View clinical trials related to General Anesthesia.
Filter by:The effects of anesthesia and surgery can lead to stress responses that result in hormonal and metabolic changes in the body. The immune system and the nervous system communicate both ways, and it was found that nociception and proinflammatory cytokines play a joint regulatory role, i.e., increased production of proinflammatory cytokines can worsen the pain. Major surgery can trigger the release of cytokines such as IL-1, IL-6, and TNF-α.
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
Postoperative cognitive dysfunction (POCD) is a common postoperative complication in patients aged 65 and over, which refers to cognitive function changes such as memory decline and attention deficit after anesthesia and surgery. In severe cases, personality changes and social behavior decline may also occur, resulting in irreversible cognitive impairment.Previous studies have suggested that cognitive dysfunction after general anesthesia is linked to a genetic disorder of the body clock.Exosomes are cellular forms of cellular microvesicles containing complex RNA and proteins.Exosomes can mediate the expression of genes in the late transcriptional period of the clock system, and directly or indirectly participate in the negative regulation of rhythm expression of minute control genes, playing an important role in the intercellular circadian rhythm information output pathway.Rhythm disorders in the core biological clock system of urinary exosomes and the clock control genes related to kidney can early indicate circadian rhythm changes in the core biological clock system.The sorting and detection of urinary exosome clock information materials in patients has the advantages of easy access, continuous monitoring, early diagnosis and less damage, making urinary exosome a biomarker for the diagnosis and monitoring of circadian rhythm of a good kidney biological clock system.
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.
Electroencephalography (EEG) monitoring reflect the brain electro-activity. Different anesthetics may show different changes in EEG during anesthesia. Etomidate and propofol are widely used for general anesthesia. The characteristic changes of these two anesthetics may be different.
Endotracheal intubation refers to the use of special equipment, through the nasal cavity or oral cavity, through the throat, glottis, the process of inserting the endotracheal tube into the trachea or bronchus. Its main function is to maintain respiratory tract patency, positive pressure ventilation and removal of respiratory secretions. Endotracheal intubation and sputum suction are important parts of first aid and surgical anesthesia. Our team developed a magnetic navigation tracheal intubation and airway cleaning robot system to achieve mechanization and integration of surgical anesthesia, airway management. This study is designed to investigate the safety and efficacy of the Magnetic navigation tracheal intubation and airway cleaning robot.
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.
Postoperative cognitive dysfunction (POCD) is a common postoperative complication in patients aged 65 and above. It refers to the cognitive function changes such as memory decline and attention loss after anesthesia and surgery. In serious cases, people may also experience personality changes and decline in social behavior ability, which will develop into irreversible cognitive impairment.Some studies reported that 25.8% of elderly patients presented POCD one week after non-cardiac surgery, and the incidence at 3 months after surgery was still 9.9%, which could increase the mortality in the first year after surgery.In recent years, studies have also proved that POCD is associated with patients' inability to perform their original jobs after non-cardiac surgery.Postoperative cognitive dysfunction seriously affects the clinical outcome, in addition to medical costs and other issues will bring an impact on the society and family.With the aging of the population, how to prevent cognitive dysfunction in elderly patients is a major challenge for perioperative management.There is a certain correlation between circadian rhythm and the dosage of general anesthesia, and postoperative sleep disturbance may be related to the effect of anesthesia and surgery on circadian rhythm.Preoperative sleep deprivation is known to be an independent risk factor for postoperative cognitive dysfunction (POCD), but the circadian mechanisms involved after general anesthesia are not yet clear