A patient who has taken a large amount of a tricyclic antidepressant develops a wide QRS complex and hypotension. Which emergency treatment is commonly used to reduce cardiac toxicity?
Correct answer: A. Sodium bicarbonate
- A. Sodium bicarbonate
- B. Calcium chloride
- C. Naloxone
- D. Glucagon
Explanation
Intravenous sodium bicarbonate helps narrow the QRS complex and correct sodium-channel blockade in serious tricyclic antidepressant poisoning. Naloxone reverses opioid effects, glucagon is used in selected beta-blocker toxicity, and calcium chloride is not the standard treatment for this poisoning.
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About Emergency Drugs and Antidotes
Emergency pharmacology covers drugs used in cardiac arrest, shock, severe allergy, acute asthma, seizures, poisoning and hypoglycaemia, including adrenaline, atropine, naloxone, flumazenil and selected antidotes. The focus is on indications, routes, rapid adverse effects, dose safety and matching a toxic substance with its specific reversal agent.
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