Bovis ISSN 2398-2993

Bloat: trocar placement

Synonym(s): trochar, trocharisation

Contributor(s): Ash Phipps , Adam Dunstan-Martin

Introduction

  • Trocarization is a procedure whereby a trocar and cannula are inserted through the abdominal wall and into the rumen.

Uses

  • Trocarization may be indicated in the following situation:
    • Emergency treatment of ruminal tympany (gaseous or froth distension).
    • Treatment of chronic ruminal tympany (gaseous distension).

Advantages

  • Straight-forward technique to carry out.
  • Rapid procedure that may save the animal’s life in emergency situations.
  • Successful surgery results in the animal remaining in the herd.

Disadvantages

  • Severe ruminal distension may result in inappropriate placement of the trocar and therefore cannula.
    • Inappropriate placement can result in ingesta contaminating the abdomen and subsequent development of peritonitis.

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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Prognosis

  • Dependent of the severity of the condition and level of rumen content contamination of the abdomen.
  • Most animals will experience a reduction in milk production after the procedure when an emergency procedure is performed.

Further Reading

Publications

Other sources of information

  • Anderson D E & Rings M (2008) Current veterinary therapy: food animal practice. Elsevier Health Sciences.
  • Divers T  J & Peek S (2007) Rebhun's diseases of dairy cattle. Elsevier Health Sciences.
  • Fubini S L & Ducharme N (2004) Farm animal surgery. Elsevier Health Sciences.
  • McAllister T A, McCartney D, Stanford K & Cheng K J (2003) Bloat in cattle. Alberta Agriculture, Food and Rural Development, Information Packaging Centre.


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