Which statement about neuromuscular blockers is true?

Which statement about neuromuscular blockers is true?

• A. They provide analgesia
• B. They cause paralysis of voluntary skeletal muscles and are usually used with a ventilator
• C. They are used without anesthesia
• D. They enhance anesthetic depth on their own

Answer: (B)

Neuromuscular blockers produce paralysis by interrupting transmission at the neuromuscular junction, so the patient cannot move skeletal muscles. Because this includes the muscles used for breathing, these drugs are used only during general anesthesia with mechanical ventilation to control ventilation and prevent movement during the procedure. They do not provide analgesia or alter consciousness, and they do not deepen anesthesia on their own. Adequate anesthesia and analgesia must be maintained separately, and ventilation is supported until the block wears off or is reversed. Monitoring of the block helps ensure appropriate paralysis without risking awareness or under- or over-paralysis.

Neuromuscular blockers produce paralysis by interrupting transmission at the neuromuscular junction, so the patient cannot move skeletal muscles. Because this includes the muscles used for breathing, these drugs are used only during general anesthesia with mechanical ventilation to control ventilation and prevent movement during the procedure. They do not provide analgesia or alter consciousness, and they do not deepen anesthesia on their own. Adequate anesthesia and analgesia must be maintained separately, and ventilation is supported until the block wears off or is reversed. Monitoring of the block helps ensure appropriate paralysis without risking awareness or under- or over-paralysis.