Fiberoptic gastroduodenoscopy in the horse.

The research article describes the development and application of a method for performing fiberoptic gastroduodenoscopy and biopsy in large horses. It covers how the procedure was performed, how long food was withheld before it, observations and findings from the procedure, and cases where mucosal biopsy specimens were taken.

Development and Use of the Method

• The study introduced a new method of performing fiberoptic gastroduodenoscopy and biopsy on large horses. This is a diagnostic procedure used to visually examine the stomach and duodenum—the first part of the small intestine. The method involves the use of a long (275 cm) and relatively thin (13.5 mm) fiberendoscope.

The Procedure

• To prepare for the examination, food was withheld from the horses for a period of 24 to 48 hours. This was likely done to ensure the stomach and duodenum would be empty and thus easier to examine.
• The fiberendoscope was used to visualise the stomach and the proximal portion of the duodenum, i.e., the part of the intestine closest to the stomach.

Findings from the Gastroduodenoscopies

• The researchers were able to easily visualise the gastric and duodenal structures in over 50 horses. This means the images provided by the fiberendoscope were clear enough to examine these structures in great detail.
• Various types of lesions were detected in the examined horses. These included parasitic lesions, gastric ulcers, gastric neoplasia (abnormal tissue growth or tumours in the stomach), and pyloric stenosis (a narrowing of the opening from the stomach to the duodenum).

Biopsy in Selected Cases

• In certain cases, the researchers also obtained mucosal biopsy specimens. These samples of tissue taken from the mucus membrane lining of the stomach or duodenum can be analysed in a lab to determine the cause of any observed abnormalities or to confirm a diagnosis.

The research provides valuable insights into the effectiveness of the developed method for conducting fiberoptic gastroduodenoscopy and biopsy in large horses. Additionally, it confirms the potential for detecting a variety of gastric and duodenal conditions, contributing to improved veterinary diagnostic practices and animal welfare.