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

[Venous flow velocity patterns and cardiac function studied by Doppler echocardiography].

Y Himura1, T Kannagi, H Tanio

  • 1Department of Internal Medicine, Faculty of Medicine, Kyoto University.

Journal of Cardiology
|September 1, 1988
PubMed
Summary

The VI ratio, derived from hepatic venous flow velocity, effectively indicates cardiac pump function. This ratio shows strong correlations with cardiac index in various heart conditions, offering valuable diagnostic insights.

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

HA-1077 suppress both proliferation of vascular smooth muscle cells and c-fos mRNA induction.

Japanese circulation journal·1992
Same author

The effect of alpha 1-blocker, bunazosin on a murine model of congestive heart failure induced by viral myocarditis.

Japanese circulation journal·1992
Same author

Left ventricular relaxation in dilated cardiomyopathy: relation to loading conditions and regional nonuniformity.

Journal of the American College of Cardiology·1992
Same author

Anomalous left brachiocephalic vein: CT findings.

Journal of computer assisted tomography·1992
Same author

Combination treatment with ribavirin and interferon for coxsackievirus B3 replication.

The Journal of laboratory and clinical medicine·1992
Same author

Genetic analysis of dilated cardiomyopathy--HLA and immunoglobulin genes may confer susceptibility.

Japanese circulation journal·1992

Area of Science:

  • Cardiology
  • Hemodynamics
  • Diagnostic Imaging

Context:

  • Assessing cardiac pump function is crucial for diagnosing and managing heart disease.
  • Hepatic venous flow velocity (VFV) and its derived metrics offer a non-invasive window into cardiac performance.
  • Understanding the relationship between VFV patterns and cardiac output is essential for refining diagnostic tools.

Purpose:

  • To investigate the correlation between central venous flow velocity (VFV) parameters and cardiac pump function, specifically the cardiac index (CI).
  • To evaluate the utility of the VI ratio, calculated from VFV, as an indicator of cardiac pump efficiency in patients with and without atrial fibrillation.
  • To explore how changes in cardiac rhythm (sinus rhythm vs. atrial fibrillation) affect the VFV pattern and its relationship with CI.

Summary:

Related Experiment Videos

  • Doppler echocardiography was used to record hepatic venous flow velocity in normal subjects and heart disease patients. The systolic time-velocity integral (VIs) and diastolic time-velocity integral (VId) were computed to derive the VI ratio [VIs/(VIs + VId)].
  • A strong positive correlation was observed between the VI ratio and cardiac index (CI) in patients with atrial fibrillation (r = 0.80), particularly those without tricuspid regurgitation.
  • In patients with sinus rhythm, an inverse correlation was found between the VI ratio and CI (r = -0.70) when the VI ratio exceeded 0.75, suggesting differing hemodynamic responses based on atrial activity.

Impact:

  • The VI ratio emerges as a promising, non-invasive indicator of cardiac pump function, potentially aiding in the assessment of heart disease severity.
  • Findings highlight the differential impact of atrial fibrillation and sinus rhythm on VFV patterns and their correlation with CI.
  • The study suggests that the VI ratio could be a valuable addition to echocardiographic assessments for evaluating cardiac performance and predicting outcomes in heart failure.