Infections in acute leukemia: an analysis of 240 febrile episodes
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Infections are the major cause of morbidity and mortality in acute leukemia patients. Case records of 91 consecutive patients (AML-48, ALL-40, RAEB-t/AML-3) treated between January 1997 and July 1999 were studied to determine the type, frequency and severity of infections. Patients' median age was 36 y (range 6–66) and male to female ratio was 2.5:1. A total of 240 febrile episodes were recorded; of them, 162 were associated with neutropenia (absolute neutrophil count, ANC<500/mm3) and 78 were without neutropenia.
Among the neutropenic episodes, an infectious etiology could be documented in 52%; the remainder (485) were defined as isolated febrile episodes. Chest was the most common site of infection (35.7%) followed by skin, soft tissue (13%), GIT (7%) and genitourinary tract (6%) infections in order of decreasing frequency. Microbiologically, gram positive organisms (staphylococcus aureus, coagulase negativestaphylococcus, streptococcus, enterococcus) were the most common isolates (52.8%) followed by gram negative organisms (E. coli, klebsiella, pseudomonas) in 42.8% of isolates. Two patients had pulmonary tuberculosis and three patients had fungal infections (candida—2,aspergillus—1).
Among non-neutropenic patients, infection could be documented in 36%; the remaining 64% were isolated febrile episodes. Gram negative infections were documented in 50%, gram positive in 305 and fungal infections (candia—4,aspergillus—1,mucormycosis—1) in 20% of them.
A combination of third generation cephalosporin and an aminoglycoside were used in 79% of episodes initially; a combination of a newer, penicillin and aminoglycoside (4.6%), double betalactums (4.1%), oral, antibiotics (9.8%) and others were used in the remaining episodes. Fever resolved in 38%, of episodes using the above combinations; in the remainder second line antibiotics (mainly vancomycin) and antifungals (amphotericin-B) were added empirically or depending on culture and sensitivity. In 52.5% of episodes fever resolved after addition of second line antibiotics and antifungals. 11 of 91 patients died of infectious complications in this study. There is a need for improvised diagnostic tests to detect infections early, as well as for new therapies to overcome antimicrobial resistance.
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- Infections in acute leukemia: an analysis of 240 febrile episodes
Volume 17, Issue 2 , pp 111-116
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- acute leukemia
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- Author Affiliations
- 1. Department of Medical Oncology, Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, 110 029, New Delhi, India
- 2. Department of Microbiology, Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India
- 3. Department of Medical Radiology, Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India