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Medline ® Abstract for Reference 6

of 'Endoscopic ultrasound: Normal pancreaticobiliary anatomy'

Improved model for teaching interventional EUS.
Bhutani MS, Aveyard M, Stills HF Jr
Gastrointest Endosc. 2000;52(3):400.
BACKGROUND: A swine model was previously developed for teaching endoscopic ultrasound (EUS). The purpose of this study was to improve this model and develop a method for creating focal lesions for EUS imaging and intervention.
METHODS: Experiments were performed in farm pigs (Sus scrofa) under general anesthesia. Under real-time EUS guidance attempts were made to create a submucosal lesion and a focal mediastinal lesion, to perform EUS-guided fine-needle aspiration of the pancreas, and to confirm the site of injection during "sham" EUS-guided celiac block.
RESULTS: A hypoechoic, submucosal mass was created in the stomach, which was then imaged by EUS and punctured trans-gastrically. Injection of saline solution in the mediastinum created a pseudo-mediastinal lymph node. A needle was then advanced trans-esophageally into the mediastinum to mimic EUS-guided fine-needle aspiration of a mediastinal lymph node. Abdominal exploration of the pigs after euthanasia confirmed injection of the sham celiac block around the celiac ganglion.
CONCLUSION: The swine model is not only useful for teaching normal EUS anatomy, but it may be a useful model for teaching EUS-guided intervention.
Program for Endoscopic Ultrasound, Veterans Affairs Medical Center, Dayton, Ohio, USA. Bhutanim@medicine.ufl.edu