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

Non-invasively determined ambulatory venous pressure.

A Fronek1, R Kim, B Curran

  • 1Department of Surgery, University of California, San Diego, USA.

Vascular Medicine (London, England)
|February 24, 2001
PubMed
Summary

This study introduces a non-invasive method using photoplethysmography (PPG) to measure ambulatory venous pressure (AVP). The technique shows a strong correlation with direct measurements, offering a potential screening tool for venous hemodynamics.

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

Genomic profiling of intimal sarcoma reveals molecular subtypes with distinct tumor microenvironments and therapeutic implications.

ESMO open·2025
Same author

Effect of Various Toothpaste Tablets on Gloss and Surface Roughness of Resin-based Composite Materials.

Operative dentistry·2024
Same author

Topical anaesthesia and decongestion in rhinology.

Rhinology·2023
Same author

The KMT2A recombinome of acute leukemias in 2023.

Leukemia·2023
Same author

The use of teleconsultation and technology by the Aravind Eye Care System, India.

Community eye health·2022
Same author

Perilymph Fistula as a Complication of Eustachian Tube Dilation and Tympanoplasty.

Case reports in otolaryngology·2022

Area of Science:

  • Vascular Physiology
  • Medical Instrumentation
  • Non-invasive Diagnostics

Background:

  • Direct venous pressure measurement is invasive.
  • Exercise-induced plethysmographic changes resemble direct venous pressure changes.
  • A need exists for non-invasive methods to assess venous hemodynamics.

Purpose of the Study:

  • To establish a non-invasive method for determining ambulatory venous pressure (AVP) using photoplethysmography (PPG).
  • To identify the relationship between PPG signals and hydrostatic pressure during exercise.
  • To validate the non-invasive AVP measurement against direct measurements.

Main Methods:

  • Utilized a combination of photoplethysmography (PPG) and hydrostatic pressure calibration.
  • Performed standard foot dorsiflexion exercise with stepwise position changes to induce hydrostatic pressure variations.

Related Experiment Videos

  • Recorded simultaneous direct AVP and non-invasive PPG-derived AVP in patients and controls.

    • Main Results:

    • A logarithmic PPG/pressure relationship was identified.
    • Non-invasive AVP in controls was 19.24 mmHg (+/-8.79 SD).
    • In patients, PPG-derived AVP (33.07 mmHg +/-12.94 SD) correlated strongly (r=0.8850) with direct AVP (40.00 mmHg +/-10.83 SD).

    Conclusions:

    • Stepwise leg elevation reliably establishes a PPG/pressure curve for AVP determination.
    • The non-invasive PPG method provides accurate AVP measurements.
    • This non-invasive AVP determination can serve as a screening test for evaluating venous hemodynamics.