Early Cognitive Function in Elderly Patients After Laser Laryngeal Surgery: Des vs Prop

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.

Timeline

Start

2017-08-15

Primary completion

2019-06

Completion

2019-12

Publications

• Background Evered L, Scott DA, Silbert B, Maruff P. Postoperative cognitive dysfunction is independent of type of surgery and anesthetic. Anesth Analg. 2011 May;112(5):1179-85. doi: 10.1213/ANE.0b013e318215217e. Epub 2011 Apr 7.
• Background Larsen B, Seitz A, Larsen R. Recovery of cognitive function after remifentanil-propofol anesthesia: a comparison with desflurane and sevoflurane anesthesia. Anesth Analg. 2000 Jan;90(1):168-74. doi: 10.1097/00000539-200001000-00035.
• Background Royse CF, Andrews DT, Newman SN, Stygall J, Williams Z, Pang J, Royse AG. The influence of propofol or desflurane on postoperative cognitive dysfunction in patients undergoing coronary artery bypass surgery. Anaesthesia. 2011 Jun;66(6):455-64. doi: 10.1111/j.1365-2044.2011.06704.x. Epub 2011 Apr 18.
• Background Roy S, Smith LP. Surgical fires in laser laryngeal surgery: are we safe enough? Otolaryngol Head Neck Surg. 2015 Jan;152(1):67-72. doi: 10.1177/0194599814555853. Epub 2014 Oct 24.

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