A patient exposed to a chemical develops cyanosis that does not improve as expected with oxygen, and blood appears unusually dark. Which antidote is commonly used for clinically significant methemoglobinaemia?
Correct answer: A. Methylene blue
- A. Methylene blue
- B. Hydroxocobalamin
- C. Protamine sulfate
- D. Glucagon
Explanation
Methylene blue reduces methemoglobin back to functional haemoglobin and is commonly used when symptoms are significant. Hydroxocobalamin is used for suspected cyanide poisoning, protamine reverses heparin, and glucagon is used in selected beta blocker toxicity.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
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.
Practise Emergency Drugs and Antidotes
50 free Emergency Drugs and Antidotes MCQs from Nursing Pharmacology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Nursing Pharmacology questions like this
Nursing Pharmacology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Emergency Drugs and Antidotes questions
A patient who swallowed a large amount of aspirin has tinnitus, rapid breathing and a rising blood pH. Which treatment helps enhance salicylate elimination by alkalinising the urine?
A patient treated with a local anaesthetic during a procedure develops seizures, severe hypotension and a widening QRS complex. Which rescue treatment is associated with local anaesthetic systemic toxicity?
A patient develops seizures, metabolic acidosis and altered consciousness after ingesting a large amount of isoniazid. Which specific antidote should the nurse expect?
A patient in cardiogenic shock has cool clammy skin, a low cardiac output and severe hypotension despite adequate fluid replacement. Which medicine may be used to improve cardiac contractility?
A patient with severe asthma remains wheezy after repeated inhaled bronchodilator treatment. Which medicine may be given intravenously as an additional emergency treatment?
A patient takes a large amount of a calcium channel blocker and develops hypotension, bradycardia and poor cardiac output. Which treatment may support cardiac function in this poisoning?