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

Time-constant adaptations in heart failure.

R Zelis1, L I Sinoway, U Leuenberger

  • 1Division of Cardiology, Milton S. Hershey Medical Centre, Pennsylvania State University, College of Medicine, Hershey 17033.

European Heart Journal
|August 1, 1991
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

Characterizing mud volcanic activity through terrestrial gamma radiation: Insights into subsurface processes at the Piparo Mud Volcano, Trinidad and Tobago.

Journal of environmental radioactivity·2026
Same author

Black Hole Spectroscopy and Tests of General Relativity with GW250114.

Physical review letters·2026
Same author

Clinical clusters during acute illness predict long-term mortality in older patients.

BMC medicine·2025
Same author

GW250114: Testing Hawking's Area Law and the Kerr Nature of Black Holes.

Physical review letters·2025
Same author

Improving cosmological reach of a gravitational wave observatory using Deep Loop Shaping.

Science (New York, N.Y.)·2025
Same author

Estimated long-term dietary exposure to cadmium from consumption of spinach in the United States: A probabilistic assessment.

Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association·2025
Same journal

The surgical collateralization theory: has the beautiful hypothesis been killed by the ugly facts?

European heart journal·2026
Same journal

Beyond single measurement: additional considerations for high-sensitivity C-reactive protein in cardiovascular risk prediction.

European heart journal·2026
Same journal

Brain mineralocorticoid receptor activation and antagonism in heart failure with preserved ejection fraction: a hypothesis.

European heart journal·2026
Same journal

Myths and misconceptions about high-sensitivity C-reactive protein as a marker of residual inflammatory risk.

European heart journal·2026
Same journal

Vascular Ehlers-Danlos syndrome: should we treat asymptomatic patients?

European heart journal·2026
Same journal

Impactful trials on dyslipidaemias, fractional flow reserve, beta-blockers, and peripheral artery disease.

European heart journal·2026
See all related articles

Circulatory compensatory mechanisms for stress are less effective in chronic conditions like congestive heart failure (CHF). Slow-developing changes in blood vessels and muscles improve gradually with successful CHF therapy, explaining delayed exercise tolerance recovery.

Area of Science:

  • Cardiology
  • Physiology
  • Pathophysiology

Background:

  • Circulatory compensatory mechanisms are crucial for managing physiological stress.
  • These mechanisms, including the sympathetic nervous system and Frank-Starling mechanism, are less effective under chronic pathological stress like congestive heart failure (CHF).
  • Longer-term mechanisms, such as renin-angiotensin-aldosterone system activation and myocardial changes, become involved in CHF.

Purpose of the Study:

  • To explore the time-dependent nature of compensatory mechanisms in congestive heart failure (CHF).
  • To understand the relationship between the activation and reversal time constants of these mechanisms and clinical outcomes.
  • To explain the delayed improvement in exercise tolerance compared to hemodynamic changes in CHF patients.

Main Methods:

Keywords:
Non-programmatic

Related Experiment Videos

  • The study reviews existing literature on circulatory compensatory mechanisms in physiological and pathological stress.
  • It analyzes the time constants (short vs. long) for activation and reversal of various compensatory pathways.
  • The focus is on understanding how these time constants influence the recovery of hemodynamics and exercise tolerance in CHF.

Main Results:

  • Short-term compensatory mechanisms are less effective in chronic conditions like CHF.
  • Slowly developing changes in blood vessels and skeletal muscle metabolism occur due to inadequate oxygen delivery.
  • Successful CHF therapy leads to gradual improvement in these slow-developing abnormalities.

Conclusions:

  • Compensatory mechanisms in CHF have distinct short and long time constants for activation and reversal.
  • The slow reversal of vascular and skeletal muscle adaptations contributes to delayed improvements in exercise tolerance.
  • Understanding these time constants is key to explaining the differential recovery rates of hemodynamics and exercise capacity in CHF.