View clinical trials related to General Anesthesia.
Filter by:The study evaluates the efficacy of two different anesthetic techniques in patients undergoing unilateral knee arthroscopy. Participants will be randomized to receive either subarachnoid block with 2-chloroprocaine or general anesthesia plus intravenous fentanyl.
Among advanced intubation equipment for difficult intubation, a lighted stylet (lightwand) is a widely used equipment in cervical immobilized patients. However, a lightwand, which is used blind, is difficult to make midline positioning and can increase airway complications and hemodynamic changes. In contrast, videolaryngoscope can view vocal cord indirectly through camera, however, it requires cervical movement. Therefore, investigator hypothesized that the combined use of video-laryngoscope and lightwand for intubation can improve the efficacy of intubation compared to the use of lightwand alone in cervical immobilized patients.
Ambu AuraGain, I-gel, Air-Q intubating laryngeal airway are the most commonly used supraglottic airway. In children, they can be used as intubation conduits. However, there has been no guideline for optimal insertion depth of endotracheal tube through those supraglottic airway. In this study, the investigators will measure the distance from grille of those supraglottic airways to glottis using fiberoptic bronchoscope in children undergoing anesthesia. This distance allows us to predict an appropriate depth of endotracheal tube when it should be inserted through each supraglottic airway.
The influence of different head and neck positions on the effectiveness of ventilation with the Ambu AuraGain airway remains unevaluated. This study aimed to evaluate the influence of different head and neck positions on ventilation with the AuraGain airway. AuraGain will be placed in all patients, and mechanical ventilation will be performed using a volume-controlled mode with a tidal volume of 10 ml/kg. The expiratory tidal volume, peak inspiratory pressure, oropharyngeal leak pressure, and ventilation score will be assessed first for the neutral head position and then for the extended, flexed, and rotated head positions in a random order. Fiberoptic bronchoscopic view will be also assessed for each head and neck positions.
The influence of different head and neck positions on the effectiveness of ventilation with the Ambu AuraGain airway remains unevaluated. This study aimed to evaluate the influence of different head and neck positions on ventilation with the AuraGain airway. An AuraGain will be placed in all patients, and mechanical ventilation will be performed using a volume-controlled mode with a tidal volume of 10 ml/kg. The expiratory tidal volume, peak inspiratory pressure, oropharyngeal leak pressure, and ventilation score will be assessed first for the neutral head position and then for the extended, flexed, and rotated head positions in a random order.
Children aged below 7 years are randomly assigned to AuraGain Group or I-gel group. After anesthetic induction, AuraGain or I-gel is inserted and mechanical ventilation is started. Oropharyngeal leak pressure, peak inspiratory pressure, success rate for insertion, ease for insertion, ease for gastric tube insertion and fiberoptic bronchoscopic views will be compared between two groups.
Patients were randomized into 2 groups according to the anesthetic, propofol or sevoflurane. Induction and maintenance were standardized, and after the end of surgery, two steady-state recordings were performed at BIS 25 and BIS 55. Bispectral Index and ECG were continuously recorded and cardiac autonomic nervous activity was investigated using spectral analysis of RR Interval variability
Background: The purpose of this retrospective study is to evaluate surgical outcomes of pyloromyotomy in infants performed under spinal anesthesia compares to general anesthesia. Methods: After receiving the approval of the hospital ethics committee, retrieving, reviewing files and collecting data. Primary outcomes: total operating room time, duration of surgery, pain management and postoperative apnea episodes, time of regaining full enteral feeding. Secondary outcome measures: include cardio-respiratory changes and events, and substantial vomiting postoperatively.
The action of anesthetics such as propofol is not immediate after intravenous administration. Delay in pharmacodynamic effect of intravenous drugs is a commonly observed phenomenon in total intravenous anesthesia (TIVA). On the other hand, the measure of the clinical effect of propofol by EEG processed monitors like the bispectral index (BIS) also requires some processing time for the analysis of the recorded signal. Thus, the resulting BIS value provided by the monitor is affected by a delay. When a BIS based controller is used, the propofol infusion rates are defined using information of the BIS signal available. The delay in the BIS signal is an important issue as it can affect the performance of the controller. There are scarce contributions to address the delay in automatic administration of anesthesia. Our proposal to deal with the dead time in the control action of the hypnotic component of anesthesia is a proportional-integral (PI) algorithm with a Smith predictor. The aim of this study is to evaluate and compare the feasibility and effectiveness of a closed-loop control using the Smith predictor versus manual control for propofol administration guided by the bispectral index (BIS) in adults patients. The objective is to show that a closed loop control can be a useful tool to provide safe and effective intravenous anesthesia and that the use of specific controller for delay rejection is a reliable strategy.
The purpose of the study is to quantify biomarkers of neural damage in neonates exposed to varying levels of volatile anesthetic in utero.