??

1.??? 2.????????????<40/min???????????????<40/min??????25mg35/d10mg???2~6h 1lmg5?500m1? ??????5?100~200ml1.87mol4060ml?? 3.??-???????? 4.????????????????????????????????????? 5.???????????????????? ???QRS??????????? 6.????40??????????510mg?4??????????1-4ug????1????4??510mg??003g34/d????-??05mg?????6070min????????-????\"??\"
2??4??03mg???????????46?0510mg
3?????????????????????????????