Question

The nurse knows that the only depolarizing blocker is succinylcholine(Anectine), which works by binding to acetycholine receptors at neuromuscular junctions causing:

a. total skeletal muscle relaxation.
b. Prevention of muscle contractions.
c. loss of consciousness.
d. light sedation.

Answer 1

Succinylcholine causes total skeletal muscle relaxation option (a) by continuously depolarizing muscle cells, which leads to their paralysis.

Step-by-step explanation:

The nurse knows that the only depolarizing blocker is succinylcholine (Anectine), which works by binding to acetylcholine receptors at neuromuscular junctions causing total skeletal muscle relaxation option (a). This is because succinylcholine acts as an agonist at the acetylcholine receptors, leading to continuous depolarization, and resulting in paralysis. Drugs similar to succinylcholine like d-tubocurarine and botulinum toxin (BONT) affect muscle contraction through interference with acetylcholine. D-tubocurarine blocks the action of acetylcholine at neuromuscular junctions, while botulinum toxin inhibits the release of acetylcholine, both leading to muscle relaxation and paralysis.