问题
单项选择题
Trimethobenzamide (Tigan) 150 mg IM has been ordered to treat a client's nausea and vomiting. The nurse has an ampule of Tigan labeled 200 mg/mL. How many mL should the nurse prepare to give the client
A．0.50 mL.
B．0.75 mL.
C．1.0 mL.
D．1.5 mL.
答案
参考答案：B
解析：150mg/x mL=200mg/mL; x=0.75mL.