Although mortality from febrile neutropenia has steadily declined, the condition is still associated with considerable morbidity and mortality. Approximately 20% to 30% of patients with febrile neutropenia present with complications that require in-hospital management.[59]Klastersky J, de Naurois J, Rolston K, et al. Management of febrile neutropaenia: ESMO Clinical Practice Guidelines. Ann Oncol. 2016 Sep;27(5 suppl):v111-8.
https://www.annalsofoncology.org/article/S0923-7534(19)31643-6/fulltext
http://www.ncbi.nlm.nih.gov/pubmed/27664247?tool=bestpractice.com
A retrospective study of cancer patients hospitalized with febrile neutropenia found an overall in-patient mortality of 9.5%.[12]Kuderer NM, Dale DC, Crawford J, et al. Mortality, morbidity, and cost associated with febrile neutropenia in adult cancer patients. Cancer. 2006 May 15;106(10):2258-66.
https://onlinelibrary.wiley.com/doi/full/10.1002/cncr.21847
http://www.ncbi.nlm.nih.gov/pubmed/16575919?tool=bestpractice.com
Length of hospital stay for high-risk patients
Approximately 80% of patients admitted with their first episode of febrile neutropenia will be hospitalized for anywhere from 1 to 10 days (40% <5 days, 42% 5 to 10 days) with a median hospital stay of 11.21 days. The length of hospital stay appears to increase with repeated episodes.[92]Lyman GH, Kuderer NM. Filgastrim in patients with neutropenia: potential effects on quality of life. Drugs. 2002;62 Suppl 1:65-78.
http://www.ncbi.nlm.nih.gov/pubmed/12479595?tool=bestpractice.com
[93]Lyman GH, Kuderer N, Greene J, et al. The economics of febrile neutropenia: implications for the use of colony-stimulating factors. Eur J Cancer. 1998 Nov;34(12):1857-64.
http://www.ncbi.nlm.nih.gov/pubmed/10023306?tool=bestpractice.com
Length of hospital stay and complications from febrile neutropenia are also associated with age >65 years, advanced stage of disease, duration and magnitude of neutropenia, pre-existing organ dysfunction and comorbid conditions, impaired performance status, and low serum albumin.[3]Klastersky J, Paesmans M, Rubenstein EB, et al. The Multinational Association for Supportive Care in Cancer risk index: a multinational scoring system for identifying low-risk febrile neutropenic cancer patients. J Clin Oncol. 2000 Aug;18(16):3038-51.
http://www.ncbi.nlm.nih.gov/pubmed/10944139?tool=bestpractice.com
[25]Talcott JA, Finberg R, Mayer RJ, et al. The medical course of cancer patients with fever and neutropenia. Clinical identification of a low-risk subgroup at presentation. Arch Intern Med. 1988 Dec;148(12):2561-8.
http://www.ncbi.nlm.nih.gov/pubmed/3196123?tool=bestpractice.com
Patients who present with hypotension, documented bloodstream infection, or pneumonia are at increased risk for complications and death.[94]González-Barca E, Fernández-Sevilla A, Carratalà J, et al. Prognostic factors influencing mortality in cancer patients with neutropenia and bacteremia. Eur J Clin Microbiol Infect Dis. 1999 Aug;18(8):539-44.
http://www.ncbi.nlm.nih.gov/pubmed/10517190?tool=bestpractice.com
[95]Malik I, Hussain M, Yousuf H. Clinical characteristics and therapeutic outcome of patients with febrile neutropenia who present in shock: need for better strategies. J Infect. 2001 Feb;42(2):120-5.
http://www.ncbi.nlm.nih.gov/pubmed/11531318?tool=bestpractice.com
[96]Darmon M, Azoulay E, Alberti C, et al. Impact of neutropenia duration on short-term mortality in neutropenic critically ill cancer patients. Intensive Care Med. 2002 Dec;28(12):1775-80.
http://www.ncbi.nlm.nih.gov/pubmed/12447522?tool=bestpractice.com
[97]Elting LS, Rubenstein EB, Rolston KV, et al. Outcomes of bacteremia in patients with cancer and neutropenia: observations from two decades of epidemiological and clinical trials. Clin Infect Dis. 1997 Aug;25(2):247-59.
http://www.ncbi.nlm.nih.gov/pubmed/9332520?tool=bestpractice.com
[98]Carratalà J, Rosón B, Fernández-Sevilla A, et al. Bacteremic pneumonia in neutropenic patients with cancer: causes, empirical antibiotic therapy, and outcome. Arch Intern Med. 1998 Apr 27;158(8):868-72.
https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/191870
http://www.ncbi.nlm.nih.gov/pubmed/9570172?tool=bestpractice.com
[99]Lyman GH, Kuderer NM. Cost-effectiveness of myeloid growth factors in cancer chemotherapy. Curr Hematol Rep. 2003 Nov;2(6):471-9.
http://www.ncbi.nlm.nih.gov/pubmed/14561391?tool=bestpractice.com
Risk for recurrent febrile neutropenia
Patients with a history of febrile neutropenia are at risk for subsequent episodes of febrile neutropenia.
If a patient developed febrile neutropenia during a prior cycle of chemotherapy and granulocyte colony-stimulating factor (G-CSF) prophylaxis was not used, then G-CSF prophylaxis should be considered for use with subsequent cycles of chemotherapy.[37]National Comprehensive Cancer Network. NCCN clinical practice guidelines in oncology: hematopoietic growth factors [internet publication].
https://www.nccn.org/guidelines/category_3
[38]Smith TJ, Bohlke K, Lyman GH, et al. Recommendations for the use of WBC growth factors: American Society of Clinical Oncology clinical practice guideline update. J Clin Oncol. 2015 Oct 1;33(28):3199-212.
http://www.ncbi.nlm.nih.gov/pubmed/26169616?tool=bestpractice.com
[39]Aapro MS, Bohlius J, Cameron DA, et al; European Organisation for Research and Treatment of Cancer. 2010 update of EORTC guidelines for the use of granulocyte-colony stimulating factor to reduce the incidence of chemotherapy-induced febrile neutropenia in adult patients with lymphoproliferative disorders and solid tumours. Eur J Cancer. 2011 Jan;47(1):8-32.
http://www.ncbi.nlm.nih.gov/pubmed/21095116?tool=bestpractice.com
Risk assessment for febrile neutropenia should be carried out after each cycle of chemotherapy.