Cardiology: TAPVC: 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: TAPVC

Sample item

A cyanosed infant has chest X-ray showing a figure-of-eight or snowman heart. Which condition is suggested?

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

The answer and the reasoning

A. Supracardiac total anomalous pulmonary venous connection

In supracardiac TAPVC the pulmonary veins drain through a vertical vein to the left innominate vein and the superior vena cava, giving a snowman appearance. Mixing at an ASD is mandatory for survival. Obstructed infracardiac types have severe pulmonary oedema.

Option by option

  • A. Supracardiac total anomalous pulmonary venous connection (correct)

    Correct. A snowman heart suggests supracardiac TAPVC.

  • B. Tetralogy of Fallot

    Fallot has a boot-shaped heart.

  • C. Coarctation of the aorta

    Coarctation shows rib notching in older children.

  • D. Tricuspid atresia

    Tricuspid atresia has left axis deviation and decreased pulmonary flow.

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 A, Supracardiac total anomalous pulmonary venous connection. In supracardiac TAPVC the pulmonary veins drain through a vertical vein to the left innominate vein and the superior vena cava, giving a snowman appearance.

Why is "Tetralogy of Fallot" not the answer?

Fallot has a boot-shaped heart.

Why is "Coarctation of the aorta" not the answer?

Coarctation shows rib notching in older children.

Why is "Tricuspid atresia" not the answer?

Tricuspid atresia has left axis deviation and decreased pulmonary flow.

What concept does this question test?

It tests Cardiology: TAPVC in Pediatrics. Mixing at an ASD is mandatory for survival. Obstructed infracardiac types have severe pulmonary oedema.

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: TAPVC?

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.