The Effects of Total Intravenous Anesthesia and Inhalational Anesthesia on Postoperative Cognitive Functions in Patients Undergoing Sleeve Gastrectomy
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 发起方
- 入组人数
- 60
- 试验地点
- 1
研究概览
简要总结
In this study, the investigators want to examine the effects of intravenous anesthetic drugs and gases on cognitive functions in the postoperative period in individuals who will undergo surgery for obesity. The investigators believe that the anesthesia method we apply with inhalation gases is also as reliable method as total intravenous anesthesia for postoperative cognitive functions in these patients who undergoe sleeve gastrectomy.
The anesthesia method applied intravenously and with inahalational gases have been applied safely for many years. Comparisons between these two anesthesia technics in obese individuals and for postoperative cognitive dysfunctions are limited.
Studies on the examination of cognitive functions in postoperative patients have gained momentum with the use of neuropsychiatric tests performed on patients who have undergone cardiac surgery and these tests have also been performed on individuals who have undergone non-cardiac surgery. And yet, similar declines in cognitive functions have been observed. For these reasons, the effects of surgery itself and anesthesia methods on cognitive functions have been studied up to date.
In this study, the investigators plan to evaluate patients who will undergo obesity surgery in both anesthesia methods by the recovery times from anesthesia and the residual effects of anesthesia, and after awakening they plan to evaluate their cognitive functions with neuropsychiatric tests that will be performed at certain intervals.
详细描述
The aim of this study is to investigate the effects of TIVA (Total Intravenous Anesthesia) and inhalational anesthesia on postoperative cognitive functions in patients undergoing sleeve gastrectomy as a bariatric surgery, to determine the residual effects of anesthetic drugs and to determine recovery times, to observe mental changes caused by the anesthesia method and surgical intervention, to evaluate postoperative cognitive functions with neurocognitive tests, and to try to determine the most appropriate anesthesia method for the patient as the method with faster recovery, better patient comfort and less cognitive function changes. The investigators think that they can safely choose inhalation anesthesia, like TIVA, in patients who will undergo obesity surgery.
The relationships between the choice of anesthesia method and the recovery in obese patients remain unclear. Obesity-related physiological changes, such as increased cardiac output, may affect the pharmacokinetics of anesthetic agents by increasing the volume of distribution and clearance of the drug. However, it is difficult to assess the extent of these changes. In fact, no significant clinical difference has been shown in terms of recovery times between obese and non-obese patients anesthetized with inhalation agents in clinical studies.
TIVA and inhalational anesthesia have been used safely up to date, and both are routinely used in patients undergoing laparoscopic bariatric surgery. Although TIVA was once seen as a promising alternative to inhalational anesthesia; in morbidly obese patients with different clinical and metabolic profiles, the high lipid solubility and slow metabolic elimination of intravenous anesthetics, in addition to manual administration of these drugs, are limited even in computer-controlled automated systems such as TCI (Target Controlled Infusion) devices and CLADS (Closed Loop Anesthesia Delivery System) designed to provide predefined plasma concentrations based on patient response and multi-compartmental pharmacokinetic algorithms.
In another study conducted to determine the optimum anesthesia method in obese patients, TIVA and inhalational anesthesia were applied in sleeve gastrectomy, and TIVA showed better recovery, lower pain scores, lower incidence of postoperative nausea and vomiting, and shorter PACU (Post Anesthesia Care Unit) stay.
A consensus group was formed to develop terminology similar to that used in cognitive classifications of the general population to be used in the investigation of cognitive function changes after anesthesia and surgery. This working group suggested using the term "POND"(Perioperative Neurocognitive Disorders) as a comprehensive term for cognitive disorders defined in the preoperative and postoperative periods, and decided to call the cognitive decline present in the preoperative period "NCD" (Neurocognitive Disorder), the form defined as a clear and acute event within the first 7 days after the effects of postoperative surgery and anesthesia excluded as "Postoperative Delirium", the cognitive decline observed in the time period up to 30 days after surgery "Delayed Neurocognitive Recovery" and the form observed up to 12 months "POCD" (Postoperative Cognitive Dysfunction).
研究设计
- 研究类型
- Observational
- 观察模型
- Other
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patients of both sexes, Patients Aged between 18 and 65 years, Patients classified as ASA(American Society of Anesthesiologists) physical status I- III, Patients with a BMI (Body Mass Index) between 35 and 50 kg/m² scheduled to undergo sleeve gastrectomy as a type of bariatric surgery for the first time.
排除标准
- •Patients classified as ASA physical status 4 or high, Patients with known allergy to any of the drugs used in the study, Patients with bleeding disorders, Patients with serum creatinine levels >2 mg/dL, Patients with severe arrhythmias and EF<30%, Patients with a known history of drug abuse are excluded.