Early Cognitive Function in Elderly Patients After Laser Laryngeal Surgery: Des vs Prop
Status:
Unknown status
Trial end date:
2019-12-01
Target enrollment:
Participant gender:
Summary
Postoperative cognitive impairment is one of the most common complications in elderly
surgical patients. Laser laryngeal surgery is a short procedure, but characterized by high
risk of disastrous airway fire. So the recommended oxygen concentration is less than 30%. For
elderly patients, because of preoperatively declined cardiovascular and lung function and
cognitive function, there is a potential that intraoperative low oxygen concentration may
lead to drop of arterial oxygen tension, decrease of brain oxygenation, and exacerbate brain
function impairment. Intravenous anesthesia and inhalation anesthesia is two commonly used
technique for general anesthesia. Consequently, we carry out this study to identify whether
different classes of anesthetics can affect postoperative cognitive function in old patient
undergoing laser laryngeal surgery.