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Heart Failure Drugs: Inotropic Agents01:26

Heart Failure Drugs: Inotropic Agents

Positive inotropic agents are commonly used as the first line of treatment for heart failure. One such agent is digoxin, derived from the genus Digitalis, which has been known for centuries but effectively utilized since 1785. However, these cardiac glycosides can have potentially toxic effects due to their mechanism of action, which involves inhibiting Na+/K+-ATPase and increasing contractility. Digoxin is absorbed orally and distributed in various tissues, including the CNS. It has a long...
Cardiomyopathy I: Introduction and Classification01:25

Cardiomyopathy I: Introduction and Classification

Cardiomyopathy, or CMP, is a group of diseases affecting the myocardial structure, impairing its ability to pump blood effectively. This condition can lead to arrhythmias, heart failure, or sudden cardiac death.Cardiomyopathies are classified into primary and secondary categories:Primary Cardiomyopathy refers to conditions involving only the heart muscle that are often idiopathic (of unknown cause) or genetic. They primarily affect the myocardium without the involvement of other systemic...
Cardiomyopathy II: Dilated Cardiomyopathy01:30

Cardiomyopathy II: Dilated Cardiomyopathy

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,...
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...
Cardiomyopathy IV: Restrictive Cardiomyopathy01:29

Cardiomyopathy IV: Restrictive Cardiomyopathy

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...
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...

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Related Experiment Video

Updated: May 10, 2026

Chemotherapy-induced Vascular Toxicity - Real-time In vivo Imaging of Vessel Impairment
04:48

Chemotherapy-induced Vascular Toxicity - Real-time In vivo Imaging of Vessel Impairment

Published on: January 7, 2015

Anthracycline-induced cardiotoxicity

K Shan1, A M Lincoff, J B Young

  • 1Cleveland Clinic Foundation, Ohio, USA.

Annals of Internal Medicine
|July 1, 1996
PubMed
Summary
This summary is machine-generated.

Anthracycline chemotherapy can cause lasting heart damage, leading to cardiomyopathy and dysfunction. Early detection methods are suboptimal, but dexrazoxane offers some protection, improving survival for cancer survivors.

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Area of Science:

  • Cardiology
  • Oncology
  • Pharmacology

Background:

  • Anthracyclines are vital chemotherapy agents.
  • Anthracycline-induced cardiotoxicity (AIC) poses a significant threat to cancer patients and survivors.
  • AIC can manifest as early cardiomyopathy or late-onset ventricular dysfunction.

Purpose of the Study:

  • To comprehensively review the clinical significance, pathogenesis, detection, and prevention of AIC.
  • To synthesize current understanding of AIC for improved patient outcomes.

Main Methods:

  • Systematic literature review of MEDLINE and cardiology meeting abstracts.
  • Inclusion of 137 original studies and 9 other articles on AIC.
  • Independent assessment of data quality and validity by authors.

Main Results:

  • AIC limits chemotherapy efficacy and causes permanent myocardial damage.
  • Suboptimal detection of subclinical AIC using standard methods like LVEF.
  • Potential pathogenetic mechanisms include free radicals, calcium overload, and cytokines.
  • Dexrazoxane is the sole approved cardioprotectant for select anthracycline regimens.

Conclusions:

  • A growing population of cancer survivors face significant morbidity and mortality from AIC.
  • Effective cardioprotection against AIC is crucial for improving long-term survival in these patients.