418 Quantifying the Phase II Motor Patterns of the Human Small Bowel Migrating Motor Complex Using High Resolution Fiber Optic Manometry

In the canine small intestine several simple (S) and complex (C) patterns of propulsive and nonpropulsive activities were found. The nonpropulsive activity consisted of 1) stationary individual contractions (S) and 2) stationary clusters of contractions (C). Patterns leading to aboral propulsion of luminal contents were 1) propagating contractions (S), 2) propagating power contractions (S), 3) phase III of the migrating motor complex (C), and 4) migrating clusters of contractions (C). The propagation velocities of the propulsive motor patterns differed markedly; they increased in the following order: phase III, migrating clustered contractions, propagating power contractions, propagating contractions. A retrograde transport of luminal contents was produced by two different activities: 1) retrograde propagating contractions (S) and 2) retrograde power contractions (S). They were accompanied with enterogastric reflux.

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The migrating motor complex (MMC) and small bowel bacterial overgrowth (SBBO) in healthy volunteers during long term treatment with omeprazole and ranitidine.

European Journal of Gastroenterology & Hepatology ◽

10.1097/00042737-200112000-00109 ◽

2001 ◽

Vol 13 (12) ◽

pp. A31

Author(s):

&NA;

Keyword(s):

Small Bowel ◽

Healthy Volunteers ◽

Bacterial Overgrowth ◽

Term Treatment ◽

Migrating Motor Complex ◽

Small Bowel Bacterial Overgrowth ◽

Motor Complex ◽

Long Term Treatment

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Quantification ofin vivocolonic motor patterns in healthy humans before and after a meal revealed by high-resolution fiber-optic manometry

Neurogastroenterology & Motility ◽

10.1111/nmo.12408 ◽

2014 ◽

Vol 26 (10) ◽

pp. 1443-1457 ◽

Cited By ~ 90

Author(s):

P. G. Dinning ◽

L. Wiklendt ◽

L. Maslen ◽

I. Gibbins ◽

V. Patton ◽

...

Keyword(s):

High Resolution ◽

Fiber Optic ◽

Motor Patterns ◽

Healthy Humans ◽

Before And After

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Response of migrating motor complex to variation of fasting intraluminal content

AJP Gastrointestinal and Liver Physiology ◽

10.1152/ajpgi.1992.263.4.g533 ◽

1992 ◽

Vol 263 (4) ◽

pp. G533-G537

Author(s):

D. Smith ◽

B. Waldron ◽

F. C. Campbell

Keyword(s):

Gastrointestinal Tract ◽

Motor Activity ◽

Phase Ii ◽

Migrating Motor Complex ◽

Phase Iii ◽

Liquid Content ◽

Volume Changes ◽

Contraction Amplitude ◽

Motor Complex ◽

Upper Gastrointestinal

The characteristics of the phases of the migrating motor complex (MMC) were studied in the antrum, duodenum, and jejunum after alteration of intraluminal gas and acaloric fluid in 17 healthy volunteers. Aspiration of gas and fluid from the upper gastrointestinal tract reduced motor activity. In the antrum and duodenum, phase II contraction amplitude decreased, while in the duodenum and jejunum, the duration of phase II decreased and phase I increased. Phase III contraction frequency decreased in the duodenum only. Intragastric instillation of gas caused an increase of phase II duration and contraction amplitude in all regions. Similar effects were observed after intragastric instillation of fluid. Fasting periodic motor activity is responsive to volume changes of intraluminal gas and acaloric liquid content.

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