title: Piperacillin-tazobactam versus carbapenem therapy with and without amikacin as empirical treatment of febrile neutropenia in cancer patients: results of an open randomized trial at a university hospital.
abstract: OBJECTIVE
  Empirical beta-lactam monotherapy has become the standard therapy in febrile neutropenia. The aim of this study was to compare the efficacy and safety of piperacillin-tazobactam versus carbapenem therapy with or without amikacin in adult patients with febrile neutropenia.
  
  
  METHODS
  In this prospective, open, single-center study, 127 episodes were randomized to receive either piperacillin-tazobactam (4 x 4.5 g IV/day) or carbapenem [meropenem (3 x 1 g IV/day) or imipenem (4 x 500 mg IV/day)] with or without amikacin (1 g IV/day). Doses were adjusted according to renal function. Clinical response was determined during and at completion of therapy.
  
  
  RESULTS
  One hundred and twenty episodes were assessable for efficacy (59 piperacillin-tazobactam, 61 carbapenem). Mean duration of treatment was 14.8 +/- 9.6 days in the piperacillin-tazobactam group and 14.7 +/- 8.8 days in the carbapenem group (P > 0.05). Mean days of fever resolution were 5.97 and 4.48 days for piperacillin-tazobactam and carbapenem groups, respectively (P > 0.05). Similar rates of success without modification were found in the piperacillin-tazobactam (87.9%) and in the carbapenem groups (75.4%; P > 0.05). Fungal infection occurrence rates were 30.5 and 18% in piperacillin-tazobactam and carbapenem groups, respectively (P = 0.05). Antibiotic modification rates were 30.5 and 13.1% (P = 0.02) and the addition of glycopeptides to empirical antibiotic regimens rates were 15.3 and 44.3% for piperacillin-tazobactam and carbapenem groups, respectively (P = 0.001). The rude mortality rates were 14% (6/43) and 29.3% (12/41) in piperacillin-tazobactam and carbapenem groups, respectively (P = 0.08).
  
  
  CONCLUSIONS
  The effect of empirical regimen of piperacillin-tazobactam regimen is equivalent to carbapenem in adult febrile neutropenic patients.
authors.affiliation: Department of Infectious Diseases and Clinical Microbiology, Zonguldak Karaelmas University School of Medicine, 67600 Zonguldak, Turkey. nefiseoztoprak@yahoo.com
authors.forename: Nefise
authors.initials: N
authors.lastname: Oztoprak
authors.forename: Nihal
authors.initials: N
authors.lastname: Piskin
authors.forename: Hande
authors.initials: H
authors.lastname: Aydemir
authors.forename: Guven
authors.initials: G
authors.lastname: Celebi
authors.forename: Deniz
authors.initials: D
authors.lastname: Akduman
authors.forename: Aysegul Seremet
authors.initials: AS
authors.lastname: Keskin
authors.forename: Ayla
authors.initials: A
authors.lastname: Gokmen
authors.forename: Huseyin
authors.initials: H
authors.lastname: Engin
authors.forename: Handan
authors.initials: H
authors.lastname: Ankarali
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000583:Amikacin / Q000008:administration & dosage* / Q000009:adverse effects; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D000970:Antineoplastic Agents / Q000009:adverse effects*; D001424:Bacterial Infections / Q000150:complications* / Q000188:drug therapy / Q000382:microbiology; D015780:Carbapenems / Q000627:therapeutic use*; D003875:Drug Eruptions / Q000209:etiology; D004359:Drug Therapy, Combination; D005260:Female; D005334:Fever / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009369:Neoplasms / Q000150:complications* / Q000188:drug therapy / Q000401:mortality; D009503:Neutropenia / Q000139:chemically induced / Q000188:drug therapy*; D010397:Penicillanic Acid / Q000008:administration & dosage / Q000009:adverse effects / Q000031:analogs & derivatives; D010878:Piperacillin / Q000008:administration & dosage / Q000009:adverse effects; D000077725:Piperacillin, Tazobactam Drug Combination; D011446:Prospective Studies; D015996:Survival Rate; D055815:Young Adult
chemical_list: D000900:Anti-Bacterial Agents; D000970:Antineoplastic Agents; D015780:Carbapenems; D000077725:Piperacillin, Tazobactam Drug Combination; D000583:Amikacin; D010397:Penicillanic Acid; D010878:Piperacillin