Endoscope-guided balloon sinuplasty of the equine nasomaxillary opening.
Authors: Bell Chris, Tatarniuk Dane, Carmalt James
Journal: Veterinary surgery : VS
Summary
# Editorial Summary: Endoscope-guided balloon sinuplasty of the equine nasomaxillary opening Chronic sinusitis and impaired sinus drainage remain challenging conditions in equine practice, often requiring invasive surgical approaches; this 2009 study by Bell, Tatarniuk and Carmalt evaluated whether balloon dilation of the nasomaxillary opening (NMO)—the primary drainage pathway for the maxillary sinuses—could improve drainage without extensive bone removal. Using a custom rigid balloon introducer placed endoscopically into the NMO, the researchers inflated a catheter to 6 atmospheres for three 30-second cycles in five cadaver heads and four standing horses, measuring drainage rates and assessing structural changes. Drainage from the caudal maxillary sinus improved significantly—approximately 1.5-fold—across all cadaver specimens (P=.001), with necropsy and endoscopic confirmation of sustained NMO dilation in both cadavers and live horses. The technique proved technically straightforward to perform in standing animals under endoscopic guidance, potentially offering farriers and veterinarians a minimally invasive alternative to conventional sinusotomy for horses with impaired sinus drainage. Whilst these encouraging preliminary findings establish feasibility and short-term efficacy, the authors rightly note that prospective clinical trials in naturally diseased sinuses are needed to determine whether improved drainage translates to meaningful therapeutic outcomes in affected horses.
Read the full abstract on PubMed
Practical Takeaways
- •Balloon sinuplasty offers a minimally invasive, standing-horse technique to improve maxillary sinus drainage, potentially beneficial for chronic sinusitis cases resistant to conventional flushing
- •The procedure is technically straightforward to perform under endoscopic guidance, making it accessible for equine practitioners with endoscopy capability
- •Further clinical trials in diseased sinuses are needed before routine adoption; this proof-of-concept study shows promise but lacks outcome data from naturally occurring sinus pathology
Key Findings
- •Endoscope-guided balloon sinuplasty successfully dilated the nasomaxillary opening in all 9 equine subjects (5 cadavers, 4 live horses)
- •Sinus drainage from the caudal maxillary sinus increased approximately 1.5-fold after sinuplasty in cadaver heads (P=0.001)
- •The technique was readily performed in standing horses under endoscopic guidance, demonstrating clinical applicability
- •Necropsy and endoscopic evaluation confirmed sustained dilation of the nasomaxillary opening in all subjects