Fever in acute myelogenous leukemia

Area of Science:

• Oncology
• Infectious Diseases
• Hematology

Background:

• Fever is a common complication in patients with acute myelogenous leukemia (AML).
• Understanding the causes and implications of fever is crucial for managing AML patients during hospitalization.
• Febrile episodes in AML patients can be associated with various infections and treatment-related factors.

Purpose of the Study:

• To evaluate the implications and course of fever during hospitalization in patients with acute myelogenous leukemia (AML).
• To identify common infections, pathogens, and their association with fever patterns in AML.
• To determine the impact of empirical treatment timing on mortality in febrile AML patients.

Main Methods:

• Retrospective analysis of 24 hospitalized patients with acute myelogenous leukemia (AML).
• Identification and characterization of 45 febrile episodes.
• Correlation of fever timing, duration, and treatment with infection types, pathogens, and mortality.

Main Results:

• Fever at admission often indicated a treatable infection, while post-induction fever was self-limited.
• Fever during granulocytopenia was strongly linked to bacteremia.
• Gram-negative bacteria (Pseudomonas, Klebsiella) and Candida were primary pathogens; invasive candidiasis was a significant postmortem finding.
• Delayed empirical treatment (>3 days) and prolonged treatment (>14 days) were associated with increased mortality.

Conclusions:

• Fever patterns in AML patients provide critical clues to underlying infections.
• Timely initiation of empirical treatment is vital for reducing mortality in febrile AML patients.
• Optimizing the duration of empirical treatment is essential for improving outcomes in AML.