Objective
To evaluate the prevalence of fungal infections (both pre- and post-cannulation) while on extracorporeal membrane oxygenation (ECMO) support and the associated morbidity and mortality.
Design
Retrospective cohort study.
Patient and Methods
The Extracorporeal Life Support Organization (ELSO) database is an international voluntary registry of clinical data for patients placed on ECMO. The database was queried for all patients on ECMO from 1997–2009. Patient and ECMO data collected included age, support type, length of support, infection status and organism code, discharge status, complications and component failures. Outcomes of interest were mortality, ECMO related patient complications, and mechanical component failures.
Results
From 1997–2009, there were 21,073 patient ECMO runs analyzed of which 12,933 were in the neonatal group (0–30 days), 6,073 were in the pediatric group (31 days-< 18 years old), and 2,067 were in the adult group (≥ 18 years). The prevalence of fungal infection during ECMO varied by age group and timing of infection and ranged from 0.04% to 5%. Fungal infections pre- and on-ECMO conferred a statistically significant higher relative risk of mortality for all age groups and varied by support type and timing of infection. ECMO related complications and component failures were not statistically significantly affected by infection status.
Conclusions
Fungal infection before or during ECMO increases the odds of mortality and the magnitude of this effect is dependent upon age-group and timing of infection. This increased mortality was not the result of increased patient or mechanical complications during ECMO. For patients with fungal infections pre-ECMO, 82–89% demonstrated presumed clearance during ECMO. Although the risk of mortality increased with fungal infections, it does not appear that fungal infection before or during ECMO is a contraindication to initiation or continuation of support.