Figure 7 - Illustration of hypotensive (incompetent) peristaltic contractions.

From the following article

Esophageal motility disorders

W.G. Paterson, Raj K. Goyal and Fortunée Irene Habib

GI Motility online (2006)



These are associated with escape of barium bolus into the proximal esophagus due to a weak peristaltic contraction wave. It shows a simultaneous manometry and fluoroscopy of a barium swallow ( Source: Adapted from Kahrilas PJ, Dodds, WJ, Hogan WJ. Gastroenterology 1988;94:73)

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