Canis ISSN: 2398-2942

Balloon valvuloplasty

Contributor(s): Serena Brownlie

Introduction

  • Technique used to treat pulmonic stenosis Pulmonic stenosis , and occasionally aortic stenosis Heart: aortic stenosis , using a cardiac balloon catheter to dilate a fibrous ring below the valve or to split fused valve cusps.

Uses

  • Can be tried even in quite sick pulmonic stenosis patients with some hope of improving clinical signs and reasonable chance of surviving the procedure.

Advantages

  • Relatively non-invasive and short procedure when compared with other types of surgery, eg pericardial patch grafting , because all others require thoracotomy Thorax: thoracotomy (intercostal).
  • Little aftercare required.

Disadvantages

  • Often only palliative and may need to be repeated.
  • Not effective in cases with marked infundibular muscle hypertrophy contributing to, or causing the stenosis. Pericardial patch grafting is a more suitable technique for such cases.
  • Not much less expensive than open chest surgery, because of cost of catheters.
  • Causes permanent valvular insufficiency, though pulmonic insufficiency is usually well tolerated.

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

  • Usually some improvement noticed, especially severity or frequency of syncopal episodes. A small decrease in gradient may improve dog's signs dramatically.

Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Johnson M S & Martin M (2004) Results of balloon valvuloplasty in 40 dogs with pulmonic stenosis. JSAP 45 (3), 148-153 PubMed.
  • Bussdori C, DeMadron E, Santilli R A et al (2001) Balloon valvuloplasty in 30 dogs with pulmonic stenosis effect of valve morphology and annular size on initial and 1 year outcome. JVIM 15 (6), 553-558 PubMed.
  • Martin M W S, Godman M, Fuentes V L et al (1992) Assessment of balloon pulmonary valvuloplasty in six dogs. JSAP 33 (9), 443-9 VetMedResource.
  • Brownlie S E, Cobb M A, Chambers J et al (1991) Percutaneous balloon valvuloplasty in four dogs with pulmonic stenosis. JSAP 32 (4), 165-9 VetMedResource.
  • Bright J, Jennings J, Toal R et al (1987) Percutaneous balloon valvuloplasty for treatment of pulmonic stenosis in a dog. JAVMA 191 (8), 995-6 PubMed.


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