Maneuvering the Endoscope

For retroflexion in the antrum, the instrument tip is angled upward (see p. 44), and the field of view is slowly tracked across the angulus.

The angulus is inspected, and the instrument is slowly withdrawn into the air-distended body of the stomach to inspect the fundus and cardia from below (Fig. 2.45).

- Fig. 2.45 Retroflexion across the angulus f View of the cardia where the endoscope enters the stomach f View of the cardia where the endoscope enters the stomach

d With further tip deflection and slight withdrawal, the endoscope shaft can be seen in the fundus b The view is swept across the angulus by elevating the instrument tip d With further tip deflection and slight withdrawal, the endoscope shaft can be seen in the fundus c The angulus is at the center of the image, with the body above and the antrum at the lower right. The instrument is rotated to fully inspect the angulus b The view is swept across the angulus by elevating the instrument tip a The shaft of the endoscope is relatively straight with the tip at the body-antrum junction. The angulus is seen in the upper left part of the image

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