Rocuronium is a medication used as a neuromuscular blocker during surgical procedures. It works by blocking the transmission of nerve impulses to the muscles, leading to temporary paralysis. This allows surgeons to perform operations without involuntary muscle movements. The drug is typically administered intravenously and has a rapid onset of action, making it useful in emergency situations. Rocuronium is often preferred for its shorter duration compared to other neuromuscular blockers, allowing for quicker recovery of muscle function after surgery.