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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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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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Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...
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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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Reversible ventricular dysfunction in cyanotic heart disease.

Neeraj Awasthy1, S Radhakrishnan2, K S Iyer3

  • 1Consultant (Pediatric Cardiology), Department of Pediatric and Congenital Heart Diseases, Fortis Escorts Heart Institute, New Delhi, India.

Indian Heart Journal
|January 31, 2015
PubMed
Summary
This summary is machine-generated.

Cyanotic congenital heart disease can cause ventricular dysfunction due to hypoxia. Evaluating for treatable causes like hypoxia is crucial in these patients before cardiac repair.

Keywords:
HypocalcemiaHypoxiaTetralogy of Fallot

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Area of Science:

  • Cardiology
  • Pediatric Cardiology
  • Cardiac Surgery

Background:

  • Ventricular dysfunction is a significant concern for patients undergoing cardiac surgery.
  • Cyanotic congenital heart disease (CCHD) presents unique preoperative challenges.
  • Hypoxia is a potential, yet often overlooked, contributor to ventricular dysfunction in CCHD.

Purpose of the Study:

  • To highlight hypoxia as a reversible cause of ventricular dysfunction in CCHD patients.
  • To emphasize the importance of investigating hypoxia in CCHD with ventricular dysfunction.
  • To guide preoperative evaluation and management strategies for CCHD.

Main Methods:

  • Case report of two patients with CCHD.
  • Clinical evaluation focusing on hypoxia and ventricular function.
  • Preoperative assessment for treatable causes of dysfunction.

Main Results:

  • Identified hypoxia as the cause of ventricular dysfunction in two CCHD cases.
  • Demonstrated improvement in ventricular function after addressing hypoxia.
  • Highlighted the need for thorough etiological investigation beyond structural abnormalities.

Conclusions:

  • Hypoxia should be considered and evaluated as a cause of ventricular dysfunction in CCHD patients.
  • Early identification and management of hypoxia can improve preoperative cardiac patient outcomes.
  • This underscores the importance of a comprehensive approach to ventricular dysfunction in CCHD.