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Durations of action

posted Nov 24, 2009, 12:44 AM by 藥物教育資源中心DERC

(Originally posted on 2004-06-13)

Mydriatics (Long acting)

DrugDuration of actionTmax
Atropine7-10 days30-40 minutes

Mydriactics (Intermediate acting)

DrugDuration of actionTmax
Cyclopentolate1 day15-30 minutes
Homatropine1-2 days40-60 minutes

Mydriatics (Short acting)

DrugDuration of actionTmax
Phenylephrine5-7 hours60-90 minutes
Tropicamide6-9 hours15-30 minutes


DrugDuration of actionTmax
Pilocarpine4-6 hours30 minutes

Muscle relaxants for surgery

DrugDuration of actionDosage
Suxamethonium3-5 minutes0.3-1.1 mg/kg
MivacuriumAbout 10 minutes0.2-0.25 mg/kg
Atracurium15-35 minutes0.3-0.6 mg/kg
Vencuronium20-30 minutes0.08-0.1 mg/kg
Gallamine15-20 minutes80-120 mg
Pancuronium60 minutes0.08-0.1 mg/kg
Tubocurarine30 minutes15-30 mg/kg