Document Detail


Measurement of blood urea based in optical sensing by employ in hemodialysis treatment.
MedLine Citation:
PMID:  17946099     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The present paper shows the design a development and on-line measure system for blood urea concentration during dialysis treatment, using non-invasive technical by employ the optical sensing in the visible range. Previous results obtained in Military Hospital Centre in Mexico DF., displayed experimental evidence of a clear correlation between blood urea contents and optical absorbance in the red region obtained through the arterial line in hemodialysis machine. Our hypothesis considers that the cause of this dependence is the volume change of the red cells with the urea concentration due to osmotic pressure and regulation mechanism in cellular volume. The reduction in the cells volume would lead to decrease in the proportional absorbance value. Measurements were performed during hemodialysis procedures in the Military Hospital Center in Mexico City, show good correlation. The most relevant interfering parameter was the water extraction along the dialysis treatment, given that changes in the blood fluid and arterial pressure (hypertension, hypotension), thus affecting the measurement principle.
Authors:
Gustavo Adolfo Martinez
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Publication Detail:
Type:  Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference     Volume:  1     ISSN:  1557-170X     ISO Abbreviation:  Conf Proc IEEE Eng Med Biol Soc     Publication Date:  2006  
Date Detail:
Created Date:  2007-10-23     Completed Date:  2008-03-13     Revised Date:  2014-08-21    
Medline Journal Info:
Nlm Unique ID:  101243413     Medline TA:  Conf Proc IEEE Eng Med Biol Soc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2231-4     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Blood Chemical Analysis / instrumentation*
Diagnosis, Computer-Assisted / instrumentation*,  methods
Equipment Design
Equipment Failure Analysis
Humans
Optics and Photonics / instrumentation*
Photometry / instrumentation*
Renal Dialysis / instrumentation*
Reproducibility of Results
Sensitivity and Specificity
Transducers*
Urea / blood*
Chemical
Reg. No./Substance:
8W8T17847W/Urea

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


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