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

[Dynamic changes in superior vena caval configuration based on posture].

J Ueki1, T Dambara

  • 1Department of Respiratory Medicine, Juntendo University, School of Medicine, Tokyo, Japan.

Nihon Kyobu Shikkan Gakkai Zasshi
|August 1, 1991
PubMed
Summary

Positional changes significantly affect the superior vena cava (SVC) diameter in humans. The SVC is largest in the right decubitus position and smallest in the left, influenced by thoracic pressure and gravity.

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

VEGF regulates the proliferation of acid-exposed alveolar lining epithelial cells.

Thorax·2003
Same author

Effects of extracellular Na+ and Ca2+ ions and Ca2+ channel modulators on the cell-associated activity of 99mTc-MIBI and 99mTc-tetrofosmin in tumour cells.

Nuclear medicine communications·2003
Same author

Longitudinal follow-up study of 11 patients with pulmonary lymphangioleiomyomatosis: diverse clinical courses of LAM allow some patients to be treated without anti-hormone therapy.

Respirology (Carlton, Vic.)·2002
Same author

[Evaluation of spontaneous pneumothorax in patients with pulmonary lymphangioleiomyomatosis].

Nihon Kokyuki Gakkai zasshi = the journal of the Japanese Respiratory Society·2001
Same author

[A case of chondrosarcoma originating from the rib and presenting as a posterior mediastinal tumor-like shadow].

Nihon Kokyuki Gakkai zasshi = the journal of the Japanese Respiratory Society·2001
Same author

Inspiratory flow reserve in boys with Duchenne muscular dystrophy.

Pediatric pulmonology·2001

Area of Science:

  • Cardiovascular Physiology
  • Thoracic Imaging
  • Vascular Mechanics

Context:

  • Noninvasive assessment of the superior vena cava (SVC) is crucial for understanding thoracic vascular dynamics.
  • Previous studies have not fully elucidated the impact of body positioning on SVC configuration.
  • Endoscopic ultrasonography provides a detailed view of SVC morphology and behavior.

Purpose:

  • To investigate the influence of body position on the configuration and diameter of the superior vena cava (SVC) in humans.
  • To observe SVC dynamics during the cardiac cycle and respiration.
  • To correlate SVC dimensions with positional changes and thoracic influences.

Summary:

  • Endoscopic ultrasonography was used to study 34 subjects, observing SVC movement during cardiac cycles and respiration.

Related Experiment Videos

  • SVC diameter varied with position, being largest in the right decubitus (11.3 mm/m²) and smallest in the left decubitus (8.5 mm/m²) positions.
  • SVC geometry is influenced by thoracic pressure and gravity, behaving like a collapsible pulmonary vascular vessel.

    • Impact:

    • Provides novel insights into the dynamic nature of the SVC and its response to external forces.
    • Establishes positional variations in SVC dimensions, relevant for interpreting imaging studies.
    • Suggests SVC's mechanical behavior is analogous to pulmonary vasculature, impacting clinical interpretations.