Cardiovascular drugs: practice question

A Pharmacology question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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Pharmacology · Cardiovascular drugs

Sample item

What electrolyte disturbance increases digoxin toxicity risk?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

A. Hypokalaemia

Hypokalaemia increases digoxin binding to sodium-potassium ATPase and raises risk of arrhythmia and toxicity, especially with diuretics.

Option by option

  • A. Hypokalaemia (correct)

    Correct: low potassium potentiates digoxin effect.

  • B. Hypernatraemia

    Sodium is not the main interaction.

  • C. Hypermagnesaemia only

    Magnesium status is not this classic answer.

  • D. High chloride

    Chloride is not key.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

More Pharmacology questions

Questions about this Pharmacology question

What is the answer to this Pharmacology question?

The best answer is A, Hypokalaemia. Hypokalaemia increases digoxin binding to sodium-potassium ATPase and raises risk of arrhythmia and toxicity, especially with diuretics.

Why is "Hypernatraemia" not the answer?

Sodium is not the main interaction.

Why is "Hypermagnesaemia only" not the answer?

Magnesium status is not this classic answer.

Why is "High chloride" not the answer?

Chloride is not key.

What concept does this question test?

It tests Cardiovascular drugs in Pharmacology. The correct option holds because: Correct: low potassium potentiates digoxin effect.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Cardiovascular drugs?

Learn drugs as classes, then the exception in each class that an examiner would pick. Then use the flashcards and the other Pharmacology questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.