Geriatric patients scheduled to undergo surgery were tested with Mini Mental State Examination (MMSE) in the preoperative visit. MMSE was repeated postoperatively at the 6th hour, the 1st, 3rd, and 7th day. Visual analogue scale (VAS) test was performed simultaneously on the postoperative 6th hour, the 1st, 3rd, and 7th day. Two cohorts were created according to the amount of fresh gas flow (low flow vs high flow) in the maintenance phase of the inhalational anesthetic. MMSE scores were compared between cohorts and baseline. VAS scores were compared between cohorts.
This study aims to investigate the effect of inhaled anesthetics with a low fresh gas flow on cognitive function of elderly patients undergoing elective surgery