Assessment of Antifungal Therapy in an 800-Gram Infant with Candidal Arthritis and Osteomyelitis

¹ Departments of Pediatrics, Internal Medicine, Microbiology, and Pharmacology, The Milton S. Hershey Medical Center, The Pennsylvania State University, Hershey

A 720-g premature newborn developed disseminated candidiasis during treatment with systemic antibiotics and total parenteral nutrition through an umbilical arterial catheter. Clinical features were typical for candidal skeletal infection at this age and included warmth and fusiform swelling of the lower extremities together with radiographic evidence of osteolysis and cortical bone erosion. Candida albicans was cultured from blood, urine, joint fluid, and a bone aspirate. The infection was cured with a 44-day course of amphotericin B and flucytosine (5-fluorocytosine). Antifungal therapy was monitored closely with serum drug levels and laboratory tests for bone marrow toxicity and renal dysfunction. Serum levels of both drugs were comparable to those achieved in older patients treated with similar doses. Significant concentrations of amphotericin B were detected in serum four and 17 days after completion of therapy, indicating a slow rate of elimination similar to that which occurs in adults. There was no evidence of drug-induced toxicity other than transient elevation in the fractional urinary excretion of sodium. This suggests that antifungal therapy may be effectively and safely administered to infants in dose schedules similar to those used for older patients.

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