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Fever in acute myelogenous leukemia
Abstract:
Implications and course of fever were evaluated during hospitalization of 24 patients with acute myelogenous leukemia. Forty-five febrile episodes were identified. Fever present at admission was usually associated with a diagnosable and treatable infection; fever shortly after induction was self-limited; and fever during granulocytopenia was more likely to be associated with bacteremia. Bacteremia and pneumonia were the most common types of infection. Only Gram-negative bacteria and Candida were identified as causes of infection during life, with Pseudomonas and Klebsiella the most frequently isolated pathogens. Invasive candidiasis was a major postmortem finding. A delay in initiation of empirical treatment beyond the third day of fever was associated with an increase in mortality as was continuation of treatment for longer than 14 days.
Insights
Fever in acute myelogenous leukemia patients often indicates infection. Prompt empirical treatment initiation and duration are critical for improving survival rates in these high-risk patients.
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.