【名词&注释】
呼吸道(respiratory tract)、稳态血药浓度(steady-state concentration)、二氧化碳吸收器、静脉普鲁卡因复合麻醉(intravenous procaine balanced anesthesi ...)
[单选题]静脉普鲁卡因复合麻醉(intravenous procaine balanced anesthesi)时,普鲁卡因达稳态血药浓度需()
A. 50~60min
B. 20~30min
C. 30~40min
D. 10~20min
E. 5~10min