Abstract

Vancomycin has been reported to cause vancomycin flushing reaction (VFR), a hypersensitivity reaction that mostly occurs after intravenous administration. The incidence of VFR in a patient receiving intraperitoneal vancomycin is rare. We report a case of a female peritoneal dialysis (PD) patient with a PD-related peritonitis who developed VFR after intraperitoneal administration of 2000 mg vancomycin. Seventy-five minutes after instillation, she developed flushing, a pruritic erythema on the upper body and swelling of the lips. Blood results revealed a vancomycin plasma concentration of 54.8 mg/L and a normal tryptase level. During a relapse of her PD-related peritonitis, vancomycin was successfully reintroduced in a 50% reduced dose. No symptoms of VFR developed, and the corresponding vancomycin plasma concentration was 33.6 mg/L. Intraperitoneal treatment was continued with 500 mg vancomycin every 2-3 days with frequently measured, adequate trough levels ranging from 15-22 mg/L. This case illustrates the risk factors for the development of VFR after intraperitoneal administration of vancomycin, namely a high and concentrated loading dose together with a low body weight, a fast peritoneal transport state and peritonitis. Reintroduction of vancomycin after occurrence of VFR is safe, but a lower loading dose or a slower instillation rate is recommended.

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