Clindamycin-Associated Hyperphosphatemia in a Child with Renal Dysfunction

Objective:To report a case of hyperphosphatemia associated with administration of intravenous clindamycin phosphate in a child with renal dysfunction.Case Summary:We describe the case of a 12-year-old boy who developed hyperphosphatemia while receiving intravenous clindamycin phosphate. The child had a history of asthma but was otherwise healthy. He was transferred to our facility for management of methicillin-resistant Staphylococcus aureus bacteremia, periorbital cellulitis, osteomyelitis, and necrotizing pneumonia. He received intravenous vancomycin and clindamycin 930 mg administered every 8 hours. Concurrently, he developed acute kidney injury. His baseline phosphorus concentration was within the normal range but increased as high as 11.7 mg/dL while he received clindamycin. Despite receiving oral phosphate binder therapy and a low phosphorus diet, he had little reduction in serum phosphorus values. Intravenous clindamycin was suspected as a potential cause for hyperphosphatemia, and a recommendation...