Infection

pp 1–8 | Cite as

Ceftolozane/tazobactam for the treatment of XDR Pseudomonas aeruginosa infections

  • Laura Escolà-Vergé
  • Carles Pigrau
  • Ibai Los-Arcos
  • Ángel Arévalo
  • Belen Viñado
  • David Campany
  • Nieves Larrosa
  • Xavier Nuvials
  • Ricard Ferrer
  • Oscar Len
  • Benito Almirante
Original Paper

Abstract

Purpose

The aim of this study was to evaluate the effectiveness of ceftolozane/tazobactam (C/T) for treating extensively drug-resistant Pseudomonas aeruginosa (XDR-PA) infections, and to analyze whether high C/T dosing (2 g ceftolozane and 1 g tazobactam every 8 h) and infection source control have an impact on outcome.

Methods

Retrospective study of all consecutive patients treated with C/T for XDR-PA infection at a tertiary referral hospital (November 2015–July 2017). Main clinical and microbiological variables were analyzed.

Results

Thirty-eight patients were included. Median age was 59.5 years and Charlson Comorbidity Index was 3.5. Fourteen (36.8%) patients had respiratory tract infection, six (15.8%) soft tissue, and six (15.8%) urinary tract infection. Twenty-three (60.5%) received high-dose C/T and in 24 (63.2%) C/T was combined with other antibiotics. At completion of treatment, 33 (86.8%) patients showed clinical response. At 90 days of follow-up, 26 (68.4%) achieved clinical cure, and 12 (31.6%) had clinical failure because of persistent infection in one patient, death attributable to the XDR-PA infection in four, and clinical recurrence in seven. All-cause mortality was 5 (13.2%). Lower C/T MIC and adequate infection source control were the only variables significantly associated with clinical cure.

Conclusions

C/T should be considered for treating XDR-PA infections, with infection source control being an important factor to avoid failure and resistance.

Keywords

Pseudomonas aeruginosa Extensively drug-resistant Ceftolozane/tazobactam Infection source control 

Notes

Acknowledgements

We thank Celine Cavallo for English language support.

Compliance with ethical standards

Conflict of interest

CP. has received honoraria for talks on behalf of Angelini, MSD, Novartis, Pfizer, Salvat, and Zambon. O.L. has received honoraria for talks on behalf of Astellas, MSD and Pfizer. R.F. has received honoraria for talks on behalf of MSD, Pfizer, Estor and Orion. B.A. has received grant support from Gilead Sciences, Pfizer, and the Instituto de Salud Carlos III. He has received honoraria for talks on behalf of Gilead Sciences, Merck Sharp & Dohme, Pfizer, Astellas Pharma, Novartis, and Angelini. The other authors have no declarations.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Laura Escolà-Vergé
    • 1
    • 5
  • Carles Pigrau
    • 1
    • 5
  • Ibai Los-Arcos
    • 1
  • Ángel Arévalo
    • 2
  • Belen Viñado
    • 3
    • 5
  • David Campany
    • 2
  • Nieves Larrosa
    • 3
    • 5
  • Xavier Nuvials
    • 4
  • Ricard Ferrer
    • 4
  • Oscar Len
    • 1
  • Benito Almirante
    • 1
    • 5
  1. 1.Infectious Diseases Department, Hospital Universitari Vall d’HebronUniversitat Autònoma de BarcelonaBarcelonaSpain
  2. 2.Pharmacy Department, Hospital Universitari Vall d’HebronUniversitat Autònoma de BarcelonaBarcelonaSpain
  3. 3.Microbiology Department, Hospital Universitari Vall d’HebronUniversitat Autònoma de BarcelonaBarcelonaSpain
  4. 4.Intensive Care Department and SODIR Research Group, Hospital Universitari Vall d’HebronUniversitat Autònoma de BarcelonaBarcelonaSpain
  5. 5.Spanish Network for Research in Infectious Diseases (REIPI)MadridSpain

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