Document Detail

Measurement of blood urea based in optical sensing by employ in hemodialysis treatment.
MedLine Citation:
PMID:  17946099     Owner:  NLM     Status:  MEDLINE    
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.
Gustavo Adolfo Martinez
Related Documents :
13981279 - Partitioning of body fluids in the lake nicaragua shark and three marine sharks.
8046119 - A new therapy of post-trauma brain oedema based on haemodynamic principles for brain vo...
3578559 - Extracellular fluid and plasma volumes during water immersion in nephrectomized dogs.
7192099 - The effect of osmotic pressure on the intestinal absorption of sulfafurazol and ethanol...
2581459 - Permeability of blood-brain barrier to various sized molecules.
1218819 - Postprandial osmotic and fluid changes in the upper jejunum after truncal vagotomy and ...
16375539 - Pressure broadening and fine-structure-dependent predissociation in oxygen b 3sigma(u)-...
23994759 - The tableting properties of melibiose monohydrate.
8241719 - Self-tonometry under microgravity conditions.
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    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Blood Chemical Analysis / instrumentation*
Diagnosis, Computer-Assisted / instrumentation*,  methods
Equipment Design
Equipment Failure Analysis
Optics and Photonics / instrumentation*
Photometry / instrumentation*
Renal Dialysis / instrumentation*
Reproducibility of Results
Sensitivity and Specificity
Urea / blood*
Reg. No./Substance:

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

Previous Document:  Robust contact detection in micromanipulation using computer vision microscopy.
Next Document:  Robust overnight monitoring of human vital signs by a non-contact respiration and heartbeat detector...