New methods of studying small intestine motility
Ehrlein, H.J.; Schemann, M.
Deutsche Tierärztliche Wochenschrift 94(1): 23-27
1987
ISSN/ISBN: 0341-6593 PMID: 3545758 Document Number: 296559
To recognize contractile patterns of the small intestine it is necessary to record motility by closely spaced transducers, to analyse the temporal and spatial relation of contractions with the aid of a computer, and to use simultaneously videofluoroscopy. In conscious dogs such methods were used to study the motility of jejunal segment. Several contractile patterns were found. Non-propulsive patterns were stationary individual contractions, and stationary clusters of contractions. Propulsive patterns consisted of migrating clustered contractions, the migrating activity front of the interdigestive motility, aborally and orally propagating contractions, and aborally and orally propagating power contractions. Digestive contractile patterns of the small intestine were influenced by nutrients and gastrointestinal hormone (neurotensin, 5-hydroxytryptophan). The length of spread of propagating contractions were of great importance for the transit rate of chyme.