NDLI: Changes in Electrical and Physiological Properties of Human Blood During Storage

Content Provider	IEEE Xplore Digital Library
Author	Sezdi, M. Sonmezoglu, M. Tekeli, O. Ulgen, Y. Emerk, K.
Copyright Year	2005
Description	Author affiliation: Inst. of Biomed. Eng., Bogazici Univ., Istanbul (Sezdi, M.)
Abstract	In this study, the relationship between physiological parameters and electrical impedance changes of human blood and their further clinical implications are investigated. The study is performed on 255 erythrocyte suspension samples derived from 51 male donors. The samples are stored at 4degC and measurements are done on the $(0^{th},$ $10^{th},$ $21^{st},$ $35^{th}$ and $42^{nd}$ days of storage. The complex impedance is measured in the frequency range from 100 kHz to 1 MHz. The extracellular resistance $R_{e}$ and the effective cell membrane capacitance $C_{m}$ increased progressively with storage time while the intracellular resistance ri has decreased. Electrical impedance alterations are explained in terms of the measurements of $Na^{+},$ $K^{+}$ and $Cl^{-}$ concentrations, pH and ATP. Storage of red blood cells resulted in a rise in the extracellular $K^{+}$ and a fall in the extracellular $Na^{+},$ $Cl^{-},$ pH and ATP. Variance analysis (ANOVA) is used to evaluate any variations in blood parameters, in relation to storage time. According to the (SPSS) regression analysis, $R_{i}$ and $R_{e}$ are highly correlated with $Na^{+},$ K+ , $Cl^{-}$ and pH and, more significantly with ATP. The Cole-Cole parameters $F_{c}$ and alpha showed very little change with storage time and $C_{m}$ had weak correlations with blood parameters. Results show that complex impedance measurements may serve as a useful indicator in the quality assessment of blood bank stored blood samples
Starting Page	6710
Ending Page	6713
File Size	323231
Page Count	4
File Format	PDF
ISBN	0780387414
DOI	10.1109/IEMBS.2005.1616043
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-01-17
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Humans Blood Impedance measurement Extracellular Electrical resistance measurement Immune system Electric resistance Analysis of variance Frequency measurement Cells (biology) bioimpedance Na red blood cell blood storage lesions
Content Type	Text
Resource Type	Article

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