What is cardiomyopathy PPT?
What is cardiomyopathy PPT?
Cardiomyopathy, or heart muscle disease, is a type of progressive heart disease in which the heart is abnormally enlarged, thickened, and/or stiffened. As a result, the heart muscle’s ability to pump blood is less efficient, often causing heart failure and the backup of blood into the lungs or rest of the body.
What are the characteristics of dilated cardiomyopathy?
Dilated cardiomyopathy is characterized by ventricular chamber enlargement and systolic dysfunction with greater left ventricular (LV) cavity size with little or no wall hypertrophy. Hypertrophy can be judged as the ratio of LV mass to cavity size; this ratio is decreased in persons with dilated cardiomyopathies.
What is the mechanism of dilated cardiomyopathy?
The hallmark pathophysiologic feature of DCM is systolic dysfunction of the left or both ventricles. Reduced sarcomere contractility increases ventricular volumes to maintain cardiac output through the Frank-Starling mechanism, producing the thin-walled dilated LV appearance that is observed in overt DCM.
What are the types of cardiomyopathy?
The main types of cardiomyopathy are:
- Dilated cardiomyopathy.
- Hypertrophic cardiomyopathy.
- Restrictive cardiomyopathy.
- Arrhythmogenic right ventricular dysplasia.
- Transthyretin amyloid cardiomyopathy (ATTR-CM)
What is the most common cause of dilated cardiomyopathy?
The most common causes of dilated cardiomyopathy are: Heart disease caused by a narrowing or blockage in the coronary arteries. Poorly controlled high blood pressure.
What is the difference between cardiomyopathy and dilated cardiomyopathy?
Summary. Cardiomyopathies are diseases of the myocardium associated with cardiac dysfunction, often resulting in the clinical syndrome of heart failure. Dilated cardiomyopathy is defined as an ejection fraction of lower than 40% in the presence of increased left ventricular dimensions.