Final answer:
The common neuromuscular blocker that may result in malignant hyperthermia is d-tubocurarine. It competitively blocks the action of acetylcholine, resulting in muscle relaxation and paralysis.
Step-by-step explanation:
The common neuromuscular blocker that may result in malignant hyperthermia is d-tubocurarine. It works by competitively blocking the action of acetylcholine, the neurotransmitter responsible for muscle contraction. When d-tubocurarine is applied to the end-plate of a muscle fiber, it renders the muscle cell insensitive to motor-nerve impulses and acetylcholine, leading to muscle relaxation and paralysis.