Definition Succinylcholine (SCh) is a depolarizing neuromuscular-blocking agent, which produce sustained opening of the nicotinic cholinergic receptor channel. Under normal conditions, post-junctional membrane depolarization results in leakage of potassium that produces an increase of 0.5 – 1.0 mEq/L in serum K+ concentration. When SCh depolarizes muscle that has been traumatized (crush injury) or denervated (upper […]