title: Assessment of chemotherapy-induced emesis and evaluation of a reduced-dose intravenous ondansetron regimen in pediatric outpatients with leukemia.
abstract: OBJECTIVE
  To measure the severity of nausea and vomiting in pediatric patients receiving intravenous or intrathecal chemotherapy for acute lymphoblastic leukemia and to evaluate the effectiveness of 2 intravenous doses of ondansetron for this condition.
  
  
  METHODS
  Patients were surveyed during repeated treatments of maintenance chemotherapy, given with or without ondansetron, using a repeated measures pretest/posttest design.
  
  
  METHODS
  Outpatient pediatric oncology clinic.
  
  
  METHODS
  Sixteen pediatric patients (aged 2-15 years, mean 6.2) with acute lymphoblastic leukemia.
  
  
  METHODS
  Surveys to assess nausea and vomiting and the extent of interference with daily activities were administered following emetogenic chemotherapy with or without ondansetron.
  
  
  RESULTS
  A total of 255 surveys following emetogenic chemotherapy with daunorubicin, cyclophosphamide, carmustine, and etoposide and cytarabine combined, as well as intrathecal therapy with methotrexate, hydrocortisone, and cytarabine, were analyzed. Analysis was performed on surveys of 149 courses without antiemetic therapy and 106 courses after 2 doses of ondansetron 0.15 mg/kg iv. The most emetogenic chemotherapy treatment was the etoposide/cytarabine combination (p < 0.05). Ondansetron completely protected patients (defined as no nausea or no vomiting) during most (> 50%) of the chemotherapy treatments, except for those in which cyclophosphamide was used. Ondansetron provided greater control of nausea and vomiting, a higher percentage of complete protection, and decreased the daily activity interference rating for carmustine and etoposide/cytarabine compared with courses of chemotherapy without antiemetics (p < 0.05). Two intravenous doses of ondansetron also provided durable antiemetic efficacy over time for the most emetogenic chemotherapy treatment (etoposide/cytarabine).
  
  
  CONCLUSIONS
  Etoposide/cytarabine proved to be the most emetogenic of the chemotherapy treatments studied. A reduced-dose regimen of intravenous ondansetron was shown to be an effective antiemetic for the outpatient treatments with etoposide/cytarabine and carmustine, but not with cyclophosphamide.
authors.affiliation: College of Pharmacy, University of New Mexico, Albuquerque 87131.
authors.forename: M T
authors.initials: MT
authors.lastname: Holdsworth
authors.forename: D W
authors.initials: DW
authors.lastname: Raisch
authors.forename: M H
authors.initials: MH
authors.lastname: Duncan
authors.forename: C M
authors.initials: CM
authors.lastname: Chavez
authors.forename: M M
authors.initials: MM
authors.lastname: Leasure
mesh_terms: D000293:Adolescent; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000009:adverse effects*; D002648:Child; D002675:Child, Preschool; D003561:Cytarabine / Q000009:adverse effects; D005047:Etoposide / Q000009:adverse effects; D005260:Female; D006801:Humans; D007262:Infusions, Intravenous; D008297:Male; D009325:Nausea / Q000139:chemically induced* / Q000517:prevention & control; D017294:Ondansetron / Q000008:administration & dosage* / Q000627:therapeutic use; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000188:drug therapy*; D012720:Severity of Illness Index; D014839:Vomiting / Q000139:chemically induced* / Q000517:prevention & control
chemical_list: D003561:Cytarabine; D017294:Ondansetron; D005047:Etoposide