Figure 4 Example plots of high-resolution gastroduodenal manometry

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Figure 4 Example plots of high-resolution gastroduodenal manometry Figure 4 | Example plots of high-resolution gastroduodenal manometry. High-resolution gastroduodenal manometry plots are shown for normal fasting (part a) and postprandial (part b) motility. Antral motility is characterized by high-amplitude contractions with a maximal contraction rate of ~3 per min. Amplitudes of contraction in the small bowel are lower, but frequency is higher (up to ~12 per min). During the fasting state (part a), there is a constant transition between phases I to III of the interdigestive migrating motor complex (MMC) with motor quiescence during phase I, irregular contractions that are propagated over only smaller segments during phase II and regular, aborally propagated contractions that usually start in the stomach and traverse long segments of the small bowel during phase III. Postprandially (part b), MMC activity is interrupted and replaced by irregular contractions that serve to mix the luminal contents and to slowly propel them towards the more distal intestine. Desc., descending; Prox., proximal. Keller, J. et al. (2018) Advances in the diagnosis and classification of gastric and intestinal motility disorders Nat. Rev. Gastroenterol. Hepatol. doi:10.1038/nrgastro.2018.7