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

How does the sympathetic nervous system behave during non pulsatile circulation?

K Toda1, E Tatsumi, Y Taenaka

  • 1Department of Artificial Organs National Cardiovascular Center Research Institute, Osaka, Japan.

ASAIO Journal (American Society for Artificial Internal Organs : 1992)
|July 1, 1995
PubMed
Summary

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

Formation and evolution of carbonaceous asteroid Ryugu: Direct evidence from returned samples.

Science (New York, N.Y.)·2022
Same author

Pebbles and sand on asteroid (162173) Ryugu: In situ observation and particles returned to Earth.

Science (New York, N.Y.)·2022
Same author

Variations in color and reflectance on the surface of asteroid (101955) Bennu.

Science (New York, N.Y.)·2020
Same author

Sample collection from asteroid (162173) Ryugu by Hayabusa2: Implications for surface evolution.

Science (New York, N.Y.)·2020
Same author

An artificial impact on the asteroid (162173) Ryugu formed a crater in the gravity-dominated regime.

Science (New York, N.Y.)·2020
Same author

Journal of Artificial Organs 2019: the year in review : Journal of Artificial Organs Editorial Committee.

Journal of artificial organs : the official journal of the Japanese Society for Artificial Organs·2020

Non-pulsatile circulation significantly increases renal sympathetic nerve activity (RSNA) in goats. Removing pulsation disrupts circulatory control, suggesting effects on vascular tone.

Area of Science:

  • Cardiovascular Physiology
  • Autonomic Nervous System Research
  • Medical Device Engineering

Background:

  • Non-pulsatile circulation is used in cardiopulmonary bypass and circulatory assist devices.
  • The impact of non-pulsatile flow on sympathetic nerve activity, crucial for circulatory control, remains unclear.

Purpose of the Study:

  • To investigate the effects of non-pulsatile circulation on renal sympathetic nerve activity (RSNA).
  • To compare RSNA during pulsatile versus non-pulsatile circulatory modes in an animal model.

Main Methods:

  • Renal sympathetic nerve activity (RSNA) was recorded in goats under total left heart bypass.
  • Pulsatile and non-pulsatile pumps were used, allowing instant mode conversion while maintaining mean aortic pressure.
  • RSNA was quantified by integrating original signals and averaging over 30-second intervals.

Related Experiment Videos

Main Results:

  • The pulse-synchronous bursts of RSNA observed during pulsatile circulation disappeared with non-pulsatile flow.
  • Mean RSNA significantly increased by 120% during non-pulsatile circulation compared to pulsatile.
  • Reverting to pulsatile circulation decreased mean RSNA to 79% of the non-pulsatile level.

Conclusions:

  • Non-pulsatile circulation significantly elevates renal sympathetic nerve activity.
  • The loss of pulsation may affect both the periodicity and magnitude of vascular tone.
  • Findings suggest potential implications for circulatory assist device design and function.