Which statement best describes pediatric idiopathic pulmonary hypertension?

• A. It is common in children.
• B. It is unlikely to be seen in children.
• C. It never causes right heart failure.
• D. It always presents with a loud P2.

Answer: (B)

Pediatric idiopathic pulmonary hypertension is rare in children. In kids, pulmonary hypertension more often stems from congenital heart disease, lung disease, or systemic conditions, so the idiopathic form is an uncommon finding. That’s why the statement that it is unlikely to be seen in children best describes the situation.

The other ideas aren’t accurate: while elevated pulmonary pressures can indeed change the heart’s dynamics, idiopathic pulmonary hypertension can still lead to right-sided heart strain and even failure as it progresses; and a loud P2 is a feature that may be present but is not universal, so saying it always presents with a loud P2 isn’t correct.