All of the following statements about neuromuscular blockage produced by succinylcholine are true, Except–: (A) No fade on train of four stimulation, (B) Fade on tetanic stimulation, (C) No post tetanic facilitation, (D) Train of four ratio > 0.4
Answer is B. Fade on tetanic stimulation is a feature of Non-depolarizing blockers.
Succinylcholine characteristically produces a depolarizing neuromuscular block. Depolarizing neuromuscular blockage is characterized by no fade on the train of four or tetanic stimulation, no post-tetanic facilitation and a high train of four ratios>0.7 (>0.4).
Fade on tetanic stimulation is a characteristic feature of non-depolarizing blockage although it may be seen with prolonged administration of succinylcholine as phase II block supervenes.