Certified Transport Registered Nurse Certification Practice Exam

Which agent is categorized as a non-depolarizing neuromuscular blocker?

1. Succinylcholine

2. Dantrolene

3. Rocuronium

4. Propofol

The correct answer is: Rocuronium

Rocuronium is categorized as a non-depolarizing neuromuscular blocker, which is a critical aspect of its pharmacological classification. Non-depolarizing neuromuscular blockers function by competitively inhibiting the action of acetylcholine at the neuromuscular junction, which prevents muscle contraction. This is particularly useful during surgical procedures requiring muscle relaxation. Rocuronium is known for its rapid onset and intermediate duration of action, making it a popular choice in various clinical settings, including intubation and surgical relaxations. Its mechanism of action allows for precise control over neuromuscular function, facilitating smoother anesthetic management. In contrast, the other agents listed serve different purposes: Succinylcholine is a depolarizing neuromuscular blocker that causes muscle paralysis by mimicking acetylcholine, while Dantrolene is used primarily for treating malignant hyperthermia and acts on muscle contractility rather than neuromuscular transmission. Propofol, an anesthetic agent, does not interact with neuromuscular blockers at all but instead induces and maintains general anesthesia. Understanding the distinct roles and classifications of these agents enhances the safe and effective management of patients during anesthesia and surgical procedures.