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Related Concept Videos

Disorders of the Autonomic Nervous System01:18

Disorders of the Autonomic Nervous System

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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...
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Heart Failure I: Introduction01:27

Heart Failure I: Introduction

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Heart failure refers to a clinical syndrome caused by structural or functional cardiac disorders that prevent the heart from pumping an adequate amount of blood to meet the body's metabolic needs. This condition often arises from myocardial infarction or ischemia, leading to decreased cardiac output, reduced tissue perfusion, impaired gas exchange, fluid volume imbalance, and decreased functional ability.Heart failure can result from disruptions in the mechanisms that regulate cardiac output...
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Cardiac Output II: Effect of Stroke Volume on Cardiac Output01:22

Cardiac Output II: Effect of Stroke Volume on Cardiac Output

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Cardiac output (CO), the amount of blood the heart pumps per minute, is a parameter in cardiovascular physiology determined by stroke volume and heart rate. Stroke volume, the amount of blood pushed from one of the ventricles per heartbeat, is influenced by preload, afterload, and contractility.
Preload
Preload refers to the initial elongation of the cardiac myocytes before contraction and is related to the volume of blood filling the heart at the end of diastole, or end-diastolic volume. The...
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Regulation of Stroke Volume01:27

Regulation of Stroke Volume

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The regulation of stroke volume, which is the amount of blood the heart pumps out during each heartbeat, is critical for maintaining a healthy circulatory system. Stroke volume is influenced by three main factors: preload, contractility, and afterload.
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...
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Pathophysiology of Cardiac Performance01:29

Pathophysiology of Cardiac Performance

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Typical heart performance is influenced by heart rate, rhythm, myocardial contraction, and metabolism or blood flow. The cardiac muscle exhibits distinct electrophysiological features, including pacemaker activity and calcium channel control, which play a vital role in the heart's response to various drugs. The autonomic nervous system, comprising the sympathetic and parasympathetic branches, regulates heart rate. Sympathetic activation increases heart rate, while parasympathetic activation...
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Cardiomyopathy II: Dilated Cardiomyopathy01:30

Cardiomyopathy II: Dilated Cardiomyopathy

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Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
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Post-Stroke Parakinesia Brachialis Oscitans: Clinical Insights from a Case Series.

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Related Experiment Video

Updated: Nov 14, 2025

Development of an Algorithm to Perform a Comprehensive Study of Autonomic Dysreflexia in Animals with High Spinal Cord Injury Using a Telemetry Device
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Cardiovascular autonomic dysfunction after stroke.

Amado Jimenez-Ruiz1, Juan M Racosta2, Kurt Kimpinski3

  • 1Heart & Brain Laboratory, Western University, London, ON, Canada.

Neurological Sciences : Official Journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology
|March 9, 2021
PubMed
Summary

Strokes disrupt the brain

Keywords:
Atrial fibrillationAutonomic dysfunctionCardiovascular complicationsHeart failureParasympatheticStrokeSympathetic

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A Middle Cerebral Artery Occlusion Technique for Inducing Post-stroke Depression in Rats
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Autonomic Function Following Concussion in Youth Athletes: An Exploration of Heart Rate Variability Using 24-hour Recording Methodology
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Related Experiment Videos

Last Updated: Nov 14, 2025

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A Middle Cerebral Artery Occlusion Technique for Inducing Post-stroke Depression in Rats
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Autonomic Function Following Concussion in Youth Athletes: An Exploration of Heart Rate Variability Using 24-hour Recording Methodology
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Area of Science:

  • Neuroscience
  • Cardiology
  • Autonomic Nervous System Research

Background:

  • Strokes impair the brain's control over heart function.
  • Cardiovascular autonomic regulation post-stroke is complex and actively researched.

Purpose of the Study:

  • To provide a comprehensive review of cardiovascular autonomic regulation after stroke.
  • To synthesize current knowledge on stroke-related autonomic dysfunction.

Main Methods:

  • Literature review of recent research on post-stroke autonomic dysfunction.
  • Analysis of anatomical and functional aspects of cardiovascular autonomic control.

Main Results:

  • Detailed overview of the pathophysiology, incidence, and time course of post-stroke autonomic dysfunction.
  • Summary of diagnostic methods, clinical features, and prognostic factors.

Conclusions:

  • Significant advancements have been made in understanding post-stroke autonomic dysfunction.
  • Further research is needed to fully elucidate and manage these cardiovascular complications.