reduction of gastric volume and elevation of gastric ph can be achieved by premedication with glycopyrrolate ( 0.3 mg i.m . ) and preoperative administration of h2-receptor antagonists ( 150 mg ranitidine p.o . 6-8 h and 80 mg i.m./i.v . 60 min before induction ) .
C2757005
h2-receptor antagonists
C0034665
ranitidine