Abstract
To report a case of Klebsiella pneumoniae carbapenemase (KPC)-producing K pneumoniae ventriculitis successfully treated with dual intraventricular plus systemic antibiotic therapy. A 43-year-old woman with a ventriculoperitoneal shunt was transferred from a nursing home with fever, altered mental status, and leukocytosis. She was found to have KPC-producing K pneumoniae ventriculitis. Combination intraventricular antibiotic therapy with colistin and gentamicin plus systemic colistin and amikacin led to the resolution of infection. Utilization of intraventricular or intrathecal antibiotics has been described in the literature for multidrug resistant (MDR) Gram-negative central nervous system (CNS) infections; however, none of the cases were caused by a KPC-producing organism. Given the pathogenicity and limited treatment options for this resistant organism, we utilized intraventricular colistin 10 mg and intraventricular gentamicin 10 mg in combination with systemic colistin and amikacin. An extensive literature search revealed several case reports and case series of documented MDR Acinetobacter baumanii CNS infections successfully treated with intraventricular colistin or aminoglycoside therapy with good tolerability. Additionally, recent pharmacokinetic analyses suggest improved cerebrospinal fluid (CSF) concentrations with direct CNS antimicrobial administration in combination with systemic therapy. Although our patient's cerebral spinal fluid cultures were cleared with dual intraventricular plus systemic therapy, she continued to deteriorate clinically because of her comorbid conditions and required hospice admission. This describes the first reported case of KPC-producing K pneumoniae ventriculitis microbiologically cured based on negative blood and CSF cultures with a combination of intraventricular and systemic therapy.
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