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Related Concept Videos

Disorders of the Autonomic Nervous System01:18

Disorders of the Autonomic Nervous System

The autonomic nervous system (ANS) is an intricate network of nerves that controls functions such as the regulation of heart rate, digestion, and blood pressure regulation. When this system malfunctions, it can lead to various disorders that affect multiple bodily functions. One common feature of many autonomic disorders is the involvement of smooth blood vessels, which play a crucial role in regulating blood flow throughout the body.
Raynaud's disease, also known as Raynaud's phenomenon, is a...
Autonomic Nervous System01:22

Autonomic Nervous System

The autonomic nervous system (ANS) is a critical component of the peripheral nervous system, primarily responsible for regulating involuntary bodily functions and maintaining homeostasis. It functions in tandem with the central nervous system (CNS) to seamlessly coordinate various physiological processes without the need for conscious control.
The ANS comprises two main divisions: the sympathetic and parasympathetic divisions. These divisions function antagonistically to maintain a dynamic...
Autonomic Nervous System: Overview01:26

Autonomic Nervous System: Overview

The human nervous system is divided into two main parts: the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS is composed of the brain and spinal cord, while the PNS contains nerve cells, clusters of nerve cells, and the sensory receptors that are outside the CNS. The PNS has two types of nerve cells: sensory (afferent) and motor (efferent). Sensory cells send signals to the CNS from receptors, and motor cells carry signals from the CNS to organs, muscles, and...
Heart Failure III: Clinical Manifestations01:26

Heart Failure III: Clinical Manifestations

Heart failure (HF) manifests primarily as dyspnea, fatigue, and fluid retention, resulting in peripheral and pulmonary edema. Symptoms may vary depending on which ventricle is more affected, left or right.Left-Sided Heart FailureAlso known as left ventricular failure, this condition results from the left ventricle's inability to fill or eject sufficient blood into the systemic circulation. It leads to pulmonary congestion, which occurs when the left ventricle fails to eject blood effectively...
Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...

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Related Experiment Video

Updated: May 19, 2026

Quantitative Autonomic Testing
11:40

Quantitative Autonomic Testing

Published on: July 19, 2011

[Central autonomic failures].

Jean-Michel Senard1, Fabien Despas, Atul Pathak

  • 1Université de Toulouse, CHU de Toulouse, service de pharmacologie clinique, Inserm U1048, 31000 Toulouse, France. jean-michel.senard@univ-tlse3.fr

Presse Medicale (Paris, France : 1983)
|August 18, 2012
PubMed
Summary
This summary is machine-generated.

Orthostatic hypotension, a drop in blood pressure upon standing, is common in central nervous system diseases. This can stem from issues with the peripheral autonomic nervous system (ANS) fibers.

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Area of Science:

  • Neuroscience
  • Autonomic Nervous System Research
  • Clinical Neurology

Context:

  • The autonomic nervous system (ANS) regulates vital organ functions via parasympathetic and sympathetic pathways.
  • Orthostatic hypotension (OH) is a prevalent clinical manifestation in various central nervous system (CNS) disorders.
  • CNS diseases associated with OH include cortical (e.g., stroke, epilepsy), neurodegenerative (e.g., Parkinson's disease, multiple system atrophy), and spinal cord conditions.

Purpose:

  • To elucidate the mechanisms underlying orthostatic hypotension in patients with central nervous system diseases.
  • To investigate the role of peripheral autonomic nervous system (ANS) dysfunction in the pathogenesis of OH within CNS disease contexts.

Summary:

  • Orthostatic hypotension (OH) frequently complicates the clinical course of central nervous system (CNS) diseases.
  • The underlying pathophysiology of OH in these conditions can involve impaired function of the peripheral autonomic nervous system (ANS).
  • Specifically, dysfunction in peripheral ANS fibers has been identified as a contributing factor to OH in certain CNS disease populations.

Impact:

  • Highlights the critical role of the autonomic nervous system in maintaining cardiovascular stability in neurological disorders.
  • Suggests potential therapeutic targets for managing orthostatic hypotension in patients with CNS diseases.
  • Enhances understanding of the complex interplay between central and peripheral nervous systems in cardiovascular regulation.