Successful Treatment of a Persistent Oroantral Fistula via Transbuccal and Transnasal Endoscopic Debridement in a Horse

Abstract

We report an unusual case of a young Quarter Horse with a large dental fracture fragment displaced into the maxillary sinus, leaving an oroantral communication that caused food impaction and metaplastic calcification in the sinus and facial deformation with cutaneous fistulation. Oral extraction of a remaining tooth fragment from its alveolus was succeeded by a maxillary sinusotomy for removal of the abnormal sinus contents. Since the oroantral fistula did not heal spontaneously following the placement of a silicone dental prosthesis, minimally invasive transbuccal and transnasal endoscopic approaches were used to encourage closure of the oroantral fistula by alveolar granulation. The clinical, diagnostic, and therapeutic features of this case may be helpful to clinicians when dealing with similar cases.

Successful treatment of a chronic oroantral fistula infected with extensively drug resistant bacteria using long‐term oesophageal tube feeding and several non‐conventional treatments in a horse

“…2 Few reports of successful treatment of chronic OAF exist. [2][3][4][5][6] Occurrence of potentially life-threatening multidrug-resistant (MDR) infections are becoming more common in equine hospitals, with up to 48% of infections occurring post procedurally. 7 The emergence of MDR bacteria is resulting in the development of alternative approaches for therapeutic management.…”

“…a Number correlates with E. coli isolates numbered in the genetic tree (supplementary figure). Multi-locus sequence type of E. coli[1] not determined (alleles: adk(6), fumC(23), gyrB(4), icd(85), mdh(7), purA(73), recA(6));[2] 1340;[3] 88;[4] 1340; [5a] 533; [5b] 1340; [6] 1642. The sequence data have been submitted to publicly available repository: https://www.ncbi.nlm.nih.gov/bioproject/PRJNA637162.…”