Nitrofurantoin-induced agranulocytosis
Vanessa Lopes1, Joana Ramos2, Patrícia Dias2
1Cardiology Department, Centro Hospitalar e Universitário de Coimbra EPE, Coimbra, Portugal vlopes.pt@gmail.com.
Abstract:
Idiosyncratic drug-induced agranulocytosis is a rare life-threatening adverse reaction characterised by an absolute neutrophil count <500 cells/μL of blood. Nitrofurantoin has been associated with haematological adverse events, but few agranulocytosis cases worldwide have been reported. We present a case of a 68-year-old woman who presented with fever and agranulocytosis following treatment with nitrofurantoin. Extensive workup for agranulocytosis, including a bone marrow aspirate, was unremarkable. Treatment with nitrofurantoin was discontinued, which led to a complete recovery of the complete blood count. This case stresses the importance of monitoring treatments, given that widely used drugs are not free from severe adverse reactions.
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