Equis ISSN 2398-2977

Larynx: ventriculocordectomy

Synonym(s): Hobday, ventriculectomy/sacculectomy, cordectomy

Contributor(s): Stephen Adams, Tim Brazil, Graham Munroe, Rachel Murray, Dwayne Rodgerson

Introduction

  • The technique consists of removal of the mucus membrane lining the laryngeal ventricle leading to adhesions between the arytenoid and thyroid cartilages and reduced filling of the ventricles.
  • Many different surgical methods have been used to treat laryngeal hemiplegia   Larynx: hemiplegia  .The technique of ventriculectomy or sacculectomy has been used for most of this century but recent research, particularly using video-endoscopy on animals exercising on a treadmill, has cast doubt on the ability of this technique alone to abduct and stabilize the arytenoid and vocal cords during exercise.
  • Removal of the vocal cords (bilateral cordectomy) decreases airway obstruction when carried out alongside other procedures.

Uses

  • Treatment of laryngeal hemiplegia   Larynx: hemiplegia  particularly the idiopathic form, often performed in conjunction with laryngoplasty   Larynx: laryngoplasty  , or as a single procedure in horses exercising at slow paces.

Advantages

  • Relatively simple procedure.
  • Possible in standing animal.
  • Minimal complication rate.
  • May modify and/or reduce respiratory noise (stridor) associated with hemiplegia.

Disadvantages

  • Probably does not prevent dynamic collapse of laryngeal structures during exercise.

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

  • Same as idiopathic laryngeal hemiplegia   Larynx: hemiplegia  .
  • Good for surgical healing.

Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Mason B J, Riggs C M & Cogger N (2013) Cohort study examining long-term respiratory health, career duration and racing performance in racehorses that undergo left-sided prosthetic laryngoplasty and ventriculocordectomy surgery for treatment of left-sided laryngeal hemiplegia. Equine Vet J 45 (2), 229-234 PubMed.
  • Cramp P et al (2009) Effect of ventriculectomy versus ventriculocordectomy on upper airway noise in draught horses with recurrent laryngeal neuropathy. Equine Vet J 41 (8), 729-734 PubMed.
  • Witte T H, Mohammed H O, Radcliffe C H, Hackett R P & Ducharme N G (2009) Racing performance after combined prosthetic laryngoplasty and ipsilateral ventriculocordectomy or partial arytenoidectomy: 135 Thoroughbred racehorses competing at less than 2400m (1997-2007). Equine Vet J 41(1), 70-75 PubMed.
  • Robinson P et al (2007) Histological evaluation of the equine larynx after unilateral laser-assisted ventriculocordectomy. Equine Vet J 39 (3), 222-225 PubMed.
  • Robinson P et al (2006) Effects of unilateral laser-assisted ventriculocordectomy in horses with laryngeal hemiplegia. Equine Vet J 38 (6), 491-496 PubMed.
  • Taylor S E, Barakzai S Z & Dixon P (2006) Ventriculocordectomy as the sole treatment for recurrent laryngeal neuropathy: long-term results from ninety-two horses. Vet Surg 35 (7), 653-657 PubMed.
  • Brown J A, Derksen F J, Stick J A, Hartmann W M & Robinson N E (2003) Ventriculocordectomy reduces respiratory noise in horses with laryngeal hemiplegia. Equine Vet J 35 (6), 570-574 PubMed.
  • Dixon P M, McGorum D I et al (2003) Long-term survey of laryngoplasty and ventriculocordectomy in an older, mixed-breed population of 200 horses. Part 1: Maintenance of surgical arytenoid abduction and complications of surgery. Equine Vet J 35 (4), 389-396 PubMed.
  • Dixon P M, McGorum B C et al (2003) Long-term survey of laryngoplasty and ventriculocordectomy in an older, mixed-breed population of 200 horses. Part 2: Owners' assessment of the value of surgery. Equine Vet J 35 (4), 397-401 PubMed.
  • Lumsden M et al (1994) Evaluation of partial arytenoidectomy as a treatment for equine laryngeal hemiplegia. Equine Vet J 26 (2), 125-129 PubMed.
  • Shires G M et al (1990) Preliminary study of laryngeal sacculectomy in horses, using a neodymium-yttrium.aluminium garnet laser technique. Am J Vet Res 51 (8), 1247-1249 PubMed.


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