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Related Concept Videos

Cardiomyopathy V: Interprofessional Care01:29

Cardiomyopathy V: Interprofessional Care

Managing cardiomyopathy involves addressing underlying or precipitating causes, treating heart failure with medications, and implementing dietary changes and a balanced exercise and rest regimen.Lifestyle ModificationsCardiomyopathy patients should adopt a low-sodium diet to reduce fluid retention and manage heart failure. A personalized exercise and rest plan helps maintain physical fitness without overstraining the heart. Avoiding alcohol and tobacco is essential to prevent further damage to...
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...
Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy III: Hypertrophic Cardiomyopathy

Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
Imbalances in Cardiac Output01:26

Imbalances 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...
Cardiomyopathy VI: Nursing Management01:29

Cardiomyopathy VI: Nursing Management

Assessment: Nursing management of patients with cardiomyopathy begins with a thorough assessment of the patient's history, including a family history of cardiomyopathy or sudden cardiac death, personal history of heart disease, hypertension, diabetes, and any alcohol consumption or drug use.During the physical examination, assess vital signs, look for signs of heart failure (such as edema, jugular venous distention, and cyanosis), auscultate for abnormal heart sounds (like murmurs and gallops),...
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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Overexpression of diacylglycerol kinase zeta inhibits endothelin-1-induced decreases in Ca2+ transients and cell shortening in mouse ventricular myocytes.

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Related Experiment Video

Updated: Jul 4, 2026

Murine Echocardiography of Left Atrium, Aorta, and Pulmonary Artery
08:17

Murine Echocardiography of Left Atrium, Aorta, and Pulmonary Artery

Published on: February 20, 2017

[Aging-associated changes in cardiac function and their prevention].

Kazuhide Nishimaru1

  • 1Bio Labo Inc.

Clinical Calcium
|July 2, 2008
PubMed
Summary
This summary is machine-generated.

Aging hearts experience altered calcium handling, increasing arrhythmia risk. N-3 fatty acids may protect against this by preventing calcium overload in aged cardiac cells.

Related Experiment Videos

Last Updated: Jul 4, 2026

Murine Echocardiography of Left Atrium, Aorta, and Pulmonary Artery
08:17

Murine Echocardiography of Left Atrium, Aorta, and Pulmonary Artery

Published on: February 20, 2017

Area of Science:

  • Cardiovascular physiology
  • Cellular biology
  • Nutritional science

Context:

  • Aging leads to detrimental changes in cardiac function, including impaired calcium (Ca2+) handling and neurohumoral regulation.
  • These age-related cardiac alterations can reduce energy efficiency and increase susceptibility to Ca2+ overload, potentially causing arrhythmia and cell death.

Purpose:

  • To investigate the role of N-3 polyunsaturated fatty acids in preventing age-associated cardiac Ca2+ overload.
  • To explore the relationship between reduced N-3 fatty acid content in aged cardiomyocytes and altered cardiac function.

Summary:

  • Rodent studies reveal aging impairs cardiac contraction and Ca2+ homeostasis.
  • N-3 polyunsaturated fatty acids are known to prevent cardiac Ca2+ overload, but their content decreases in aged cardiomyocytes.
  • This reduction suggests a link between N-3 fatty acid levels and age-related cardiac dysfunction.

Impact:

  • Findings suggest that the balance of N-3 and N-6 fatty acid intake may influence the risk of age-related cardiovascular diseases.
  • Understanding these mechanisms could inform dietary strategies for mitigating cardiac aging.
  • Highlights the potential of N-3 fatty acids in maintaining cardiac health during aging.