Cardiology: tetralogy of Fallot: 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: tetralogy of Fallot

Sample item

A cyanotic infant with tetralogy of Fallot becomes acutely more cyanosed and irritable during crying. Which position may help relieve a hypercyanotic spell?

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

The answer and the reasoning

C. Knee-chest position

Knee-chest positioning increases systemic vascular resistance, reducing right-to-left shunting during a tet spell. Oxygen, calming, fluids, and urgent clinical management may also be needed.

Option by option

  • A. Prone with abdominal pressure

    Prone abdominal pressure does not address the shunt physiology.

  • B. Supine with legs flat

    Flat supine positioning does not specifically increase systemic resistance.

  • C. Knee-chest position (correct)

    Correct. Increased systemic resistance can improve pulmonary blood flow.

  • D. Trendelenburg with head down

    Head-down positioning is not the standard maneuver for a tet spell.

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 C, Knee-chest position. Knee-chest positioning increases systemic vascular resistance, reducing right-to-left shunting during a tet spell.

Why is "Prone with abdominal pressure" not the answer?

Prone abdominal pressure does not address the shunt physiology.

Why is "Supine with legs flat" not the answer?

Flat supine positioning does not specifically increase systemic resistance.

Why is "Trendelenburg with head down" not the answer?

Head-down positioning is not the standard maneuver for a tet spell.

What concept does this question test?

It tests Cardiology: tetralogy of Fallot in Pediatrics. Oxygen, calming, fluids, and urgent clinical management may also be needed.

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 Cardiology: tetralogy of Fallot?

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.