Results
allergies
ALLERGIES
From January 2022 to November 2022, 240 ASA I-III patients aged from 60 to 85 who were scheduled for elective non-cardiac surgery under general anesthesia were enrolled, of which 40 patients were excluded due to contraindications (n = 18), allergies (n = 12) or declined to participate (n = 10). 200 patients completed randomization and participated in the study. 4 patients were excluded due to protocol violation (3 in NS group and 1 in 20 µg/kg group B). The number of patients included in the final statistical analysis was 196 (Fig. 
CONSORT 2010 flow diagram. (adapted from 