Patients with all of the following pathologies are candidates for ECMO EXCEPT

• A. Barotrauma
• B. Cystic Fibrosis
• C. Congenital Diaphragmatic Hernia
• D. Severe PPHN

Answer: (B)

ECMO is used when a child has life-threatening, reversible cardiopulmonary failure despite maximal conventional support, serving as a bridge to recovery or to transplant. Among the listed conditions, the ones that fit this scenario are acute, potentially reversible respiratory or cardiopulmonary problems where temporary support can give the lungs or heart time to recover.

Barotrauma represents an acute injury from ventilation. In severe cases, ECMO can provide gas exchange support while the injured lungs rest and heal, making it a potential ECMO candidate.

Congenital diaphragmatic hernia can cause severe, reversible respiratory failure due to underdeveloped or stressed lungs. When traditional ventilation fails to oxygenate adequately, ECMO can sustain the patient while lung growth or stabilization occurs, or while planning surgical repair.

Severe PPHN is a classic situation where ECMO can be life-saving, allowing the pulmonary vasculature to calm and oxygenation to improve during a critical window of reversible pulmonary hypertension.

Cystic fibrosis, on the other hand, is a chronic, progressive lung disease with irreversible structural changes and frequent systemic involvement. ECMO does not address the underlying pathology and outcomes are generally poorer; it is not a standard ECMO candidate for reinforcing recovery in CF, though in exceptional cases it might be considered as a bridge to lung transplantation. In the usual exam context, CF is the condition that does not fit the typical ECMO candidate profile.