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

Noninvasive cardiac output estimation: a preliminary study

J D Redling1, M Akay

  • 1Department of Biomedical Engineering, Rutgers University, Piscataway, NJ 08854, USA.

Biological Cybernetics
|August 1, 1997
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

Sub-Chronic Peroneal Nerve Stimulation Lowers Ambulatory Blood Pressure in Spontaneously Hypertensive Rats.

IEEE open journal of engineering in medicine and biology·2024
Same author

Neuromodulation Improves Stress Urinary Incontinence-Like Deficits in Female Rabbits.

IEEE open journal of engineering in medicine and biology·2024
Same author

Predictive value of magnetic resonance imaging diffusion parameters using artificial intelligence in low-and intermediate-risk prostate cancer patients treated with stereotactic ablative radiotherapy: A pilot study.

Radiography (London, England : 1995)·2024
Same author

Effects of imatinib mesylate on renin-angiotensin system (RAS) activity during the clinical course of chronic myeloid leukaemia.

The Journal of international medical research·2009
Same author

Investigating the interaction between oncogene and tumor suppressor protein.

IEEE transactions on information technology in biomedicine : a publication of the IEEE Engineering in Medicine and Biology Society·2009
Same author

Influence of peripheral chemodenervation on the complexity of respiratory patterns during early maturation.

Medical & biological engineering & computing·2006

A new noninvasive method accurately estimates cardiac output using external pressure pulses and Fast Fourier Transform (FFT) analysis. This automated system shows promise for monitoring patients, offering an alternative to invasive thermodilution.

Area of Science:

  • Biomedical Engineering
  • Cardiovascular Physiology
  • Medical Instrumentation

Background:

  • Clinical need for noninvasive cardiac output (CO) monitoring exists, contrasting with the standard invasive thermodilution method.
  • Current noninvasive techniques often lack accuracy or ease of use, limiting widespread clinical adoption.
  • Accurate CO assessment is crucial for managing critically ill patients, especially post-cardiac surgery.

Purpose of the Study:

  • To develop and evaluate a novel, automated system for noninvasive cardiac output estimation.
  • To assess the accuracy of the proposed method against the gold standard invasive thermodilution technique.
  • To explore the potential of this method for continuous hemodynamic monitoring.

Main Methods:

  • Utilized Fast Fourier Transform (FFT) analysis on externally measured carotid and femoral pressure pulses.

Related Experiment Videos

  • Computed aortic transfer functions from digitally filtered pulse data.
  • Employed a tapered aortic model, optimized via a simplex algorithm, to match experimental transfer functions.
  • Derived aortic input impedance and used it with carotid pulse data to calculate aortic flow.

    • Main Results:

    • The noninvasive method demonstrated good agreement with invasive thermodilution measurements in post-cardiac surgery patients (54 patients, 59 records).
    • The system requires relatively few pulses for analysis and exhibits robustness against noise artifacts.
    • Preliminary findings suggest the method's potential for tracking dynamic changes in cardiac output over time.

    Conclusions:

    • The developed automated system provides a viable noninvasive approach for cardiac output estimation.
    • This method offers a promising, less invasive alternative to thermodilution for hemodynamic monitoring.
    • Further research is warranted to validate its use in monitoring hemodynamically unstable patient populations.