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

Modeling methodology for vascular input impedance determination and interpretation

S H Bennett1

  • 1Department of Pediatrics, University of California, Davis 95616.

Journal of Applied Physiology (Bethesda, Md. : 1985)
|January 1, 1994
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

The use of toxic polynitro derivatives in pest control; the stability of dinitro-o-cresol in compounded products.

The Annals of applied biology·2010
Same author

Color M-mode propagation velocity, but not its ratio to early diastolic inflow velocity, changes throughout gestation in normal human fetuses.

Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology·2008
Same author

Hemodynamic effects of positive end-expiratory pressure during partial liquid ventilation in newborn lambs.

Journal of pediatric surgery·2001
Same author

Form and function of fetal and neonatal pulmonary arterial bifurcations.

American journal of physiology. Heart and circulatory physiology·2000
Same author

Effects of correction of hypocalcemia on cardiac function in the newborn lamb.

Biology of the neonate·2000
Same author

Role of nitric oxide in cardiovascular responses to endotoxemia in neonatal lambs.

Biology of the neonate·1999

This study introduces a new method to analyze pulmonary vascular reflections using frequency response. Findings reveal distinct reflection sites in pulmonary circulation, potentially influenced by ventilation.

Area of Science:

  • Cardiovascular Physiology
  • Biomedical Engineering
  • Pulmonary Circulation Dynamics

Background:

  • Pulse wave reflections are crucial in the pulmonary vascular system.
  • Existing methods for vascular frequency response estimation have limitations.
  • Understanding these reflections is key to diagnosing pulmonary vascular conditions.

Purpose of the Study:

  • To develop and validate a novel method for determining the broadband frequency response of pulmonary input impedance up to 100 Hz.
  • To interpret input impedance using structural and functional modeling, including inverse scattering and time series analysis.
  • To apply these methods to physiological data and investigate vascular-ventilatory interactions.

Main Methods:

  • A new method using a wavelet-based data model to calculate accurate vascular frequency response from physiological waveforms.

Related Experiment Videos

  • Inverse scattering methodology to identify longitudinal distributions of reflection sites from frequency response echoes.
  • Time series analysis employing a generalized principle of superposition to describe vascular interactions.

    • Main Results:

    • The study successfully determined the broadband frequency response of pulmonary input impedance.
    • Analysis revealed a discrete longitudinal distribution of reflection sites within the pulmonary vasculature.
    • The observed frequency response suggests these reflection sites may be influenced by mechanical ventilation.

    Conclusions:

    • The developed method provides a comprehensive approach to analyzing pulmonary vascular wave dynamics.
    • The findings highlight the importance of pulse wave reflections and their anatomical distribution.
    • The study demonstrates the potential impact of ventilation on pulmonary vascular wave mechanics.