It is thought that a neonatal patient has Stage IV BPD with emphysematous lung changes. What pulmonary function test findings would confirm this?
1) Normal Vt
2) Increased FRC
3) Decreased VC
4) Increased RV

Question

Quizplus · Accepted Answer

Stage IV BPD with emphysematous lung changes is characterized by airway obstruction, hyperinflation, reduced lung compliance, and loss of elastic recoil. Pulmonary function test findings would typically show increased functional residual capacity (FRC) and residual volume (RV), as well as decreased vital capacity (VC) due to air trapping and hyperinflation. However, there may be normal tidal volume (Vt) as this is not affected in BPD. Therefore, options 1 and 3 are not sufficient to confirm Stage IV BPD with emphysematous lung changes, while options 2 and 4 are more indicative.

It Is Thought That a Neonatal Patient Has Stage IV