Document Detail


Accommodation of the abdomen to its content: integrated abdomino-thoracic response.
MedLine Citation:
PMID:  22188369     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Background  We previously showed that changes in intra-abdominal content induce a volume-dependent muscular response of the anterior abdominal wall and the diaphragm. We aimed to determine the contribution of the thorax to abdominal accommodation and the influence of the intra-abdominal expansion rate. Methods  Gas (1440 mL total load) was infused into the colon of nine healthy subjects, while abdomino-thoracic perimeters (by tape measure), electromyography (EMG) activity of the diaphragm (via six ring electrodes over an esophageal tube in the hiatus), intercostals and anterior abdominal wall (via five pairs of surface electrodes) and the position of the diaphragm by ultrasonography were measured. Infusion rates of 24, 48, and 96 mL min(-1) were tested on separate days. Key Results  Gas infusion induced anterior abdominal wall contraction (18 ± 1% EMG increment; P < 0.001) with relatively modest girth increment (4.9 ± 0.9 mm; P = 0.001), diaphragmatic relaxation (by 15 ± 1%; P < 0.001) with cephalad displacement (by 23 ± 6 mm; P = 0.005), and intercostal contraction (by 19 ± 2%; P < 0.001) with increased thoracic perimeter (by 2.0 ± 0.5 mm; P = 0.009). Responses were similar with the three infusion rates. Conclusions & Inferences  Accommodation of intra-abdominal loads involves a volume-related integrated abdomino-thoracic response regardless of the expansion rate.
Authors:
E Burri; D Cisternas; A Villoria; A Accarino; A Soldevilla; J-R Malagelada; F Azpiroz
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-21
Journal Detail:
Title:  Neurogastroenterology and motility : the official journal of the European Gastrointestinal Motility Society     Volume:  -     ISSN:  1365-2982     ISO Abbreviation:  -     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9432572     Medline TA:  Neurogastroenterol Motil     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2011 Blackwell Publishing Ltd.
Affiliation:
Digestive System Research Unit, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd), University Hospital Vall d'Hebron, Barcelona, Spain Department of Medicine, Autonomous University of Barcelona, Barcelona, Spain Department of Gastroenterology and Hepatology, University Hospital Basel, Basel, Switzerland Departamento de Gastroenterología. Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile Department of Physics, Polytechnic University of Catalonia, Barcelona, Spain.
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