Succinylcholine is used with caution in all except –: (A) Mysthenia gravis, (B) Burns, (C) Crush injury, (D) Tachycardia
Answer is D. Sch is the only muscle relaxant that causes vagal stimulation → Causes bradycardia. (attenuates tachycardia & hypertension).
In burns, crush injury and mysthenia gravis can cause severe hyperkalemia.