High-Dose Cytosine Arabinoside and Viridans Streptococcus Sepsis in Children with Leukemia

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Abstract
We report three cases of fulminant sepsis due to viridans streptococci in leukemic children treated with high-dose cytosine arabinoside (Ara-C). The major predisposing factors to this occurrence are the presence of oropharingeal mucositis, which is the entry of streptococci into the bloodstream, and the use of antibiotic prophylactic regimens against gram-negative bacteria. In order to avoid fatal events during viridans streptococci sepsis, specific measures such as penicillin prophylaxis or early antibiotic treatment are needed. We suggest that the prompt empiric use of a glycopeptide antibiotic in addition to the conventional association of a β-lactam plus an aminoglycoside may significantly decrease the mortality rate due to fulminant streptococci sepsis while the patient is severely neutropenic. In this regard, our current policy considers the addition of an anti-gram-positive antibiotic to the first-choice fever treatment in neutropenic patients who have received high-dose Ara-C.