Outcomes in 102 patients that present to the emergency department with chemotherapy-induced febrile neutropenia / Kemoterapi kaynakli febril notropeni sikayetiyle acil servise basvuran 102 hastanin sonuclari.
Neutropenia (Patient outcomes)
Hospitals (Emergency service)
Lim, Joo Han
Choi, Woong Gil
Kim, Kyung Hwan
Shin, Dong Wun
Lee, Moon Hee
|Publication:||Name: Turkish Journal of Hematology Publisher: Aves Yayincilik Audience: Academic Format: Magazine/Journal Subject: Health Copyright: COPYRIGHT 2011 Aves Yayincilik ISSN: 1300-7777|
|Issue:||Date: Sept, 2011 Source Volume: 28 Source Issue: 3|
Objective: Febrile neutropenia (FN) is a major toxic responseto chemotherapy requiring prompt medical attention. There are a limited number of reports on clinical outcome in patients with FN that present to emergency departments.
Materials and Methods: We retrospectively evaluated clinical manifestations, therapeutic outcomes, and risk factors for FN in 102 adult patients that presented to the emergency department between 1 January 2006 and 31 March 2009. FN was defined as a body temperature > 38[degrees]C and a neutrophil count > 0.5 x [10.sup.9]/L on the day of fever onset or the day after.
Results: Mean age of the patients was 57 years. Mean absolute neutrophil count (ANC) was 436.8/m[m.sup.3] (range: 0-1000/m[m.sup.3]). In all, 23 of the patients (22.5%) died due to complications related to FN. There were not a statistical difference in therapeutic outcome among tumor types, performance status, sex, depth of neutropenia, or time from emergency department presentationto initiation of antibiotic therapy. Age was an important prognostic factor for therapeutic outcome. Mean age of fatal cases was 65 years versus 56 years for non-fatal cases (p = 0.016). Bacteremia was noted in 19 patients, 10 (53%) of which died. The mortality rate was significantly higher in thepatients with blood culture-proven bacteria than in those whose blood culture yielded no organism (p = 0.013).
Conclusion: FN patients that presented to the emergency department had a high mortality rate that increased with age. Given the increasing age of patients diagnosed with cancer as well as therapeutic interventions, the high mortality rate associated with chemotherapy-induced FN in elderly patients requires further study in order to reduce the risk of death. (Turk J Hernatol 2011; 28: 193-7)
Key words: Neutropenia, fever, emergency department, chemotherapy
Received: December 09, 2010
Accepted: March 28, 2011
Amac: Febril notropeni (FN), uygun tibbi tedaviyi gerektiren kemoterapiye baglih gelisen onemli bir toksik yanittir. Acil servise basvuran FN'li hastalarda klinik sonuclara yonelik sinirli sayida bildiri mevcuttur.
Gerecler ve Yontemler: 1 Ocak 2006 ile 31 Mart 2009 arasinda acil servise gelen 102 eriskin FN hastasinda klinik belirtiler, tedavi sonuclan ve FN icin risk faktorleri geriye donuk olarak degerlendirilmistir. FN > 38[degrees]C vucut sicakligi ve ates basladigi gun veya ertesi gunde > 0.5x[10.sup.9]/L notrofil sayisi olarak tanimlanmistir.
Bulgular: Hastalarin yas ortalamasi 57'dir. Ortalama mutlak notrofil sayimi (ANC) 436.8 mm/3'dir (aralik: 0-1000/m[m.sup.3]). Genel anlamda hastalarin 23'unde (%22.5) FN ile iliskili komplikasyonlar nedeniyle olum meydana gelmistir. Tumor tipleri, performans durumu, cinsiyet, notropeni agirligi veya acil duruma gelmeden antibiyotik tedavisine baslanmasina kadar gecen sure arasinda tedavi sonuclari acisindan istatistiksel bir fark gorulmemistir. Yas tedavi sonuclari yonunden onemli bir prognoz faktoriithir. Olumcul olgularda ortalama yas 65 iken olumcul olmayanlarda 56'dir (p = 0.016). Bakteriemi 19 hastada gozlenmis olup bunlardan 10'u olmustur (%53). Kan kulturuyle bakterinin kanitlandigi hastalarda olum orani, kan kulturu ile bir organizma gosterilemeyen hastalara gore anlamli bir sekilde daha yuksektir (p = 0.013).
Sonuc: Acil servise basvuran FN hastalarmda yas ilerledikce daha yuksek bir olum orani gozlenmistir. Kanser tanisi konulan hastalarda ileri yas ve yani sira tedavi girisimleri goz onune alinarak, yasli hastalarda kemoterapi kaynakli FN ile iliskili yuksek olum oraninin azaltimasi icin daha fazla calisma gerekmektedir. (Turk J Hematol 2011; 28: 193-7)
Anahtar kelimeler: Notropeni, ates, acil servis, kemoterapi
Gelis tarihi: 09 Aralik 2010
Kabul tarihi: 28 Mart 2011
The association between neutropenia and infection, which inevitably develop following chemotherapy, is a frequent cause of morbidity and mortality in cancer patients (1), (2). Chemotherapy-induced febrile neutropenia (FN) is one of the most important and potentially life-threatening oncologic emergencies, which requires prompt medical assessment and treatment with antibiotics. In febrile patients with neutropenia, body fluids should be obtained for cultures and treatment with broad-spectrum antibiotics should be started. It was recently reported that the prevalence of gram-positive infection in cancer patients with FN is increasing (3). Although the standard of care is to treat FN as an oncologic emergency, patients generally wait for prolonged periods before receiving the necessary treatment. Prior to the present study, few data have been collected regarding the outcome of patients with FN that present to an emergency department (ED). Additional research is therefore required in order to examine the characteristics and outcome in patients that visited an ED due to chemotherapy-induced FN and to identify the risk factors associated with mortality in these patients. Accordingly, the present study retrospectively analyzed the characteristics and outcomes in patients with chemotherapy-induced FN that presented to our ED.
Methods and Materials
We retrospectively evaluated clinical manifestations, outcomes, and risk factors for FN following chemotherapy in 143 solid adult tumor and lymphoma patients between 1 January 2006 and 31 March 2009. Patients were selected for inclusion in the study based on the diagnosis of neutropenia and fever. Fever was defined by the criteria given in the Infectious Disease Society Guidelines, which is a fever > 38[degrees]C for more than 1 h or any single temperature measurement > 38.3[degrees]C (4), (5). Patients that did not receive chemotherapy were excluded from the analysis, as were those that were not febrile or neutropenic. Patients whose neutropenia and fever were diagnosed in the hematology and oncology department clinics were admitted to hospital directly without an ED visit and were likewise not included in this study. We defined FN as a body temperature > 38[degrees]C and a neutrophil count [less than or equal to] 0.5 x [10.sup.9]/L on the same day as fever onset or the day after.
ED records for consecutive oncology patients with FN were reviewed and mortality, intensive care unit (ICU) use, blood culture results, time from ED presentation and administration of empirical antibiotics, and age were recorded. ED and subsequent inpatient records were also reviewed for the following: vital signs, symptoms, physical findings, suspected source of infection in the ED, white blood cell count (WBC) or absolute neutrophil count (ANC), chest radiograph results, urinalysis results, hospital course, use of granulocyte colony-stimulating factor (G-CSF), blood, urine, or other culture results, and outcome. The time from fever onset to ED presentation was defined as the time from the onset of subjective symptoms (based on patient history) and presentation to the ED. The time from ED to antibiotic administration was defined as the time from presentation to the ED and the commencement of antibiotic therapy.
We performed blood cultures as soon as possible in patients suspected of FN in the ED. Empirical antibiotics (3rd-or 4th-generation cephalosporin in combination with aminoglycoside) were administered to most of the patients. If FN was accompanied by renal insufficiency, ciprofloxacin was used as an empirical antibiotic in preference to aminoglycoside.
The survival rate, as the treatment outcome, was analyzed using the Kaplan-Meier method, with the date of presentation to the ED as the starting date. We also performed Cox regression analysis using the following variables: age, sex, time from ED presentation to the start of antibiotic therapy, the effect of G-CSF, cancer type (solid tumor or lymphoma), and performance status. All statistical analyses were conducted using SPSS v.12.0 software (SPSS, Chicago, IL). A p value of less than 0.05 was considered to be statistically significant.
We analyzed 102 patients that presented to our ED due to chemotherapy-induced FN between 1 January 2006 and 31 March 2009. The characteristics of these patients are summarized in Table 1. The Eastern Cooperative Oncology Group (ECOG) performance status of the patients was as follows: 20 patients had a performance status of 2, 67 had a performance status of 1, and 15 had a performance status of 0. Mean age of the patients was 57 years (range: 25-84 years) and 53% were male. Mean ANC was 436.8 m[m.sup.3] (range: 0-1000 m[m.sup.3]); 4 patients had an ANC < 10 m[m.sup.3].
Treatment and survival outcome
Survival of elderly patients ([greater than or equal to] 65) was inferior to that of the younger patients ( < 65). Mean age of the patients that died due to an FN event (65 years) was significantly (p = 0.016) higher than that of the patients that didn't (56 years). There wasn't a difference in the outcome of FN between patients with lymphomas and those with solid tumors. Median time from the onset of fever to ED presentation was 24 h; the difference between the patients that died and survived was not significant (Table 2). We also analyzed the patients according to those that presented to the ED within 24 h of the onset of fever and after 24 h; however, there wasn't a significant difference in outcome between these 2 groups. Median time from ED presentation to the start of antibiotic therapy was approximately 2 h (110 min; range: 0.6-13.3 h), and there wasn't a significant difference between the patients that died and those that survived.
Among the patients that presented to the ED outside regular working hours, the time from ED presentation to the start of antibiotic therapy was longer than that in patients that presented during regular working hours; however, the difference was not statistically significant and there was no difference in the outcome of FN. In all, 24 patients (23.5%) required ICU management, of which 18 (75%) died due to complications associated with FN. Patients with FN that required ICU care had a significantly higher mortality rate than those did not require ICU care (p < 0.05). Patients treated in the ICU were older than those treated in a general ward (median age: 68 vs. 55, respectively).
We also analyzed the relationship between blood culture positivity and treatment outcome. In total, 19 patients had blood culture-positive results; 6 had gram-positive bacteremia and 13 had gram-negative bacteremia. Figure 1 shows the microorganisms isolated via blood culture. The 19 patients with bacteremia were initially treated with the 3rd-generation antibiotics cephalosporin and aminoglycoside, except 2 patients highly suspected for gram-positive infection (1 patient had phlebitis and 1 patient had catheter-related infection). The mortality rate was significantly higher among the culture-positive patients than among those whose blood culture yielded no organism (47.4% versus 16.3%, p = 0.013). In total, 23 patients died due to an infection associated with FN. The patients that died were significantly older than those that survived.
[FIGURE 1 OMITTED]
Chemotherapy-induced neutropenia is a common toxicity that increases patient risk of morbidity and mortality, and may compromise the effectiveness of treatment via a reduction in chemotherapy dose intensity or dose density (6). In the present study advanced age, necessity of ICU care, and bacteremia (confirmed by blood culture) were risk factors for mortality in the patients that presented to our ED with chemotherapy-induced FN. Intensive education for patients that receive chemotherapy began at our hospital in 2005. The education we provide includes information on nutrition, chemotherapy toxicity, and conditions that should prompt presentation to hospital. A fever > 38[degrees]C is emphasized as a major side effect that necessitates immediate medical assessment; however, only 34 of the patients in the present study received individual education regarding chemotherapy and its toxicity. There was a statistically significant difference in outcome between the patients that received education and those that did not. It would nevertheless be imprudent to conclude that intensive education contributed to the survival of patients with FIN, however, there is no doubting the value of education for cancer patients scheduled to receive cytotoxic chemotherapy.
Many researchers are now exploring alternatives to the standard approach to treating FN, including prophylactic oral antibiotic treatment, administration of prophylactic hematopoietic growth factors, and even oral antibiotic therapy for low-risk outpatients (7-10).
As the present study used retrospective analysis of data obtained at only 1 academic institution that treats patients with malignancies, it might not reflect care in the community at large or that at other institutions The retrospective design of the present study and the small sample involved should be taken into account when making inferences and recommendations based on the findings.
In conclusion, we analyzed the outcome of patients that presented to our ED due to chemotherapy-induced FN. We observed considerable mortality, particularly in the elderly patients. Given the increasing age of adults diagnosed with cancer that undergo chemotherapy, and the heightened risk of FN among elderly patients, further prospective studies are warranted in order to establish a more appropriate management strategy for chemotherapy-induced FN, and for reducing the incidence of mortality and morbidity due to chemotherapy.
IRB committee of Inha university hospital approved our study. IRB committee approval is same an ethical committee approval.
Conflict of interest statement
The authors of this paper have no conflicts of interest, including specific financial interests, relationships, and/or affiliations relevant to the subject matter or materials included.
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Joo Han Lim (1), Hoon Kim (2), Woong Gil Choi (3), Kyung Hwan Kim (2), Dong Wun Shin (2), Moon Hee Lee (1)
(1) Department of Internal Medicine, Faculty of Medicine, Inha University, Incheon, Korea
(2) Department of Emergency Medicine, Inje University Ilsan Paik Hospital, Goyang, Korea
(3) Department of Internal Medicine, Konkuk University Hospital, Chungju, Korea
Address for Correspondence: Prof. Hoon Kim, 2240 Daehwa-dong, Ilsan Seo-gu, Goyang-si, Gyeonggi-do, Korea Goyang-si-Korea Phone: +82-31-910-9782 E-mail: firstname.lastname@example.org
Table 1. Patient characteristics Total Patients n=102 Sex Male 50 (49%) Female 52 (51%) Median age, years 57 Cancer Type Lymphoma 30 (29.4%) Solid Tumor 72 (70.6%) ANC median, number/[mm.sup.3] 90 (range; 5-760) ANC [less than or equal to] 100 [mm.sup.3] 53 (52%) ANC > 100 [mm.sup.3] 49 (48%) Symptom to ED time [less than or equal to] 24hr 49 (48%) > 24hr 53 (52%) Median ED to Antibiotics time (min) 110 (range; 35-615) Blood culture result Bacteremia 19 (18.6%) gram-positive 6 (5.9%) gram-positive 13 (512.7%) No growth 80 (70.4%) No culture 3 (2.9%)
Table 2. Comparison of the patients that died and survived Survived Died p Age (years) 56 (25-84) 65 (45-84) 0.016 Blood Culture Results n n Bacteremia 10 9 0.013 non-bacteremia 67 13 Cancer Type n n Lymphoma 22 8 0.521 Solid 57 15 Absoulte Neutrophil Count n n ANC <100 44 9 0.162 ANC >100 35 14 Time of symptom to ED n n Symptom to ED <24h 52 13 0.414 Symptom to ED >24h 27 10
Bacteria n (%) gram Positive CNS 2 (10.5) S. pneumoniae 2 (10.5) [beta]-hemolytic streptococcus 1 (5.2) micrococcus 1 (5.2) gram Negative E. coli 6 (31.6) Pseudomonas 4 (21.1) Klebsiella 2 (10.5) Citrobacter 1 (5.2) Figure 1. Culture results isolated in the patients with bacteremia
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