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The use of deep oral swabs as a surrogate for transoral tracheal wash to obtain bacterial cultures in dogs with pneumonia

Authors

  • Catherine M. Sumner DVM,

    1. Department of Clinical Sciences at Tufts Cummings School of Veterinary Medicine, North Grafton, MA
    2. Tufts VETS, Walpole, MA
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  • Elizabeth A. Rozanski DVM, DACVIM, DACVECC,

    Corresponding author
    • Department of Clinical Sciences at Tufts Cummings School of Veterinary Medicine, North Grafton, MA
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  • Claire R. Sharp BSc, BVMS (Hon), DACVECC,

    1. Department of Clinical Sciences at Tufts Cummings School of Veterinary Medicine, North Grafton, MA
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  • Scott P. Shaw DVM, DACVECC

    1. Department of Clinical Sciences at Tufts Cummings School of Veterinary Medicine, North Grafton, MA
    Current affiliation:
    1. New England Veterinary Care and Cancer Center, Windsor, CT
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  • Funding provided by the Companion Animal Health Fund, Tufts Cummings School of Veterinary Medicine, North Grafton, MA, USA.

  • Presented in abstract form at the 16th International Veterinary Emergency and Critical Care Symposium, San Antonio, TX, September, 2010.

  • Dr Rozanski is a member of the journal's editorial board but did not participate in the peer review process other than as an author. The authors declare no other conflict of interest.

Address correspondence and reprint requests to

Dr Elizabeth Rozanski, Department of Clinical Sciences, Cummings School of Veterinary Medicine at Tufts University, 200 Westboro Rd, North Grafton, MA 01536, USA.

Email: elizabeth.rozanski@tufts.edu

Abstract

Objective

To determine agreement in bacterial culture and susceptibility (BC&S) between deep oral swab (DOS) and routine transoral tracheal wash (TOTW) in dogs with pneumonia.

Design

Prospective study, performed between 2008 and 2010 with no follow-up period.

Setting

University teaching hospital.

Animals

Five puppies and 5 adult dogs with community or hospital-acquired pneumonia.

Measurements and Main Results

A DOS was collected from each patient; dogs were then briefly anesthetized with propofola for a routine TOTW. Routine microbiology techniques were used for culture. Positive culture results were obtained from all 20 swabs. Results of BC&S were compared between the 2 sites. In all puppies, there was no agreement between DOS and TOTW. In adult dogs, 2 patients with hospital-acquired infection (HAI) had complete agreement between the BC&S results from DOS and TOTW. Two adult dogs had some similarity in BC&S results, and the final dog had no relationship between cultures.

Conclusions

DOS is not an appropriate alternative to TOTW to obtain samples for BC&S in puppies with pneumonia. In adult dogs, traditional TOTW remains the gold standard, but DOS may be considered in dogs with suspected HAI. Further work is needed to confirm this preliminary finding.

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