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Related Concept Videos

Specialized Characteristics of Cardiac Muscles01:27

Specialized Characteristics of Cardiac Muscles

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The primary role of cardiac muscles is to propel blood throughout the cardiovascular system. The cardiac muscle cells, or cardiomyocytes, exhibit specialized characteristics that allow them to perform this function.
Cardiac muscle cells are smaller than skeletal muscles, averaging 10–20 mm in diameter and 50–100 mm in length. However, they have large energy demands for continuous contraction and relaxation. This energy is almost exclusively derived from aerobic metabolism of energy...
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Mechanism of Cardiac Arrhythmias01:28

Mechanism of Cardiac Arrhythmias

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Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.
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Imbalances in Cardiac Output01:26

Imbalances in Cardiac Output

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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...
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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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Imaging Studies for Cardiovascular System III: X-Ray01:20

Imaging Studies for Cardiovascular System III: X-Ray

188
The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
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Structure of Cardiac Muscles01:13

Structure of Cardiac Muscles

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Cardiac muscle, or myocardium, is a specialized type of muscle found exclusively in the heart. Its unique structural and functional characteristics enable the heart to perform its vital role of pumping blood throughout the body continuously and rhythmically. The cardiac muscle cells, or cardiomyocytes, possess an endomysium and perimysium but do not have an epimysium.
Compared to skeletal muscles, cardiac muscle cells are small and mostly have a single nucleus. Additionally, they are usually...
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Assessment of Sarcoplasmic Reticulum Calcium Reserve and Intracellular Diastolic Calcium Removal in Isolated Ventricular Cardiomyocytes
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Cardiac Sarcoidosis.

Manuel L Ribeiro Neto1, Christine L Jellis2, Paul C Cremer2

  • 1Department of Pulmonary Medicine, Cleveland Clinic, 9500 Euclid Avenue / A90, Cleveland, OH 44195, USA.

Clinics in Chest Medicine
|January 20, 2024
PubMed
Summary
This summary is machine-generated.

Cardiac sarcoidosis significantly impacts patient health, necessitating advanced imaging for diagnosis. Differentiating silent from active disease and considering all treatment options are vital for managing this condition.

Keywords:
Cardiac sarcoidosisCardiomyopathiesHeartSarcoidosis

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Generation of Murine Cardiac Pacemaker Cell Aggregates Based on ES-Cell-Programming in Combination with Myh6-Promoter-Selection
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Isolation and Characterization of Cardiac Mesenchymal Stromal Cells from Endomyocardial Bioptic Samples of Arrhythmogenic Cardiomyopathy Patients
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Area of Science:

  • Cardiology
  • Immunology
  • Pulmonology

Background:

  • Cardiac involvement is a primary driver of morbidity and mortality in sarcoidosis patients.
  • Distinguishing between clinically apparent and silent cardiac sarcoidosis is critical for patient management.
  • Sarcoidosis is a multisystem inflammatory disease that can affect the heart.

Purpose of the Study:

  • To highlight the importance of advanced cardiac imaging in diagnosing cardiac sarcoidosis.
  • To emphasize the need to exclude alternative diagnoses in suspected isolated cardiac sarcoidosis.
  • To provide an overview of the therapeutic strategies for cardiac sarcoidosis.

Main Methods:

  • Review of current literature on cardiac sarcoidosis diagnosis and management.
  • Analysis of the role of advanced cardiac imaging techniques (e.g., MRI, PET).
  • Discussion of differential diagnoses for cardiac dysfunction in sarcoidosis.

Main Results:

  • Advanced cardiac imaging is essential for accurate diagnosis and staging of cardiac sarcoidosis.
  • Exclusion of other cardiac conditions is a key step in diagnosing isolated cardiac sarcoidosis.
  • Therapeutic approaches are multifaceted, including immunosuppression, medical therapy, device implantation, and transplantation.

Conclusions:

  • Early and accurate diagnosis of cardiac sarcoidosis using advanced imaging improves patient outcomes.
  • A comprehensive approach is required to manage cardiac sarcoidosis, addressing both the inflammatory process and its cardiac manifestations.
  • Multidisciplinary care is essential for optimizing treatment strategies and improving survival in patients with cardiac sarcoidosis.