Effects of remifentanil dose on surgical conditions during endoscopic sinus surgery

Abstract

Abstract Background The combination of propofol and remifentanil results in better surgical field conditions during endoscopic sinus surgery than inhalation anaesthesia. This study compared surgical field conditions between groups receiving low or high concentration of remifentanil. Methods Fifty-four patients, ASA I or II were used to assign the patients to either the high-concentration remifentanil group (HR), targeted at 8 ng/mL or the low-concentration remifentanil group (LR), target was 4 ng/mL Surgical condition was evaluated using the Boezaart Surgical Field Grading Scale presented by Boezaart. Discussion When comparing the HR group and the LR group, the surgeon observed a significant difference in surgical conditions. The reason was the significant decrease in cardiac output. This reduction was because of the effect of remifentanil on reducing heart rate rather than stroke volume. Trial Registration Clinical Trial Registry of the Republic of Korea (KCT0006453)