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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Bradycardia is common after injection of:
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The correct answer is  Ans. (B) Succinylcholine(Ref: KDT 8th/e p378)Succinylcholine is a depolarizing neuromuscular blocker. In contrast to ganglionic blocking properties of competitive neuromuscular blockers (like d-TC), it stimulates the ganglia.Initially bradycardia is seen due to stimulation of parasympathetic ganglion which is followed by tachycardia and hypertension due to stimulation of sympathetic ganglia.Dopamine and isoprenaline possess b1 agonistic activity and thus can cause tachycardia.Midazolam is a benzodiazepine. It does not affect CVS at therapeutic dose but produces bradycardia at toxic levels.