Document Detail

Use of photoplethysmography to determine gastrointestinal perfusion pressure: an experimental canine model.
MedLine Citation:
PMID:  12759502     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: To develop an experimental model to assess the parietal perfusion pressure (PPP) of the digestive tract using photoplethysmography. MATERIALS AND METHODS: Twenty-two mongrel dogs were used. Progressive external compression was applied to the intestinal wall and the PPP was assessed with photoplethysmography. The study group was divided into two groups. In group 1 PPP was measured at the levels of the stomach, duodenum, jejunum and transverse colon. In group 2 PPP was measured after temporary occlusion of the truncal and marginal circulation of the jejunum to provide further variables. RESULTS: The PPP decreased significantly for each successive distal section. Correlation coefficients and indices for PPP and mean arterial pressures were statistically significant (p < 0.005). Truncal occlusion provoked a drop in PPP whereas marginal occlusion scarcely modified the basal results. CONCLUSIONS: Photoplethysmography, through measurements of the residual arterial wave amplitude, is a valid method of determining quantitatively the PPP of the digestive tract and could be useful in a clinical environment.
E Garcia-Granero; S A Garcia; R Alos; J Calvete; B Flor-Lorente; J Willatt; S Lledo
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Digestive surgery     Volume:  20     ISSN:  0253-4886     ISO Abbreviation:  Dig Surg     Publication Date:  2003  
Date Detail:
Created Date:  2003-05-21     Completed Date:  2003-10-23     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8501808     Medline TA:  Dig Surg     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  222-8     Citation Subset:  IM    
Copyright Information:
Copyright 2003 S. Karger AG, Basel
Department of General Surgery and Coloproctology Unit, Hospital Clínico Universitario, University of Valencia, Valencia, Spain.
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MeSH Terms
Blood Circulation / physiology*
Blood Pressure*
Blood Pressure Determination / methods
Digestive System / blood supply
Digestive System Surgical Procedures*
Manometry / methods
Models, Animal
Monitoring, Intraoperative
Photoplethysmography / methods*
Regional Blood Flow

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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