6 (PC6) via a wearable equipment during perioperative period on preventing postoperative nausea and vomiting.

Effect of Oliceridine Analgesia on Postoperative Nause and Vomiting

Postoperative nausea and vomiting (PONV) is common after surgery and impede rapid recovery after surgery. Patients who undergo laparoscopic colorectal surgery are more likely to develop PONV due to the pneumoperitoneum, interruption of gastrointestinal system, delay of oral feeding, and nasogastric catheterization, as well as postoperative opioid analgesic requirement to control acute pain. Oliceridine is a novel selective μ-opioid agonist. It stimulates G protein signalling but is markedly less potent than morphine for β-arrestin recruitment; the latter contributes to opioid-related adverse events including PONV. It is postulated that G protein-biased agonists may deliver effective analgesia with fewer opioid-related adverse events. This randomized trial aimed to investigate whether oliceridine for patient-controlled analgesia can decrease the incidence of PONV in patients recovering from laparoscopic colorectal surgery.

Effect of Lavender Aromatherapy on Post-Operative Nausea and Vomiting Among Laparotomy Patients

Post-operative nausea and vomiting are critical problems that occur commonly after the administration of general anesthesia, which can lead to serious health complications such as hemorrhage, electrolyte imbalance and ultimate shock. To prevent these complications, antiemetic drugs are often administered, but they can cause side effects as well as increased healthcare costs. As concerns regarding the side effects of antiemetic drugs have grown, there has been an increased interest in using non-pharmacologic interventions, such as aromatherapy, as an alternative approach to preventing post-operative nausea and vomiting. It involves the therapeutic use of essential oils, and lavender essential oil, in particular, is commonly used for various digestive problems including nausea, and vomiting. Therefore, a key question for a health care professional is how to prevent post-operative nausea and vomiting in best possible manner? To address this question, a study will be conducted in District Head Quarter Sheikhupura, aiming to evaluate the effectiveness of lavender essential oil aromatherapy in reducing post-operative nausea and vomiting among patients admitted for laparotomy under general anesthesia. This study will be a Randomized control trial with the study population consisting of admitted patients after laparotomy under general anesthesia. The sample size will be 70, who will be divided into two groups, each consisting of 35 participants. A convenience sampling technique will be employed for the recruitment of participants. After that, the participants will be randomized into control and intervention groups by computer-generated table numbers in accordance with the inclusion criteria that is, 18-65 age, both genders, laparotomy under general anesthesia, clinically stable, and susceptive to post-op nausea and vomiting within 24hrs following the surgery. whereas, the patients with respiratory diseases, allergies, infections, reversal laparotomy within short duration, having any kind of addiction, those who move to the intensive care unit, those with a history of motion sickness, history of pre-op nausea and vomiting and those who start oral or NG feed before 24hrs will not be part of this study. The data will be analyzed by using Statistical Package for Social Sciences version 22.

Pregabalin in the Obese Patients Undergoing Laparoscopic Sleeve Gastrectomy (LSG).

The aim of this clinical trial is to assess preemptive oral pregabalin administration in the obese patients undergoing laparoscopic sleeve gastrectomy. The main aims of the study are to evaluate postoperative pain treatment and effect on the intraoperative hemodynamical stability. The participants will be divided into 2 groups: with or without preemptive pregabalin administration.