Related Experiment Video
Updated: Jul 16, 2026
04:24
Acupoint Application as a Traditional Chinese Medicine Treatment for Fatigue Associated with Chronic Obstructive Pulmonary Disease
Published on: September 5, 2025
Why does chronic heart failure cause breathlessness and fatigue?
Klaus K Witte1, Andrew L Clark
1Academic Cardiology, Leeds General Infirmary, Great George Street, Leeds, UK. klauswitte@hotmail.com
Progress in Cardiovascular Diseases
|March 3, 2007
Summary
Chronic heart failure (CHF) symptoms like fatigue and breathlessness may stem from heart muscle disease and overactive nerve receptors, not just reduced cardiac output. This review explores these systemic effects in CHF patients.
Area of Science:
- Cardiology
- Exercise Physiology
- Symptom Pathophysiology
Background:
- Traditional chronic heart failure (CHF) explanations focus on cardiac output and pulmonary edema impacting exercise capacity and causing fatigue and breathlessness.
- However, left ventricular function indices poorly correlate with patient symptoms, suggesting alternative causes.
- A specific heart failure myopathy and overactive skeletal muscle ergoreceptors are implicated in CHF symptom development.
Purpose of the Study:
- To review the systemic consequences of left ventricular dysfunction in chronic heart failure.
- To elucidate the relationship between these systemic effects and the symptoms of fatigue and breathlessness.
Main Methods:
- Literature review of systemic consequences of left ventricular dysfunction in chronic heart failure.
- Analysis of the role of heart failure myopathy and ergoreceptor overactivity.
- Correlation of these factors with exercise capacity and symptoms.
Main Results:
- Left ventricular dysfunction leads to systemic consequences beyond reduced cardiac output.
- Heart failure myopathy contributes significantly to early fatigue.
- Overactive ergoreceptors, potentially due to myopathy, link to ventilatory responses, breathlessness, and sympathetic overactivity in CHF.
Conclusions:
- Symptoms of chronic heart failure (CHF) may originate from heart failure myopathy and overactive ergoreceptors, not solely from impaired cardiac output or pulmonary edema.
- Understanding these systemic effects is crucial for managing CHF symptoms effectively.
Related Concept Videos
01:26Imbalances in Cardiac Output
The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...
01:26Heart 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...
01:27Heart Failure I: Introduction
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...
01:19Chronic Obstructive Pulmonary Disease IV: Clinical Manifestations
Chronic Obstructive Pulmonary Disease, or COPD, is a long-term condition marked by persistent and only partially reversible airflow limitation. It involves two overlapping conditions—chronic bronchitis and emphysema—which often co-appear but differ in dominant symptoms and underlying mechanisms.Chronic Bronchitis FeaturesChronic bronchitis presents with a persistent productive cough and thick, sometimes purulent mucus due to airway inflammation, enlarged mucus glands, and goblet cell...
01:17Pathophysiology 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...
01:25Chronic Obstructive Pulmonary Disease-III: Symptoms and Complications.
Understanding the variety of primary symptoms and systemic complications that characterize chronic obstructive pulmonary disease (COPD) is crucial for healthcare professionals.
Symptoms of COPD can be classified as primary or systemic. Primary symptoms relate to reduced airflow, while systemic or extrapulmonary symptoms relate to COPD's broader impact on the body.
Primary Symptoms of COPD:
Symptoms of COPD can be classified as primary or systemic. Primary symptoms relate to reduced airflow, while systemic or extrapulmonary symptoms relate to COPD's broader impact on the body.
Primary Symptoms of COPD: