View clinical trials related to General Anesthesia.
Filter by:This prospective open-label randomized study, patients were having elective urological surgery scheduled to last longer than 1 h under necessitating general anesthesia.Group-P: (Propofol group): 3 mg kg-1 min-1 propofol was pumped continuously after endotracheal intubation. Group-PAS: (Propofol and after 20 min adding Sevoflurane group): 3 mg kg-1 min-1 propofol were pumped continuously and add 1% end-tidal sevoflurane 20 minutes after endotracheal intubation. Group-PS: (Propofol and Sevoflurane group): 3 mg kg-1 min-1 propofol were continuously pumped after endotracheal intubation, and 1% sevoflurane was inhaled continuously at the same time. Group-S: (Sevoflurane group): 1% sevoflurane continued to maintain anesthesia after endotracheal intubation. Group-PSu: (Propofol and Sufentanil group): 3 mg kg-1 min-1 propofol, 0.01 μ g kg-1 min-1 sufentanil were pumped continuously at maintain phase
The purpose of the study is to evaluate the influence of different durations of the end-expiratory occlusion test to predict fluid responsiveness in mechanically ventilated patients in the operating room.
The study compares the safety of using pressure controlled ventilation with a positive end-expiratory pressure (PEEP) during induction of general anaesthesia immediately after apnoea to a standard method starting ventilation manually without PEEP immediately after apnoea.
There is no literature information about the flow rate of fresh gas mixture (air+O2) in the patients who underwent general anesthesia. Different flow rates of fresh gas mixture are used in both the investigator's hospital and the experiences of the anesthesiologists. It is aimed to study the effects of different fresh gas flow rates on the rate of temperature and moisture of the airway of patients who underwent general anesthesia.
The aim of this study is to adjust the end tidal inhalation anesthetic concentration by observing the entropy value in patients who will be provided anesthesia maintenance with volatile anesthetics after applying the routine epidural anesthesia technique and to observe the end tidal volatile concentration that will provide to remain in the target entropy limits during the operation.
This study will investigate the potential of guiding remifentanil analgesia during cardiac and vascular surgery in moderate to high risk patients requiring general anesthesia.
Adequate sleep is necessary for physical and mental health of human being. Although surgery and anesthesia techniques have improved in resent years, postoperative sleep disturbance remains a challenging problem in surgical procedures1. Postoperative sleep fragmentation and poor sleep quality can not only result in hyperalgesia and a delay in postoperative recovery2, lack of sleep after surgery can also bring many potential adverse effects such as cognitive disorders (such as delusions, delirium), chronic pain, mood disorders, metabolic disorders, and pro-inflammatory changes3-5. Previous studies have reported that age, preoperative comorbidity and severity of surgical trauma were independent factors that associated with postoperative sleep disturbance6,7. Our prior studies have also found that patients are more likely to experience decreased sleep quality after receiving general anesthesia, which was characterized by a decrease in each sleep stage8. Propofol and sevoflurane are commonly used general anesthetics in clinical practice. The choice of anesthetic may also affect the cognitive outcome after surgery, but the results of clinical studies have always been contradictory. Some studies report that the cognitive results after inhalation are worse than those after intravenous anesthesia. And the incidence of dreaming was significantly higher in the sevoflurane anesthesia group compared to the propofol group9-11. Another study conduct among infants proved that compared with propofol-remifentanil, sevoflurane appears to be associated with less sleep disturbances in the first weeks after surgery12. Based on these conflicts, the aim of the current study was to compare the effect of propofol vs sevoflurane on early postoperative sleep quality and complications of patients receiving laparoscopic surgery after general anesthesia.
Laryngeal mask airway is inserted into the oral cavity and seals the upper esophagus and the surrounding tissue, effectively securing airway. Laryngeal mask airway has been widely adopted in the clinical practice. On the other hand, cricoid pressure has been used to reduce the risk of pulmonary aspiration of gastric contents during induction of general anesthesia. However, cricoid pressure might impede placement of the laryngeal mask airway, thereby preventing effective ventilation. Recently, left paratracheal pressure was introduced as an alternative to cricoid pressure and reported to be more effective than cricoid pressure in the prevention of gastric air insufflation during positive-pressure ventilation by facemask. Since this method compresses low left paratracheal level, it may affect the successful insertion of laryngeal mask airway. In this study, the investigators aimed to evaluate the effect of paratracheal esophagus pressure on the insertion of laryngeal mask airway compare to conventional cricoid pressure.
General anesthesia is a medically induced state of low reactivity consciousness involving amnesia, immobility, unconsciousness, and analgesia, which is similar to natural sleep. Its aim is to create a state of sensory deprivation to induce a lack of motor reaction to stimuli and to obtain an explicit amnesia. Some studies found that general anesthesia as an independent risk factor could result in a desynchronization of the circadian time structure and cause postoperative sleep disorders characterized by reduced rapid eye movement (REM) and slow wave sleep (SWS), which have significant deleterious impacts on postoperative outcomes, such as postoperative fatigue, severe anxiety and depression, emotional detachment and delirium, and even pain sensitivity or postoperative pain of patients.Several studies also indicated that circadian rhythms existed in human and controlled by a main internal central clock, the suprachiasmatic nuclei, located in the anterior hypothalamus, which produce and regulate biological rhythms such as sleep arousal, hormones and metabolism could also affect the dose of general anesthesics, which lead to different postoperative recoveries and may have different effects on postoperative sleep quality. Previous studies proved that postoperative sleep disturbances and poor sleep quality are associated with higher postoperative pain, changes in behavior and poor emotional well-being, which could further aggravate postoperative sleep quality. At present, there are few studies which are about the effect of circadian rhythm for different timing of surgery on intraoperative anesthestic requirement, postoperative sleep quality and pain under general anesthesia.
Comparison between results of repair of cut flexor zone II under General anesthesia and Walant