| Pharyngeal and upper esophageal sphincter manometry in humans. | |
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MedLine Citation:
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PMID: 2305883 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Manometric studies of pharyngeal-upper esophageal sphincter (UES) coordination during swallowing have proven difficult. Asymmetry of the UES makes pressure measurements with a single, unoriented transducer suspect. Perfused systems lack the necessary response rate for measuring peak pharyngeal contraction pressures. Precise quantification of the coordination of pharyngeal contractions and UES relaxations during swallowing is difficult because of rapid pressure changes. We tested a modified solid-state transducer that measures pressures over 360 degrees. This transducer was placed in the proximal UES with a second, single transducer 5 cm proximal. Data were collected and analyzed with an Apple IIe microcomputer. A computer program was developed to measure nine timing sequences, UES resting pressure, nadir of UES relaxation, and pharyngeal contraction pressures. We studied 21 volunteers with six swallows each for dry, 5, 10, and 20 ml of water. Dry swallows differed significantly (P less than 0.05) from wet (5 ml). All timing sequences became progressively longer with increasing bolus size. Residual pressures were unchanged. Timing sequences were also measured for wet (5 ml) and dry swallows in seven volunteers using a Dent sleeve and single perfused orifice in the UES; no differences were seen. |
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Authors:
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J A Castell; C B Dalton; D O Castell |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The American journal of physiology Volume: 258 ISSN: 0002-9513 ISO Abbreviation: Am. J. Physiol. Publication Date: 1990 Feb |
Date Detail:
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Created Date: 1990-03-28 Completed Date: 1990-03-28 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 0370511 Medline TA: Am J Physiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: G173-8 Citation Subset: IM |
Affiliation:
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Gastroenterology Section, Bowman Gray School of Medicine, Wake Forest University, Winston-Salem, North Carolina 27103. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Deglutition Esophagus / physiology* Female Humans Male Manometry / instrumentation, methods Microcomputers Muscle Contraction* Pharynx / physiology* Reference Values Time Factors |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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