Canis ISSN: 2398-2942

Transtracheal wash

Contributor(s): Kyle Braund

Introduction

  • Placing a catheter through the trachea or larynx (entry point at the cricothyroid ligament) allows collection of diagnostic samples from the lower respiratory tract.

Uses

Advantages

  • Simple procedure.
  • Does not require general anesthesia in some cases therefore avoids risk of anesthesia in animals with respiratory compromise.
  • Avoids oropharyngeal sample contamination.
    Oxygen may be administered by facemask during procedure in severely compromised animals.

Disadvantages

  • Sampling is usually blind. Material can be sampled more accurately with endoscopic guidance and this gives better results than blind sampling.
  • More risk of sample contamination from upper respiratory tract, ie trachea, than with bronchoalveolar lavage (BAL).

Requirements

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Preparation

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Procedure

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Aftercare

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Outcomes

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Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • McCullough S, Brinson J (1999) Collection and interpretation of respiratory cytology. Clin Tech Small Anim Pract 14 (4), 220-6 PubMed.
  • Sparkes A, Wotton P, Brown P (1997) Tracheobronchial washing in the dog and cat. In Pract 19 (5), 257-259 VetMedResource.
  • Rebar A H, Hawkins E C, DeNicola D B (1992) Cytologic evaluation of the respiratory tract. Vet Clin North Am Small Anim Pract 22 (5), 1065-1085 PubMed.

Other sources of information

  • Corcoran B (2000) Clinical evaluation of the patient with respiratory disease. In:Textbook of Veterinary Internal Medicine. 5th edn. Ettinger S J & Feldman E C (eds). W B Saunders, Philadelphia. pp 1034-1039.


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