... considered. The main reasons for givingpremedication are shown in Box 19.5.A variety of drugs including opiates, benzodiazepines,anticholinergics, phenothiazines, and H2receptor blocking drugs areused. ... cornerstone of safe anaestheticpractice and must never be omitted.emedicina (3) Give aminophylline 250–500 mg (4–8 mg/kg) intravenously over 10–15 min.(4) Give epinephrine 0·5–1·0 ml 1:10 000 increments ... learn the principles ofregional anaesthesia at an early stage of your training.The drugs in common use are lignocaine, bupivacaine, and prilocaineand their characteristics are shown in Table...