Modified technique for common carotid artery transposition in standing horses.
Authors: Tapio Heidi, Argüelles David, Gracia-Calvo Luis A, Raekallio Marja
Journal: Veterinary surgery : VS
Summary
# Editorial Summary: Modified Carotid Artery Transposition in Standing Horses Relocating the common carotid artery to a subcutaneous position creates a more accessible site for repeated arterial catheterisation, which is valuable for both research and clinical applications requiring long-term vascular access. Researchers in this 2017 study refined existing surgical techniques by approaching the right carotid artery through a dorsal incision parallel to the jugular vein, then securing it subcutaneously within two layers of sutured brachiocephalicus muscle—all performed on standing, sedated horses under local anaesthesia. Six of the eight horses tolerated repeated catheterisation over a 10-week period with no intraoperative complications, though two animals developed mild perincisional oedema that resolved spontaneously. However, two horses experienced postoperative complications: one developed laryngeal hemiplegia (detected endoscopically) and another showed either surgical site infection or excessive periarterial fibrosis that prevented subsequent catheter placement. For practitioners considering this technique, a 75% success rate represents reasonable efficacy for standing surgical access, but upper airway endoscopy should form part of postoperative assessment protocols, particularly given the risk of iatrogenic laryngeal complications and the potential for fibrosis formation that may limit the functional lifespan of the transposed vessel.
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Practical Takeaways
- •This modified standing technique offers an alternative to recumbent surgery for CCA transposition, allowing use in clinical settings without general anesthesia facilities
- •Postoperative upper airway endoscopy should be considered routine, as laryngeal hemiplegia may occur without obvious clinical signs
- •Success rate of approximately 75% and complication rate of 25% should inform client discussions about procedure outcomes and risks
Key Findings
- •Modified standing surgery technique for common carotid artery transposition was successful in 6 of 8 horses (75%)
- •Transposed artery remained patent and suitable for repeated catheterization for 10 weeks in successful cases
- •Two horses developed postoperative right-sided laryngeal hemiplegia detected on endoscopy
- •Two horses developed complications (infection or fibrosis) that compromised arterial patency