View clinical trials related to Dexmedetomidine.
Filter by:Total knee arthroplasty surgery is associated with severe postoperative pain and adequate pain management is necessary for early postoperative mobilization and rehabilitation. Although good postoperative pain control may be achieved by continuous epidural anesthesia or femoral nerve block, both methods have adverse effects such as muscle weakness, which may delay postoperative mobilization.
Brachial plexus block is a regional anaesthesia technique employed as a safe and valuable alternative to general anaesthesia for upper limb surgery. In recent practices of day care surgeries, brachial plexus block seems to be a better alternative to general anesthesia with minimal hospital stay and better analgesic effect. Among several techniques of brachial plexus block, supraclavicular approach is considered as easiest, effective and can be performed much more quickly than other approaches. Various local anaesthetic agents and adjuvants are used for this purpose. Among them, bupivacaine has been the most widely used long-acting local anaesthetic agent. Combining local anesthetics with different adjuncts can prolong the duration of analgesia associated with brachial plexus block. Among various adjuncts, dexamethasone and dexmedetomidine have been identified as clinically effective adjuncts. Several metaanalyses have convincingly demonstrated their efficacy in prolonging the analgesic duration of brachial plexus block. However, there has been limited research conducted to compare the effects of dexamethasone and dexmedetomidine added as adjuvants to the local anesthetics for BPB. Studies have demonstrated benefits of one agent over other without any definitive conclusion as which is the best agent for this purpose. Therefore, there is a need of study to compare the onset and duration of bupivacaine when dexmedetomidine or dexamethasone is used as an adjuvant to bupivacaine for ultrasound-guided supraclavicular BPB
Scoliosis correction surgery is followed with severe pain. Patients after scoliosis correction surgery usually require high dose opioids and long duration analgesia, which may increase side effects and even drug tolerance. S-ketamine is the pure dextrorotatory enantiomer of ketamine with stronger analgesic effect and less side effects, but mental side effects is a major concern. Dexmedetomidine can be used as an analgesic supplement; it also improves sleep quality in postoperative patients. We hypothesize that low-dose ketamine and dexmedetomidine in combination with opioids may have synergistic effect in analgesia and reduce drug-related side effects. This study aims to explore the effect of low-dose of S-ketamine and dexmedetomidine in combination with opioids for postoperative patient-controlled intravenous analgesia in patients following scoliosis correction surgery.
Dexmedetomidine is a highly selective alpha2-adrenergic receptor agonist with sedative, analgesic, anti-anxiety, and inhibitory sympathetic nerve excitation properties. It is commonly used in clinical anesthesia and intensive care.Radical gastrectomy for gastrointestinal malignant tumors is a common major operation in clinical practice, with long operation time, great trauma and strong stress response of patients. Dexmedetomidine is often used in general anesthesia during such operations, but its long-term use or large dose may produce certain side effects.Common side effects of dexmedetomidine include bradycardia and hypotension, etc. Previous studies have reported that dexmedetomidine can prolong QT interval and is at risk of causing tip torsion type ventricular tachycardia.Abnormal Potassium may affect myocardial repolarization and increase the risk of tip torsion ventricular tachycardia.The main purpose of this study was to observe the effects of long-term use of dexmedetomidine on perioperative internal environment such as electrolyte and rehabilitation indicators during radical general anesthesia for gastrointestinal malignancy, and the secondary purpose was to explore the optimal dose of dexmedetomidine for general anesthesia for patients undergoing radical general anesthesia for gastrointestinal malignancy.
Patients having lumbar spinal fusion often complain about severe postoperative pain and postoperative rehabilitation process can be affected negatively. Postoperative pain that cannot be well controlled may lead to delayed mobilization, pulmonary and thromboembolic complications, prolonged hospital stays, and chronic pain syndromes. Pain after spinal surgery can arise from several different tissues, such as the vertebrae, disks, ligaments, dura, facet joint, muscle, fascia, and subcutaneous and cutaneous tissues. Ultrasound-guided lumbar erector spinae plane block (ESPB) has been shown to reduce postoperative pain in patients undergoing posterior lumbar interbody fusion (PLIF). However, the duration of analgesia after single-shot ESPB with commonly used local anesthetics is reported to be no more than 12 h, which often not long enough to provide satisfactory postoperative pain relief, as the pain typically lasts for several days. Compared with perineural route, intravenous additives to local anesthetics are commonly accepted as its safety and efficiency have been reported. Moreover, co-administration of intravenous dexamethasone and dexmedetomidine significantly prolonged the time to first rescue analgesic request after single-shot interscalene brachial plexus block. However, more data are needed especially for lumbar ESPB.
BACKGROUND: Some studies have revealed that intravenous (IV) lidocaine or dexmedetomidine might improve the quality of recovery undergoing laparoscopic surgery. The investigators investigated whether co-administration lidocaine and dexmedetomidine could better improve the the quality of recovery after laparoscopic total hysterectomy. METHODS: One hundred and forty-four women with elective laparoscopic total hysterectomy were randomly divided into four groups: Patients in group L received a bolus infusion of lidocaine (2%; 1.5 mg/kg over 10 min before the induction of anesthesia), and then lidocaine was infused at a rate of 1.5 mg/kg/h until close the pneumoperitoneum. Patients in group D received a bolus infusion of dexmedetomidine (0.5 µg/kg over 10 min before the induction of anesthesia), and then dexmedetomidine was infused at a rate of 0.4 μg/kg/h until close the pneumoperitoneum. Patients in group LD received a bolus infusion of lidocaine (2%; 1.5 mg/kg) and dexmedetomidine (0.5 µg/kg) over 10 min before the induction of anesthesia, and then lidocaine and dexmedetomidine were infused at a rate of 1.5 mg/kg/h and 0.4 µg/kg/h until close the pneumoperitoneum, respectively. Patients in group C received the same volume of normal saline 10 min before the induction of anesthesia, and then normal saline (0.9%) was continuously infused in an equal volume until close the pneumoperitoneum. Primary outcome was the quality of recovery (QoR-40) at 1 day prior to sugery, 1 day after sugery, and 2 days after sugery. The secondary outcomes included perioperative remifentanil consumption, postoperative VAS scores, the incidence of postoperative nausea and vomiting, postoperative rescue analgesics and anti-emetics, recovery time, extubation time, and Ramsay sedation scale at 5 min, 10min, 30 min, 60 min after extubation.
Postoperative delirium (POD) is a common complication, and the incidence rate is about 25% in non cardiac surgery. Previous studies have reported that the total incidence of neurological pod ranged from 10% to 22%. Dexmedetomidine (DEX) is an a-2 adrenergic agonist for sedation. This kind of drug has little effect on respiratory function, is easy to wake up and has analgesic effect. It is a commonly used perioperative adjuvant drug. However, for neurosurgical patients with brain tumors, the role of DEX in POD is not clear. The purpose of this study was to investigate the effect of DEX on POD in neurosurgical brain tumor surgery.
The aim of the study is to compare the effect of melatonin, given orally, dexmedetomidine, given intranasally, and dexmedetomidine given sublingually on sleep induction, sleep duration, their possible impact on vital functions and technical implementation of EEG.
An increasing number of studies have reported the use of dexmedetomidine in clinical practice. However, few studies have reported on the intranasal use of dexmedetomidine in radiological procedures The aim of this work is to compare the efficacy and safety of intranasal dexmedetomidine and intranasal midazolam in pediatrics undergoing MRI.
Femoral nerve block (FNB) is a first-line analgesic technique for multimodal analgesia after total knee arthroplasty (TKA). Recent studies and meta-analysis indicate that dexmedetomidine combined with local anesthetics for FNB can prolong the analgesic duration, improve the analgesic efficacy, inhibit local inflammatory response, and reduce narcotic consumption. The investigators hypothesize that dexmedetomidine combined with ropivacaine for FNB can also improve functional recovery in aged patients after TKA.