Which of the following is used for RSI?

• A. Midozolam
• B. All of the above
• C. Succinylcholine
• D. Lidocaine or atropine

Answer: (B)

RSI is a rapid sequence induction that brings together a sedative, an induction agent, and a neuromuscular blocker, often with adjuncts to optimize the airway and hemodynamic response. Midazolam can be used as a sedative adjunct to reduce anxiety and provide amnesia in some RSI protocols, though it is not the primary induction agent. Succinylcholine is the classic rapid-acting paralytic that allows immediate intubation and minimizes the risk of aspiration by quickly securing the airway. Lidocaine or atropine are used as adjuncts: lidocaine can blunt the cough and sympathetic response to laryngoscopy (and help with ICP in some patients), while atropine helps prevent bradycardia that can accompany rapid sequence techniques, especially in children or with certain drugs. Because RSI often employs a combination of these elements depending on the patient and setting, all of these can be used as part of an RSI protocol.