| Flow through a mechanical distraction enterogenesis device: a pilot test. | |
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MedLine Citation:
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PMID: 21571307 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: We tested the coupling portion of a prototype intraluminal distraction enterogenesis device to allow flow-through of simulated enteric contents (SEC) in both pig and human jejunum. MATERIALS AND METHODS: SEC was made using 80% corn syrup. Ten-cm pig and human intestinal segments had a spoke-shaped 2.2 cm coupling adaptor sutured in place, intraluminally. The adaptor had a flow-through area of 33.6 mm(2). SEC was pumped into the proximal part of the intestinal segment at 0.083 mL/s. The times to first passage of SEC through the coupler (first drop), 10 mL, and 20 mL of SEC eluted from the distal end were recorded. RESULTS: Mean time to first drop elution was 155 ± 38 s with pig, and 149 ± 22 s with human bowel (P = 0.8). This corresponded to a hydrostatic pressure of 37.5 mmHg before the initial drop passed through. Mean flow rates were 0.094 mL/s in pig bowel and 0.084 mL/s in human bowel (P = 0.09). To account for occlusion from luminal debris, a 75% occlusion of coupler holes was studied in the smaller pig bowel to investigate if reductions in flow-through area could be tolerated. Mean time to first drop increased slightly to 171 ± 15 s, but the elution rate stayed the same (P = 0.5). CONCLUSIONS: After a physiologic level of initial pressure buildup allowing the first drop of SEC to pass the coupling adaptor, our prototype intestinal coupling adaptor did not obstruct flow-through of SEC, even after a 75% decrease in flow-through area. This type of attachment represents a viable approach to placing a device in-continuity without obstructing flow of enteric contents. |
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Authors:
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Eiichi A Miyasaka; Manabu Okawada; Richard Herman; Brent Utter; Jonathan Luntz; Diann Brei; Daniel H Teitelbaum |
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Publication Detail:
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Type: In Vitro; Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S. Date: 2011-04-19 |
Journal Detail:
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Title: The Journal of surgical research Volume: 170 ISSN: 1095-8673 ISO Abbreviation: J. Surg. Res. Publication Date: 2011 Oct |
Date Detail:
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Created Date: 2011-09-16 Completed Date: 2011-11-15 Revised Date: 2013-02-08 |
Medline Journal Info:
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Nlm Unique ID: 0376340 Medline TA: J Surg Res Country: United States |
Other Details:
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Languages: eng Pagination: 179-84 Citation Subset: IM |
Copyright Information:
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Copyright © 2011 Elsevier Inc. All rights reserved. |
Affiliation:
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Section of Pediatric Surgery, Department of Surgery and the C.S. Mott Children's Hospital, University of Michigan, Ann Arbor, Michigan, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Feasibility Studies Female Humans Intestinal Obstruction / prevention & control Jejunum / growth & development, physiology*, surgery* Models, Biological Pilot Projects Pressure Prostheses and Implants* Prosthesis Design* Short Bowel Syndrome / physiopathology, surgery* Stress, Mechanical Sus scrofa Viscosity |
| Grant Support | |
ID/Acronym/Agency:
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1R43DK085765-01A1/DK/NIDDK NIH HHS; FD003787-1/FD/FDA HHS; R21 DK075413-01A1/DK/NIDDK NIH HHS; R43 DK085765-01A1/DK/NIDDK NIH HHS |
| Comments/Corrections | |
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