Cerebral Oximetry and Anesthetic Technique

Evaluation of the Effects of Spinal Versus General Anesthesia on Transcranial Cerebral Oxygen Saturation in Geriatric Patients Undergoing Total Hip Arthroplasty

The purpose of the study is to compare the effects of spinal and general anesthesia on transcranial regional cerebral oxygen saturation in geriatric patients undergoing total hip arthroplasty.

Geriatric patients who received anesthesia undergoing total hip arthroplasty were randomized by means of a computer-generated randomization order into two groups; general anesthesia group (Group 1) and spinal anesthesia group (Group 2). Before and after induction of the general or spinal anesthesia, patients were monitorized with near infrared spectroscopy for regional cerebral oxygen saturation. Findings were compared statistically.

Inclusion Criteria:

• patients who undergo elective total hip arthroplasty
• American Society of Anesthesiologists class 1 to 3
• Ability to consent

Exclusion Criteria:

• Pulmonary disease
• History of allergic reaction to local anaesthetics
• Peripheral neuropathy
• Neurologic disease
• Coagulation disorders