Cardiology: duct-dependent lesions: practice question

A Pediatrics 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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Pediatrics · Cardiology: duct-dependent lesions

Sample item

A newborn with critical coarctation becomes shocked and acidotic after the ductus arteriosus closes. Which infusion can maintain ductal patency while definitive care is arranged?

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

The answer and the reasoning

B. Prostaglandin E1

Prostaglandin E1 keeps the ductus arteriosus open in duct-dependent congenital heart disease and can restore systemic or pulmonary blood flow. It requires monitored use because apnea is a recognized adverse effect.

Option by option

  • A. Digoxin

    Digoxin does not reopen the ductus.

  • B. Prostaglandin E1 (correct)

    Correct. Prostaglandin E1 maintains ductal flow.

  • C. Indomethacin

    Indomethacin promotes ductal closure.

  • D. Furosemide

    Furosemide treats fluid overload, not ductal patency.

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.

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Questions about this Pediatrics question

What is the answer to this Pediatrics question?

The best answer is B, Prostaglandin E1. Prostaglandin E1 keeps the ductus arteriosus open in duct-dependent congenital heart disease and can restore systemic or pulmonary blood flow.

Why is "Digoxin" not the answer?

Digoxin does not reopen the ductus.

Why is "Indomethacin" not the answer?

Indomethacin promotes ductal closure.

Why is "Furosemide" not the answer?

Furosemide treats fluid overload, not ductal patency.

What concept does this question test?

It tests Cardiology: duct-dependent lesions in Pediatrics. It requires monitored use because apnea is a recognized adverse effect.

How hard is this question?

We tag it as a multi-step question: it asks you to combine more than one idea. 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 Cardiology: duct-dependent lesions?

Memorise milestones and the vaccine schedule as tables and revise them often. Then use the flashcards and the other Pediatrics 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.