View clinical trials related to General Anesthesia.
Filter by:This study focuses on preoperative anxiety in children and non-drug methods to reduce anxiety. During surgery under general anesthesia, children may be anxious because of separation from their parents, fear of anesthesia, or loss of control. In order to reduce the anxiety of the child, anesthesiologists sometimes use an anxiolytic medicine. This premedication can reduce the anxiety of children. However, side effects are often observed as rebound anxiety after the operation or a delay to discharge from hospital. In recent years, alternative methods to premedication have been studied to reduce the anxiety of children. For example, video games and cartoons are distraction methods. Studies have shown that using a video game or cartoon during the waiting phases (in the room, when traveling, in the permutation room) reduces the anxiety of children and with the same efficiency as anxiolytic. In this study, the investigators will evaluate the effectiveness of a tablet game and a cartoon to reduce the anxiety of children.
The aim of this study is to compare the effects of a strategy aimed at increasing alveolar recruitment (high PEEP levels adjusted according to driving pressure and recruitment maneuvers) with that of a strategy aimed at minimizing alveolar distension (low PEEP level without recruitment maneuver) on postoperative respiratory failure and mortality in patients receiving low VT ventilation during emergency abdominal surgery.
Maintaining adequate blood pressure is important for survival of organs. Recent studies have demonstrated that higher blood pressures were necessary for prevention of acute kidney injury and myocardial injury after non-cardiac surgery. Hypotension after induction and maintenance of anesthesia is common. For maintaining adequate blood pressure in a euvolemic patient, vasopressor therapy is required. Norepinephrine (NOR) is commonly used to treat anesthesia-related hypotension. The hepatic circulation has a large number of alpha and beta adrenergic receptors and is very sensitive for adrenergic stimulation such as norepinephrine infusion. Animal studies (Hiltebrand et al.) suggest that NOR has only minimal effect on hepatic blood flow however the effect of NOR on hepatic blood flow in clinical surgical patients remains unclear. The aim of the study is to evaluate the effect of NOR on hepatic blood flow during. goal directed haemodynamic therapy.
Oral carbohydrate loading until 2 h before surgery is well known to be effective in facilitating postoperative recovery and reducing complications, by maintaining homeostasis. However, there are still concerns in implementing this as a universal fasting guideline, because of the risk of pulmonary aspiration. Therefore, we designed this study to compare the two preoperative fasting guideline: (1) keep fasted from midnight until surgery, and (2) oral carbohydrate beverage 800 mL from midnight until 2 h before surgery.
Recently, deep neuromuscular blockade during general anesthesia has been studied by many authors regarding various effects upon patients' outcomes and surgical conditions. We believe deep neuromuscular blockade can be especially beneficial in laparoscopic surgery, because it can expand surgical space and prevent patients' minute movements that can disturb precise operations. In clinical situations, anesthetists tend to compensate the insufficiency of neuromuscular blockade by increasing the dose of other anesthetic agents, which can prolong patients' recovery time and impair the surgical condition. In this study, we plan to divide the patients into 2 groups according to the depth of neuromuscular blockade, and compare the dose of anesthetic agent used to maintain surgical condition.
The aim of the study is to compare, during general anesthesia using neuromuscular blocking agent, the feasibility of a new mechanographic device (ITF handle and Visual ITF software) with a standard acceleromyographic device (TOF Watch SX) and also to assess its safety during the first 24 hours after surgery. The two devices will be studied simultaneously in each patient.
Blood loss in hepatobiliary surgery is correlated with an increase in postoperative complications (e.g. transfusion related lung injury and tumor recurrence) and reduced longterm survival. To reduce morbidity and mortality in hepatobiliary surgery, modulation of the hepato-splanchnic blood flow and pressure is used. In liver surgery pharmacological modulations are widely used to prevent blood loss. For pharmacological modulation central venous pressure is commonly used to reduce the pressure in the inferior vena cava, however little is known about pharmacological effect on blood flow in the hepatic artery and portal vein. The modulation of the hepato-splanchnic blood flow can also play an important role, not only for prevention of blood loss but also for survival of the organs (e.g. ischemic injury due to low flow). Volatile anesthetics induce a dose-dependent reduction of the hepato-splanchninc blood flow. Propofol however, increases hepatic blood flow when compared with volatile anesthetics. Pharmacological modulation of hepato-splanchnic bloodflow with anesthetics such as sevoflurane or propofol can play an important role in modulation of ischemia/reperfusion injury and survival of organs. The aim of the study is to determine and to compare the effect of sevoflurane versus propofol on hepatosplanchnic pressure and hepato-splanchnic blood flow during hepatobiliary surgery.
Quantium Medical Company has an ElectroEncephalograph-based (EEG-based) algorithm with two outputs: qCON for unconsciousness and qNOX for anti-nociception. qCON, is designed to provide information about the depth of the hypnotic state, similar to that provided by the BIS™.
The aim of this study was to investigate the effects of menstrual cycle phases on recovery and cognitive function after general anesthesia.
This study compares two modified techniques(contralateral cricothyroid pressure and ipsilateral head turning technique) of nasogastric tube insertion in anesthetized and intubated patients with the conventional technique.