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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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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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Coronary Artery Disease III: Clinical Manifestations01:30

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Coronary Artery Disease (CAD) is a primary health risk worldwide, leading to significant morbidity and mortality. The condition arises from the buildup of atherosclerotic plaques within the coronary arteries, resulting in diminished blood supply to the heart muscle.The clinical manifestations of CAD vary widely, from asymptomatic stages to severe, life-threatening conditions. Understanding these manifestations is crucial for early diagnosis and effective management.Angina Pectoris: The Warning...
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Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

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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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The pathophysiology of Acute Coronary Syndrome [ACD] involves several key processes:The main underlying cause of ACD is atherosclerosis, a chronic inflammatory disease characterized by the buildup of lipid-laden plaques within the coronary arteries.As the atherosclerotic plaque grows in the coronary artery, it may become unstable due to the formation of a lipid-rich core and a thin fibrous cap. Inflammatory cells within the plaque, such as macrophages, secrete enzymes that degrade the...
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A Microscopic 2,3,5-Triphenyltetrazolium Chloride Assay for Accurate and Reliable Analysis of Myocardial Injury
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The fifth takotsubo variant.

Paul G Bridgman1, Christina W Chan1

  • 1Department of Cardiology, Christchurch Hospital, Christchurch, New Zealand.

Echocardiography (Mount Kisco, N.Y.)
|November 3, 2016
PubMed
Summary
This summary is machine-generated.

This study describes a new pattern of takotsubo cardiomyopathy, the reverse mid-ventricular type, affecting heart muscle movement. This condition, characterized by specific cardiac dysfunction, resolved within weeks.

Keywords:
apical ballooning syndromecardiomyopathyechocardiographytakotsubo cardiomyopathy

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Area of Science:

  • Cardiology
  • Cardiovascular Medicine
  • Medical Case Reports

Background:

  • Takotsubo cardiomyopathy (TTC), also known as stress-induced cardiomyopathy, is a transient left ventricular dysfunction.
  • Typical TTC patterns involve apical ballooning, but atypical variants are increasingly recognized.

Observation:

  • A case report details a 79-year-old woman presenting with chest pain, elevated troponin I, and EKG changes.
  • Initial coronary angiography revealed minimal coronary artery disease.
  • The patient exhibited a unique pattern of left ventricular (LV) dysfunction: hyperdynamic mid-LV with apical and basal akinesis/hypokinesis.

Findings:

  • This pattern represents the fifth described variant of takotsubo cardiomyopathy, termed reverse mid-ventricular TTC.
  • Cardiac biomarkers and EKG abnormalities normalized over time.
  • Follow-up echocardiography demonstrated complete recovery of left ventricular function within six weeks.

Implications:

  • Recognition of this fifth TTC pattern is crucial for accurate diagnosis and management.
  • Understanding atypical TTC variants expands the spectrum of cardiac dysfunction related to stress.
  • This case highlights the potential for reversible myocardial dysfunction in stress-induced conditions.