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Measurement of blood filling in lower limbs by bioimpedance method

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F17%3APU136940" target="_blank" >RIV/00216305:26220/17:PU136940 - isvavai.cz</a>

  • Alternative codes found

    RIV/00159816:_____/17:00067629

  • Result on the web

    <a href="https://biomed.papers.upol.cz/pdfs/dou/9900/00/500.pdf" target="_blank" >https://biomed.papers.upol.cz/pdfs/dou/9900/00/500.pdf</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.5507/bp.2017.055" target="_blank" >10.5507/bp.2017.055</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Measurement of blood filling in lower limbs by bioimpedance method

  • Original language description

    Background: Cardiovascular diseases are the leading causes of mortality and morbidity in modern society. The autonomic nervous systems innervate blood vessel walls and regulate contraction and wall tension. The head-up tilt test is frequently performed for evaluating sympathetic nervous system function. The filling of the lower extremities during the head-up tilt test is measured by the bioimpedance method. Increased blood volume in the area of interest increases the electrical impedance of this area. Methods: We used a mathematical fitting model to express the measured data. A B time constant of a decreased bioimpedance signal during a head-up tilt was calculated for the right leg during various time intervals of tilt duration. We optimized the duration in a study protocol based on corresponding measured data and a calculated model. A group of 22 healthy volunteers (11 men and 11 women) participated in the study protocol: the protocol included a 2-minute supine position and 5-minute head-up tilt test. Results: According to the Mann-Whitney test, there were no statistical differences in the B constant between the groups of men and women. Our results showed the optimal time duration of the head-up tilt test to be about 270 s. Conclusions: Calculating the time constant for decreased bioimpedance during a head-up tilt test might lead to a simple pre-diagnostic method for performing a non-invasive evaluation of the cardiovascular system.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20601 - Medical engineering

Result continuities

  • Project

  • Continuities

    S - Specificky vyzkum na vysokych skolach

Others

  • Publication year

    2017

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    BIOMEDICAL PAPERS-OLOMOUC

  • ISSN

    1213-8118

  • e-ISSN

    1804-7521

  • Volume of the periodical

    neuveden

  • Issue of the periodical within the volume

    161

  • Country of publishing house

    CZ - CZECH REPUBLIC

  • Number of pages

    5

  • Pages from-to

    „S15“-„S19“

  • UT code for WoS article

    000428945000003

  • EID of the result in the Scopus database