title: Evaluation of Janeway gastrostomy in llamas.
abstract: To provide long-term gastric fistulas for collection of third-compartment gastric contents, Janeway mucosal tube gastrostomy was performed, using a gastrointestinal stapling instrument, in 6 castrated adult male llamas. Mean operative time (+/- SEM) was 65 +/- 4.16 minutes. All llamas survived the 6-week study period. Of the 6 llamas, 5 did not have signs of abdominal pain and returned to preoperative food consumption amounts within 36 hours. One llama had mild intermittent signs of abdominal pain daily for 7 days before returning to preoperative amount of food consumption. All gastrostomies leaked small amounts of gastric contents around indwelling 6- to 8-mm cannulas at the skin surface. Gastric contents did not leak when cannulas were dislodged from gastrostomy stomas. Replacement of cannulas was rapid and easy. Gravity-flow sample collection was best accomplished through 8-mm cannulas. Mean (+/- SEM) weight loss was detected in all llamas (15 +/- 3 kg) and was associated with frequent nonfeeding and stress of sample collection. Gross necropsy findings were unremarkable in 5 of 6 llamas. All mucosal tube gastrostomies were patent, and there was no evidence of peritonitis. One llama had a single fibrous adhesion connecting the operative site with the ascending colon. Histologically, small (2.5- to 15-mm diameter) partial-thickness mucosal erosions identified at the tube gastrostomy-gastric wall junctions may have been associated with indwelling gastric cannulas. The Janeway gastrostomy was generally well tolerated in the llamas and should be considered as a useful long-term fistulation technique.
authors.affiliation: Veterinary Teaching Hospital, Oregon State University, Corvallis 97331.
authors.forename: W B
authors.initials: WB
authors.lastname: Schmotzer
authors.forename: M J
authors.initials: MJ
authors.lastname: Huber
authors.forename: A A
authors.initials: AA
authors.lastname: Frank
authors.forename: T W
authors.initials: TW
authors.lastname: Riebold
authors.forename: N C
authors.initials: NC
authors.lastname: Hollingshead
authors.forename: B B
authors.initials: BB
authors.lastname: Smith
mesh_terms: D000818:Animals; D002161:Camelids, New World; D005753:Gastric Mucosa / Q000166:cytology / Q000473:pathology; D005774:Gastrostomy / Q000295:instrumentation / Q000379:methods / Q000662:veterinary*; D008297:Male; D009919:Orchiectomy; D010149:Postoperative Pain / Q000503:physiopathology / Q000662:veterinary; D011183:Postoperative Complications / Q000473:pathology / Q000662:veterinary; D013997:Time Factors