Browsing by Author "Sage, Abby M"
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Item Evaluation of gastrointestinal activity patterns in healthy horses using B mode and Doppler ultrasonography(Canadian Veterinary Journal, 2005) Mitchell, Colin F; Malone, Erin D; Sage, Abby M; Niksich, KatieHealthy adult horses were examined by using transabdominal ultrasonography to quantitatively and qualitatively evaluate activity of the jejunum, cecum, and colon with B mode and Doppler techniques. Doppler ultrasound was used to assess jejunal peristaltic activity. Examinations were performed on multiple occasions under imposed colic evaluation conditions, including fasting, nasogastric intubation, and xylazine sedation. In fasted horses, jejunal visibility was increased and jejunal, cecal, and colonic activity was decreased. The stomach was displaced ventrally and was visualized ventral to the costochondral junction. Xylazine sedation in fed horses had minimal effects; however, in fasted horses, xylazine significantly decreased jejunal and cecal activity. Nasogastric intubation in fasted horses had no observable effects on activity, but moved the stomach dorsally. B mode and Doppler jejunal activity were strongly correlated. Prior feeding and sedation status need to be considered when interpreting the results of equine abdominal ultrasound examinations. Doppler techniques may be useful for assessing jejunal activity.Item Thoracoscopic-Assisted Diaphragmatic Hernia Repair Using a Thoracic Rib Resection(Veterinary Surgery, 2001) Malone, Erin D; Farnsworth, Kelly; Lennox, Tiffany; Tomlinson, Julia; Sage, Abby Musing thoracic rib resection aided by thoracoscopy and a flank incision. Study Design—Case report. Animal Population—One client-owned horse. Results—A six-year-old Dutch warmblood gelding was admitted for colic-associated colonic incarceration in a diaphragmatic hernia. Seven weeks after the initial colic surgery, the gelding underwent surgery to repair the defect. Thoracoscopy and a flank incision were used to identify the location of the hernia and the subsequent site of rib resection. The stomach was adhered to the edges of the defect, leaving only a small residual hole. Resection of the 14th rib provided excellent exposure of the defect and closure of the remaining hernia. Conclusion and Clinical Relevance—Thoracic rib resection can provide access to diaphragmatic hernias in adult horses. Thoracoscopy or a flank incision, or both, may aid in determining which rib is best resected.