Video 2 - Vigorous achalsia.
From the following article
W.G. Paterson, Raj K. Goyal and Fortunée Irene Habib
GI Motility online (2006)
doi:10.1038/gimo20
In patients with vigorous achalasia, repetitive non-peristaltic contractions are observed along with non-relaxing lower esophageal sphincter.
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