Figure 7 - Illustration of hypotensive (incompetent) peristaltic contractions.
From the following article
W.G. Paterson, Raj K. Goyal and Fortunée Irene Habib
GI Motility online (2006)
doi:10.1038/gimo20
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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