Active clinical trials for "Postoperative Nausea and Vomiting"

This trial aims to explore whether the intraoperative use of remimazolam can reduce the incidence of postoperative nausea and vomiting (PONV) in high-risk patients. According to the Apfel's simplified score, patients with 3 or more of the following factors are at high risk of postoperative nausea and vomiting (PONV), i.e., women, non-smokers, history of PONV, and postoperative use of opioids.

Postoperative nausea and vomiting(PONV) affects 11 to 60 % of patients undergoing surgery and is a major cause of postoperative morbidity. Risk factors include female gender, non smokers, postoperative use of opioids and a past history of PONV. The simplified Apfel risk score is used to identify patients at risk for PONV. PONV prophylaxis is provided intraoperatively to patients with 2 or more risk factors. In spite of numerous drugs available, control of PONV remains a difficult task. Midazolam is a commonly used drug perioperatively for its anxiolytic and sedative properties. It decreases analgesic requirement and has also been found to have an antiemetic effect. This present study is designed to compare the prophylactic use of iv midazolam with a commonly used combination of dexamethasone-ondansetron in high risk patients (as defined by the modified Apfel score) undergoing laparoscopic surgeries.

This study evaluates the effect of combining non pharmacological anti emetic prophylaxis, namely peppermint essential oil to granisetron and dexamethasone in patient who receive intrathecal morphine for lower segment cesarean section. Half of the patient will receive nasal strip containing peppermint essential oil in addition to granisetron and dexamethasone while the other half will only receive granisetron and dexamethasone.

Auricular acupressure is easily accessible and easily performed, and can significantly relieve PONV symptoms, and improve patient's satisfaction in women receiving general anesthesia for gynecological surgeries. This makes it an economically-beneficial supplemental therapy, worthy of promoting for patients receiving general anesthesia.

Postoperative nausea and vomiting (PONV) is a common complication in the paediatric population and is a source of significant morbidity. The incidence of PONV in children is alarmingly high, as it is estimated to be between 33.2% to 82% depending on patient risk factors. Even with the administration of prophylactic antiemetic medications, the risk of PONV can still be approximately 30%. Various independent risk factors have been implicated in the development of paediatric PONV. The following risk factors were identified: a duration of surgery 30 minutes or longer, age 3 years or older, strabismus, adenoidectomy, and tonsillectomy surgeries, a history of PONV in the child or immediate relatives (parents or siblings), use of volatile anaesthetic, use of opioids, increased postoperative pain, prolonged preoperative fast, and state of dehydration Significant improvement in patient satisfaction can be achieved if the incidence of PONV is decreased. Although not usually life-threatening, PONV may lead to complications commonly associated with vomiting, including dehydration, electrolyte imbalance, and aspiration of gastric contents. In some surgical cases, PONV has also led to wound complications, oesophageal rupture, subcutaneous emphysema, pneumomediastinum, and bilateral pneumothorax. PONV typically describes nausea, vomiting, or retching that can occur starting in the post-anaesthesia care unit (PACU) and continuing through the 24 hours following surgery. PONV occurs twice as often in children than in adults and can lead to longer PACU stays, delays in hospital discharge and subsequent unplanned readmissions, which ultimately lead to significant financial burden on the patients. A variety of antiemetic regimens are recommended for the prevention and treatment of PONV in children, including pharmacotherapy with dexamethasone, 5HT-3 receptor antagonists, butyrophenones, prokinetics, anticholinergics and antihistamines. Hydration is yet another important factor in the development of PONV in paediatric patients. Administration of intravenous dextrose-containing solutions may also prevent PONV. Investigation of the effect of perioperative intravenous crystalloid administration on PONV was initially motivated by the results of observational studies suggesting that perioperative volume status influenced postoperative complication rates. This work showed that PONV was among the most prevalent events after surgery and motivated subsequent inquiry into the relationship between perioperative volume resuscitation and PONV . Multiple reviews have explained the complex physiology of nausea and vomiting. Briefly, the vomiting centre, located in the lateral reticular formation of the medulla, co-ordinates efferent activity to the respiratory, gastrointestinal, and abdominal musculature to produce vomiting. This centre receives afferent stimuli from a variety of sites: the pharynx, gastrointestinal tract chemo- and stretch receptors, the brain (including vestibular information from cranial nerve VIII), aortic baroreceptors, and the chemoreceptor trigger zone. The chemoreceptor trigger zone is a neural centre physiologically outside of the blood-brain barrier, which provides afferent information to the vomiting centre in response to noxious stimuli in the blood. Patients particularly paediatrics typically present for surgery with a fluid deficit secondary to fasting, bleeding, bowel preparation, and other causes of dehydration. It has been proposed that brainstem, vestibular, and intestinal hypoperfusion, with concomitant ischaemia, may mediate nausea and vomiting. Supplemental intravenous crystalloids could serve to mitigate this effect; however, no proven explanation for the putative role of volume status in this model exists. Hypovolemia has been associated with a rise in postoperative morbidity and mortality ranging from PONV to other complications such as organ dysfunction . Hypovolemia from overnight fasting without adequate fluid replacement can cause adverse effects postoperatively . Intravenous crystalloids are widely administered before, during, and after procedures requiring general anaesthesia. They are inexpensive and have relatively few adverse effects. A prior systematic review has suggested that supplemental intravenous crystalloids may be effective in preventing PONV . However, studies of supplemental perioperative intravenous crystalloids were noted to vary widely on the specific volumes administered. Despite evidence-based, multimodal prophylactic regimens, PONV remains a prevalent clinical problem . The use of pharmacologic agents alone reduces the risk of PONV but increases the risk of side effects. Intravenous crystalloids are an attractive treatment modality. Many different intravenous fluid interventions have been tested in a wide variety of surgical and anaesthetic contexts.

This study was conducted to compare the effectiveness of care based on the "Accelerated Recovery After Surgery (ERAS) Protocol" and the traditional method in bariatric surgery and demonstrate the difference the two methods based on evidence.

Perioperative stress is associated with various influences before and after surgery. Instead of benzodiazepines, patients can be calmed by non-pharmacological methods. One of these is perioperative medical hypnosis, which has also other beneficial effects such as lower opioid consumption, better wound healing, shorter hospital stays. Acupuncture is used for analgesia. Is is effective for preventing and treating nausea and vomiting. Hypothesis of the study is that perioperative acupuncture reduces the consumption of analgesics and anaesthetics during surgery. The investigators will also study the impact of acupuncture on postoperative nausea and vomiting and analgesic consumption in the postoperative recovery unit and the occurrence of postoperative delirium.

Previous reports demonstrated that dexmedetomidine could reduce the incidence of postoperative nausea and vomiting (PONV). Dexamethason also had been commonly used for ajuvant drugs for preventing and reducing PONV. So investigator want to study about the effect of dexmedetomidine only or combined with dexamethasone for preventing PONV.

To evaluate the efficacy of pre-empetive administration of Aprepitant, Versus Gabapentin prophylaxis for reducing the incidence of postoperative nausea and vomiting in Laproscopic gynacological surgeries.

There are evidences that intraoperative administration of low doses of ketamine may contribute to control the postoperative pain by acting on the N-methyl-D-aspartate (NMDA) channel, reducing the effects related to the tolerance and hyperalgesia induced by opioids. This study aims to evaluate the effects of administration of this agent not only as an analgesic but also its role in the quality of recovery from anesthesia, which includes observation of emotional, psychological and physical aspects. Patients who were scheduled to undergo total intravenous anesthesia (TIVA) for laparoscopic cholecystectomy will be enrolled in this clinical study. After induction of anesthesia, patients will receive one of three solutions according to the randomly selected group: ketamine 0,2 mg/kg; ketamine 0,4 mg/kg or saline. In the recovery room and on the ward, data related to the presence of pain, analgesic consumption, the incidence of nausea and vomiting, dizziness or hallucinations will be recorded. The next day, the quality of recovery will be evaluated by application of the questionnaire QoR40 (Quality of Recovery Questionnaire-40).