Disseminated organ and tissue infection secondary to carbapenem-resistant Klebsiella pneumoniae bloodstream infection for acute lymphoblastic leukemia treated with ceftazidime-avibactam: Two case reports.

Rationale: Carbapenem-resistant Klebsiella pneumoniae (CRKP) bloodstream infections are a severe complication resulting from granulocyte deficiency following chemotherapy for hematologic malignancies and have a high mortality rate. However, reports of disseminated organ infections secondary to bloodstream infections are rare.

Patient Concerns And Diagnoses: We report 2 cases of patients with acute lymphoblastic leukemia who both developed CRKP bloodstream infections during the granulocyte deficiency stage following chemotherapy, with 1 case of secondary bacterial liver abscess and 1 case of secondary septic arthritis.

Interventions And Outcomes: Based on the results of drug sensitivity testing, both patients were treated with ceftazidime-avibactam, and the infections were rapidly and effectively controlled without significant adverse effects.

Lessons: Ceftazidime-avibactam exhibited satisfactory efficacy and safety in the 2 cases of disseminated organ infection secondary to CRKP bloodstream infection following chemotherapy for acute lymphoblastic leukemia.