T2Bacteria® Negative De-escalation

67-year-old female admitted for reduced intensity conditioning followed by Stem Cell transplant for acute myelogenous leukemia.

Discussion

Patients undergoing cytotoxic chemotherapy and hematopoietic stem-cell transplantation (HSCT) are at high risk for infection, particularly during the period of neutropenia and are often prescribed antibiotic prophylaxis with fluroquinolones. The majority of patients who develop fever during neutropenia have no identifiable site of infection and no positive culture results. IDSA guidelines recommend that every patient with fever and neutropenia receive empiric antibiotic therapy with an antipseudomonal beta lactam urgently after presentation, because infection may progress rapidly.1

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Thrombus in Left Popliteal Artery

Patient presented with acute onset of pain in his left lower extremity

Discussion

Rapid molecular diagnostics such as T2MR technology may help with prognosis of invasive candidiasis. The T2Candida Panel was utilized upon follow up to assess the clearance of candidemia along with clinical symptoms.

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Neutropenic Fever & P. aeruginosa Bloodstream Infection

A 23-year-old female with a history of acute myeloid leukemia and recent haploidentical stem cell transplant, cytokine release syndrome and severe mucositis following receipt of post-transplant cyclophosphamide therapy.

Discussion:

Upon admission, the patient was initially given cefepime for the treatment of febrile neutropenia. Due to the patient’s history of AML and neutropenia, she was at risk for organisms such as P. aeruginosa in addition to other common causes of febrile neutropenia such as Enterobacteriaceae.

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