Outpatient treatment with ceftriaxone alone or in combination with teicoplanin in febrile neutropenic children and adolescents with cancer

Randomized controlled trial comparing oral amoxicillin-clavulanate and ofloxacin with intravenous ceftriaxone and amikacin as outpatient therapy in pediatric low-risk febrile neutropenia

BACKGROUND

Outpatient oral therapy is infrequently used in pediatric low-risk febrile neutropenia (LRFN) as there is insufficient data regarding its equivalence as compared with parenteral therapy.

METHODS

This is a single institutional, randomized control trial in pediatric LRFN aged 2 to 15 years, in which 123 episodes in 88 patients were randomized to outpatient oral ofloxacin 7.5 mg/kg 12 hourly and amoxycillin-clavulanate 12.5 mg/kg 8 hourly or outpatient intravenous (IV) ceftriaxone 75 mg/kg and amikacin 15 mg/kg once daily after blood cultures.

RESULTS

Out of 119 evaluable episodes, one-third were leukemia patients in maintenance and rest were solid tumors. Success was achieved in 55/61 (90.16%) and 54/58 (93.1%) in oral and IV arms, respectively, (P=0.56). There were 3 hospitalizations but no mortality. Median days to resolution of fever, absolute neutrophil count >500/mm(3) and antibiotic use were 3, 5, and 6 days in both arms. There were 5 blood culture isolates (3 gram-positive and 2 gram-negative bacteria). Failure of outpatient therapy was associated with perianal infections, bacteremia, febrile neutropenia onset before day 9 of chemotherapy in solid tumors and Vincristine, actinomycin-D, and cyclophosphamide chemotherapy for rhabdomyosarcoma. All gram-positive isolates were successes, whereas both gram-negative isolates were failures. Diarrhea in IV arm and Vincristine, actinomycin-D, and cyclophosphamide chemotherapy in the oral arm predicted failure in subgroup analysis.

CONCLUSIONS

Outpatient therapy is efficacious and safe in pediatric LRFN. There was no difference in outcome in oral versus IV outpatient therapy. Amoxycillin-clavulanate and ofloxacin may be the oral regimen of choice.

Early hospital discharge followed by outpatient management versus continued hospitalization of children with cancer, fever, and neutropenia at low risk for invasive bacterial infection

PURPOSE

To compare outcome and cost of ambulatory versus hospitalized management among febrile neutropenic children at low risk for invasive bacterial infection (IBI).

PATIENTS AND METHODS

Children presenting with febrile neutropenia at six hospitals in Santiago, Chile, were categorized as high or low risk for IBI. Low-risk children were randomly assigned after 24 to 36 hours of hospitalization to receive ambulatory or hospitalized treatment and monitored until episode resolution. Outcome and cost were determined for each episode and compared between both groups using predefined definitions and questionnaires.

RESULTS

A total of 161 (41%) of 390 febrile neutropenic episodes evaluated from June 2000 to February 2003 were classified as low risk, of which 149 were randomly assigned to ambulatory (n = 78) or hospital-based (n = 71) treatment. In both groups, mean age (ambulatory management, 55 months; hospital-based management, 66 months), sex, and type of cancer were similar. Outcome was favorable in 74 (95%) of 78 ambulatory-treated children and 67 (94%) of 71 hospital-treated children (P = NS). Mean cost of an episode was US 638 dollars (95% CI, 572 dollars to 703 dollars) and US 903 dollars (95% CI, 781 dollars to 1,025 dollars) for the ambulatory and hospital-based groups, respectively (P =.003).

CONCLUSION

For children with febrile neutropenia at low risk for IBI, ambulatory management is safe and significantly cost saving compared with standard hospitalized therapy.

Antibiothérapie ambulatoire chez les enfants neutropéniques fébriles

NEW STRATEGIES: Fever in a neutropenic patient requires the rapid initiation of a broad spectrum antibiotic and continued until correction of the neutropenia. Several studies have been conducted recently in order to define the populations of children in whom the antibiotherapy could be suspended early without risk of relapse of fever and/or severe infection. Moreover, the high costs of hospitalisation and the limited number of beds in the departments of Paediatric Oncology Haematology have led to studies on the feasibility of an antibiotherapy at home. THE EARLY SUSPENSION OF THE ANTIBIOTHERAPY: The criteria retained in several studies for the early suspension of the antibiotherapy have been: apyrexia for at least 24 hours, a satisfactory clinical status, the absence of positive haemocultures and haematological signs showing the end of aplasia in patients in remission of their disease. Studies have confirmed the possibility of early suspension of intravenous antibiotics in low-risk patients, without fever and without microbiological signs. THE PLACE OF ORAL ANTIBIOTICS: In several comparative studies, the success rate with intravenous antibiotics and oral antibiotics was comparable. The rate of failures was greater in patients with severe initial neutropenia. OUTPATIENT ANTIBIOTICS: In children, 2 types of studies have been conducted. The first studied the feasibility of an antibiotherapy at home following antibiotherapy in the hospital in order to reduce the costs and duration of hospitalisation. The others proposed an antibiotherapy at home from the start, either with the intravenous or the oral route. Following all these studies, it appeared that, in certain low-risk neutropenic children with fever, not only the antibiotics could be suspended before the complete correction of the neutropenia, but also a large spectrum oral antibiotherapy could replace the intravenous antibiotherapy and outpatient treatment would therefore be feasible.

Prospective, multicenter evaluation of risk factors associated with invasive bacterial infection in children with cancer, neutropenia, and fever

PURPOSE

To identify clinical and laboratory parameters present at the time of a first evaluation that could help predict which children with cancer, fever, and neutropenia were at high risk or low risk for an invasive bacterial infection.

PATIENTS AND METHODS

Over a 17-month period, all children with cancer, fever, and neutropenia admitted to five hospitals in Santiago, Chile, were enrolled onto a prospective protocol. Associations between admission parameters and risk for invasive bacterial infection were assessed by univariate and logistic regression analyses.

RESULTS

A total of 447 febrile neutropenic episodes occurred in 257 children. Five parameters were statistically independent risk factors for an invasive bacterial infection. Ranked by order of significance, they were as follows: C-reactive protein levels of 90 mg/L or higher (relative risk [RR], 4.2; 95% confidence interval [CI], 3.6 to 4.8); presence of hypotension (RR, 2.7; 95% CI, 2.3 to 3.2); relapse of leukemia as cancer type (RR, 1.8, 95% CI, 1.7 to 2.3); platelet count less than or equal to 50,000/mm(3) (RR, 1.7; 95% CI, 1.4 to 2.2); and recent (< or = 7 days) chemotherapy (RR, 1.3; 95% CI, 1.1 to 1.6). Other previously postulated risk factors (magnitude of fever, monocyte count) were not independent risk factors in this study population.

CONCLUSION

In a large population of children, common clinical and laboratory admission parameters were identified that can help predict the risk for an invasive bacterial infection. These results encourage the possibility of a more selective management strategy for these children.

"Low-risk" prediction rule for pediatric oncology patients presenting with fever and neutropenia

PURPOSE

To prospectively derive and validate a clinical prediction rule to allow a more tailored approach to the management of pediatric oncology outpatients presenting with fever and neutropenia.

PATIENTS AND METHODS

The clinical prediction rule was derived over a 1-year period and then validated over the following 8 months in a new set of fever and neutropenia episodes. Patients were excluded if they presented with comorbidity or an abnormal chest x-ray (CXR).

RESULTS

Significant bacterial infection (SBI; defined as any blood or urine culture positive for bacteria, interstitial or lobar consolidation on CXR, or unexpected death from infection) was documented in 43 of the 227 episodes. Multivariate analysis found four significant factors: bone marrow disease, general appearance unwell on initial examination, monocyte count less than 0.1 x 10(9)/L, and peak oral or oral equivalent temperature greater than 39 degrees C. Only the monocyte count contributed to determining a low-risk group, excluding SBI with 84% sensitivity (95% confidence interval [CI], 61% to 100%), 42% specificity (95% CI, 38% to 46%), and a negative predictive value of 92% (95% CI, 76% to 100%). If the monocyte count was >/= 0.1 x 10(9)/L at the time of presentation (low risk), the incidences of SBI and bacteremia were 8% and 5%, respectively, versus 25% and 17% in the high-risk group. When validated in a new population of 136 episodes of fever and neutropenia, the incidences of SBI and bacteremia in the low-risk group were 12% and 5%, respectively, and 25% and 19% in the high-risk group.

CONCLUSION

Pediatric oncology outpatients with fever and neutropenia who present with an initial monocyte count of >/= 0.1 x 10(9)/L and do not have comorbidity or an abnormal CXR at the time of presentation are at lower risk for SBI and can be considered for less aggressive initial therapy.