Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Blood viscosity--a comparative study on three rotational instruments.

E Ernst, C Monshausen, A Matrai

    Biorheology
    |January 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Homoeopathy: past, present and future.

    British journal of clinical pharmacology·1998
    Same author

    Evidence-based PM&R?

    Archives of physical medicine and rehabilitation·1997
    Same author

    Acupuncturists have begun initiative to agree standards to improve safety.

    BMJ (Clinical research ed.)·1997
    Same author

    Autometallographic demonstration of zinc ions in rat sperm cells.

    Molecular human reproduction·1997
    Same author

    Genetic and physical mapping of the mouse host resistance locus Lgn1.

    Mammalian genome : official journal of the International Mammalian Genome Society·1997
    Same author

    Chelation therapy for peripheral arterial occlusive disease: a systematic review.

    Circulation·1997

    The Contraves LS-30 viscometer demonstrated superior stability and accuracy in blood viscometry across varying shear rates and pathological samples. Unlike other rotational viscometers, it maintained consistent performance without issues related to suspension instability.

    Area of Science:

    • Biomedical Engineering
    • Rheology
    • Medical Device Evaluation

    Background:

    • Accurate blood viscometry is crucial for diagnosing and managing various medical conditions.
    • Rotational viscometers are commonly used for measuring blood viscosity, but their performance can vary.

    Purpose of the Study:

    • To compare the performance of three rotational viscometers (Wells-Brookfield, Carri-Med, and Contraves LS-30) for blood viscometry.
    • To evaluate their accuracy and stability across different shear rates and with pathological blood samples.

    Main Methods:

    • Three rotational viscometers were utilized to measure blood viscosity at moderate and high shear rates.
    • Performance was assessed using both normal and pathological blood samples.
    • Coefficients of variation were calculated to determine measurement consistency.

    Related Experiment Videos

    Main Results:

    • At high shear, all viscometers showed coefficients of variation around 1%.
    • Lowering shear rates significantly increased variation for Wells-Brookfield (5-fold) and Carri-Med (3-fold).
    • The Carri-Med showed doubled variation with pathological samples, while the Contraves LS-30 maintained consistent low variation across all conditions, including with samples exhibiting suspension instability.

    Conclusions:

    • The Contraves LS-30 viscometer is the most reliable instrument for blood viscometry due to its consistent performance.
    • It is unaffected by declining shear rates or suspension instability issues present in pathological blood samples.
    • This suggests the Contraves LS-30 is superior for clinical applications requiring precise blood viscosity measurements.