Succinylcholine is used with caution in all except: (A) Mythenia gravis, (B) Burns, (C) Crush injury, (D) Tachycardia
Answer is D. Sch is the only muscle relaxant that causes vagal stimulation and causes bradycardia (attenuates tachycardia and hypeension ) In burns, crush injury and myasthenia gravis can cause severe hyperkalemia. Ref: Morgan 4th/e p 214