View clinical trials related to Propofol.
Filter by:The QT interval is a measure of the combination of cardiac depolarization and repolarization as it encompasses both the QRS complex and the J-T interval. QT, QTc, QTd prolongation or shortening has been associated with ventricular arrhythmias . In order to define non-torsogenic drug-induced arrhythmias, the index of cardio-electrophysiological balance (iCEB), which is a new marker calculated with the QT/QRS formula, has been defined. In our study, we planned to evaluate the effects of dexmedetomidine and propofol on cardiac electrophysiology with all these parameters, especially the newly defined iCEB.
A total of 120 patients (American Society of Anesthesiologist Physical Status 1-3) who signed a consent form among patients aged 19-80 years who are scheduled to undergo brachial plexus block and upper extremity surgery under monitored anesthetic care at our hospital were enrolled. Recruited patients are divided into three groups through computer-generated randomization by using the patient identification number assigned during patient recruitment. (40 people in each group) Standard monitoring is performed when the patient arrives at the operating room. Patients receive oxygen at 5-6 L/min using a simple facial mask, and receive a brachial plexus block under ultrasound guidance. After confirming the success of brachial plexus block, administration of propofol, remimazolam, or dexmedetomidine is started according to the assigned group. Assess the patient's level of consciousness through the MOAA/S (modified observer's assessment of alertness/sedation scale) scale. The drug injection ends when the skin suture is started after the main procedure. The time from the end of injection of each drug until MOAA/S becomes 5 points is measured. After the patient is transferred to the recovery room, the Aldrete score is assessed. The recovery profile, perioperative hemodynamic change, desaturation event, block duration, patient movement during surgery, patient satisfaction, and surgeon's satisfaction were investigated and analyzed for comparison.
The purpose of this study is to compare the incidence of hypotension between remimazolam and propofol for intraoperative sedation in patients undergoing hip surgery with spinal anesthesia.
Cerebral autoregulation (CA) is the property of the cerebral vascular bed to maintain cerebral perfusion in the presence of changes in blood pressure. In the case of anesthesia, altered cerebral autoregulation, including altered carbon dioxide and hemodilution, can impair physiological changes in the body and lead to poor postoperative prognosis. As a novel ultra-short-acting benzodiazepines drugs, remimazolam has been accepted for induction and maintenance of clinical anesthesia. Compared to the traditional benzodiazepines drugs, remimazolam combines the safety of midazolam with the effectiveness of propofol, and also has the advantages of acting quickly, short half-life, no injection pain, slight respiratory depression, independent of liver and kidney metabolism, long-term infusion without accumulation, and has a specific antagonist: flumazenil. Our study aimed to investigate the different effects of remimazolam and propofol on dynamic cerebral blood flow autoregulation function during general anesthesia.
How anesthetic drugs induce and maintain the behavioral state of general anesthesia is an important question in medicine and neuroscience. Different anesthetic drugs act on different molecular targets and neural circuit mechanisms, exhibiting drug-specific EEG features. As a novel ultra-short-acting benzodiazepines drugs, remimazolam has been accepted for induction and maintenance of clinical anesthesia. Compared to the traditional benzodiazepines drugs, remimazolam combines the safety of midazolam with the effectiveness of propofol, and also has the advantages of acting quickly, short half-life, no injection pain, slight respiratory depression, independent of liver and kidney metabolism, long-term infusion without accumulation, and has a specific antagonist: flumazenil. This study aimed to investigate the differences in the characteristics of EEG oscillations during general anesthesia by comparing propofol and remimazolam.
The growth of gliomas often infiltrates important brain tissues and impairs subcortical fiber transmission, resulting in changes in global brain network connectivity. Most of the current anesthesia depth monitoring methods are based on healthy brain function population，which is difficult to reflect the sedation depth of glioma patients accurately. Therefore, this study aims to explore the characteristics of brain network connectivity in glioma patients under different sedation depths by electroencephalogram (EEG) and auditory event-related potential (AERP) methods, which may provide a research basis for sedative titration and anesthesia depth identification in glioma patients.
The pharmacokinetic profile of various drugs is altered in obese patients especially those administered by the intravenous route. Propofol is the commonly used intravenous anesthetic agent for induction and maintenance of anaesthesia as part of total intravenous anaesthesia (TIVA) regimen. A major concern with propofol dosing based on total body weight (TBW) in obese patients is disproportionate drug administration leading to undue drug accumulation in body with a potential to overdosing, delayed recovery from anaesthesia, and adverse hemodynamic outcome. Studies on propofol dosing based on various weight scalars have recommended that lean body weight (LBW) should be used for calculating bolus dose during anaesthesia induction and TBW or adjusted body weight (ABW) for arriving at an infusion dose required for maintenance of anesthesia. Although propofol delivery based on dose calculated by TBW has been well researched the evidence for propofol delivery based on dose calculated by ABW is lacking. Recent advance in the delivery of propofol has been the development of computer controlled anaesthesia delivery systems. These devices deliver propofol based on patient's frontal cortex electrical activity as determined by bispectral index (BIS). Evaluation of anaesthesia delivery by these systems has shown that they deliver propofol and maintain depth of anaesthesia with far more precision as compared to manual administration. One such indigenously developed computer controlled anaesthesia delivery system is the closed loop anesthesia delivery system (CLADS). CLADS functions on control of processed EEG response parameter captured from anesthetized patients with the help of a BIS- monitor, which is continuously fed into an automated drug infusion pump. The infusion pump then accordingly delivers the anesthetic drug to the patients based on pharmacodynamic requirements. The investigators plan to evaluate the propofol maintenance dose requirement based on TBW versus ABW using CLADS for propofol delivery.
This study compares hypnosis via virtual reality to sedation with commonly used intravenous anesthetic agents (propofol and remifentanil) during oocyte retrieval. The main objective of this prospective randomized controlled study will be a reduction of 50 percent of the doses of remifentanil and propofol administered during oocyte retrieval while maintaining satisfaction with the quality of care.
Background: Propofol based sedated anesthesia was widely used in percutaneous radiofrequency ablation and hypoxia/desaturation is one of the most frequent adverse events during this procedure. No effective methods have been found to prevent hypoxia/desaturation so far. The aim of this study was to evaluate whether the incidence of hypoxia/desaturation was different between the high-flow nasal cannula (HFNC) therapy group (which can provide heated and humidified oxygen up to 60L/minute.) and the nasal cannula group. Methods: In a randomized, prospective and double-blind study,100 patients undergo percutaneous radiofrequency ablation based on propofol sedation were assigned into two groups: the nasal cannula group (O2 [6 L/minute] was supplied via an HFNC) and the HFNC group (O2 [40 L/minute] was supplied via an HFNC). The primary outcome is the incidence of hypoxia/desaturation during surgery. Other adverse events were also recorded.
Awake craniotomy require a cooperative patient during resection neurosurgery phase. Anesthesiologist should guarantee analgesia, sedation, nausea and vomiting prevention, while maintaining normal vital parameters. Neurosurgeon could be help by Intraoperative electrocorticography to maximise lesion resection and avoiding neurologic sequelae. Propofol and remifentanyl have been largely used. Dexmedetomidine represents an alternative. However little is known about the role of dexmedetomidine on Intraoperative electrocorticography.