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

Nonlinear fluid systems identified by random noise input

E Delavault, G Saumon, R Georges

    Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology
    |December 1, 1982
    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

    Jet-cooled rovibrational spectroscopy of methoxyphenols using two complementary FTIR and QCL based spectrometers.

    The Journal of chemical physics·2019
    Same author

    High enthalpy source dedicated to quantitative infrared emission spectroscopy of gas flows at elevated temperatures.

    The Review of scientific instruments·2019
    Same author

    SU-E-T-291: Dosimetry of Double Scattered Proton Beam Fields Used for Cranio-Spinal Irradiation.

    Medical physics·2017
    Same author

    [Trauma and resilience among children 3 to 6 years old in three neighborhoods of Port-au-Prince after the 2010 earthquake in Haiti].

    L'Encephale·2016
    Same author

    The Water Dimer Investigated in the 2OH Spectral Range Using Cavity Ring-Down Spectroscopy.

    The journal of physical chemistry. A·2015
    Same author

    Strong thermal nonequilibrium in hypersonic CO and CH4 probed by CRDS.

    The Journal of chemical physics·2015
    Same journal

    Metabolic control of cardiac output response to exercise in McArdle's disease.

    Journal of applied physiology: respiratory, environmental and exercise physiology·1984
    Same journal

    Hypoxic insomnia: effects of carbon monoxide and acclimatization.

    Journal of applied physiology: respiratory, environmental and exercise physiology·1984
    Same journal

    Quiet-breathing vs. panting methods for determination of specific airway conductance.

    Journal of applied physiology: respiratory, environmental and exercise physiology·1984
    Same journal

    A new method for raising neonatal rabbits in a hypoxic environment.

    Journal of applied physiology: respiratory, environmental and exercise physiology·1984
    Same journal

    Modification of the cutaneous vascular response to exercise by local skin temperature.

    Journal of applied physiology: respiratory, environmental and exercise physiology·1984
    Same journal

    Temperature regulation during treadmill exercise in the rat.

    Journal of applied physiology: respiratory, environmental and exercise physiology·1984
    See all related articles

    New impedance measurement techniques accurately assess nonlinear fluid systems. This method corrects errors in respiratory impedance measurements for intubated patients by separating subject impedance from tube effects.

    Area of Science:

    • Fluid dynamics
    • Biomedical engineering
    • Respiratory mechanics

    Background:

    • Traditional Fourier analysis for impedance measurement is inaccurate in nonlinear fluid systems.
    • Nonlinear pressure drops (p = K X V²) complicate standard impedance measurements in physiological systems.

    Purpose of the Study:

    • To develop and validate a novel method for accurate impedance measurement in nonlinear fluid systems.
    • To enable reliable respiratory impedance measurements in intubated patients.

    Main Methods:

    • Processing multiple impedance data sets at varying input levels.
    • Applying the new method to simulations, nonlinear resistances, and intubation tubings.

    Main Results:

    • Accurate estimation of the nonlinear coefficient (K).

    Related Experiment Videos

  • Precise determination of the linear impedance of the system.
  • Successful separation of subject respiratory impedance from endotracheal tube nonlinearities.

    • Conclusions:

    • The novel impedance measurement technique overcomes limitations of Fourier analysis in nonlinear systems.
    • This method allows accurate respiratory impedance assessment in intubated patients.
    • The technique effectively distinguishes between patient respiratory system and airway device impedance.