Cystocentesis

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Introduction

  • Percutaneous aspiration of urine from the bladder for diagnostic or therapeutic purposes.

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Uses

  • Cystocentesis is a procedure performed in order to provide an optimal, uncontaminated sample of urine for culture and sensitivity studies.
  • The procedure occasionally forms part of stabilization techniques in animals with lower urinary tract obstruction, when emergency decompression of the bladder is required and a catheter cannot be passed.

Advantages

  • Cystocentesis is the method of choice of urine sample collection for culture and sensitivity since the occurrence of accidental contamination, and therefore spurious or false positive results, is minimized.

Disadvantages

  • When used in the overdistended bladder, cystocentesis may occasionally result in laceration of the bladder wall, therefore it should only be used as an emergency procedure when catheterization has failed.
  • Puncture of other abdominal organs can happen.

Requirements

Materials required

Minimum equipment

  • Sterile 5-10 ml syringe.
  • Sterile 23-25 gauge needle, 1 in.
  • Three-way tap.
  • Kidney dish or sterile urine collection bottles.

Minimum consumables

  • Skin disinfectant and swabs or cotton wool.

Preparation

  • 5 min.
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