Extracorporeal Membrane Oxygenation for Pneumocystis jirovecii Pneumonia in a Child With Multisystem Langerhans Cell...

Area of Science:

• Pediatric critical care medicine
• Infectious diseases
• Pulmonology

Background:

• Pneumocystis jirovecii pneumonia (PJP) is a severe opportunistic infection in immunocompromised children, often leading to fatal outcomes when progressing to acute respiratory distress syndrome (ARDS).
• The use of extracorporeal membrane oxygenation (ECMO) for PJP-induced ARDS in pediatric patients is not well-established, with limited case reports available.

Purpose of the Study:

• To present a case of severe PJP in a pediatric patient with multisystem Langerhans cell histiocytosis.
• To highlight the successful application of venovenous (V-V) ECMO as a rescue therapy for refractory respiratory failure secondary to PJP.

Main Methods:

• A 3-year-old boy with multisystem Langerhans cell histiocytosis on chemotherapy developed severe PJP with respiratory failure.
• Despite maximal medical management including mechanical ventilation, venovenous (V-V) ECMO was initiated for rescue support.
• Bronchoalveolar lavage confirmed Pneumocystis jirovecii and Klebsiella pneumoniae co-infection.

Main Results:

• The patient showed rapid improvement in gas exchange after V-V ECMO initiation, allowing for decannulation on day 6 and extubation by day 8.
• Radiographic resolution of pneumonia was observed within 2 weeks.
• The child completed treatment, resumed chemotherapy, and remained well at 10-month follow-up with secondary PJP prophylaxis.

Conclusions:

• Early recognition and aggressive supportive care are crucial for managing severe PJP in immunocompromised children.
• In select pediatric patients with isolated, reversible respiratory failure, timely V-V ECMO can be a life-saving measure.
• V-V ECMO can facilitate patient recovery while definitive antimicrobial therapy is administered.