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Related Concept Videos

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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ECG Interpretation of Arrhythmias I: Sinus Arrhythmias01:16

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Arrhythmias are disturbances in the heart's rhythm that lead to abnormal heartbeats. These irregularities can originate from different parts of the heart and are classified based on their origin and nature.
Types of Arrhythmias
Sinus Node Arrhythmias
Sinus Bradycardia: Originating from the sinoatrial (SA) node, sinus bradycardia involves slower impulses, resulting in a heart rate of less than 60 beats per minute (bpm). Causes include sleep, vagal stimulation, beta-blockers, hypothyroidism,...
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Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy III: Hypertrophic Cardiomyopathy

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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...
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Cardiomyopathy IV: Restrictive Cardiomyopathy01:29

Cardiomyopathy IV: Restrictive Cardiomyopathy

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Restrictive cardiomyopathy (RCM) is a rare heart muscle disease characterized by impaired ventricular filling due to stiffened ventricular walls, leading to significant diastolic dysfunction.EtiologyRestrictive cardiomyopathy can arise from both inherited and acquired diseases, many of which are systemic. It is categorized into four main types: infiltrative, storage, non-infiltrative, and endomyocardial diseases.Infiltrative diseases, such as amyloidosis, lead to RCM by depositing amyloid...
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ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias

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Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...
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Mechanism of Cardiac Arrhythmias01:28

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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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Related Experiment Video

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A Doxorubicin-Induced Murine Model of Dilated Cardiomyopathy In Vivo
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Arrhythmia induced cardiomyopathy.

Hariharan Sugumar1,2,3,4, Sandeep Prabhu1,2,3,4, Aleksandr Voskoboinik1,2,3,4

  • 1The Baker Heart & Diabetes Institute Melbourne Vic. Australia.

Journal of Arrhythmia
|September 1, 2018
PubMed
Summary
This summary is machine-generated.

Arrhythmia induced cardiomyopathies (AIC) are heart conditions caused by irregular heart rhythms. This overview focuses on atrial fibrillation-mediated cardiomyopathy, offering insights into recognition, screening, and management strategies.

Keywords:
arrhythmiaatrial fibrillationcardiomyopathyreversibletachycardia

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Area of Science:

  • Cardiology
  • Electrophysiology
  • Heart Failure Research

Background:

  • Arrhythmia induced cardiomyopathies (AIC) encompass conditions like tachycardia and ectopy-induced cardiomyopathy.
  • Atrial fibrillation (AF) and heart failure (HF) are prevalent, often co-occurring, and mutually worsening conditions.
  • AF-mediated cardiomyopathy is a significant clinical challenge within AIC.

Purpose of the Study:

  • To provide a comprehensive overview of AIC.
  • To review current evidence for the treatment and management of AIC.
  • To focus on AF-mediated cardiomyopathy and propose strategies for recognition, screening, and management.

Main Methods:

  • Literature review of current understanding and evidence.
  • Analysis of the interplay between AF and HF.
  • Synthesis of diagnostic and therapeutic approaches for AIC.

Main Results:

  • AIC represents a spectrum of heart muscle dysfunction driven by arrhythmias.
  • AF is a common and critical driver of cardiomyopathy, leading to heart failure.
  • Effective management requires integrated approaches for both arrhythmia and heart failure.

Conclusions:

  • Early recognition and screening are crucial for identifying patients at risk of AIC.
  • Management strategies should target both the underlying arrhythmia and the resulting cardiomyopathy.
  • Further research is needed to optimize treatment protocols for AIC, particularly AF-mediated forms.