Dilated cardiomyopathy dcm is the commonest cardiac muscle disease. Cardiomyopathies are diseases of the myocardium associated with cardiac dysfunction, often resulting in the clinical syndrome of heart failure. Diagnostic criteria for peripartum cardiomyopathy diagnostic criteria for peripartum cardiomyopathy are. Dilated cardiomyopathy dcm is a primary disease of the cardiac muscle and can be defined as left or right ventricular dilatation and failure in the absence of coronary artery disease, hypertension, valve disease, or congenital heart abnormality. This means that its unable to pump blood around your body efficiently. Dilated cardiomyopathy dcm is a myocardial disease characterised by ventricular dilatation and global myocardial dysfunction ejection fraction dilated cardiomyopathy dcm dilated cardiomyopathy dcm is defined as dilation of one or both ventricles. Dilated cardiomyopathy is a condition in which the heart muscle becomes weakened and enlarged. Dilated cardiomyopathy dcm is a disease of the heart muscle. In clinical practice, ischemic cardiomyopathy is frequently viewed as a type of dilated cardiomyopathy, although current major society classification systems exclude it 1,2. Dilated cardiomyopathy is myocardial dysfunction causing heart failure in which ventricular dilation and systolic dysfunction predominate. This will result in low cardiac output symptoms and transmission of the increased leftsided cardiac pressures into the lungs. Dilated cardiomyopathy is a primary heart disease characterized by progressive dilatation and ventricular dysfunction.
Dilated cardiomyopathy dcm characterised by ventricular dilatation. Dilated cardiomyopathy dcm is a disease of your heart muscle where it becomes stretched and thin. Dilated cardiomyopathy arising as primary myocardial disease of unknown etiology or as disorders of toxic, familial, or infective origin. Dilated cardiomyopathy dcm is a rare but recognised cause of sudden cardiac death in athletes. Left bundle branch block lbbb statpearls ncbi bookshelf. In addition, serial ecg and echocardiographic changes in dcm during a mean followup period of 1. All that we require is, documentation of lv dilatation and contractile dysfunction. It should be noted that several types of cardiomyopathies e. Causes, signs and symptoms, pathogenesis, diagnosis, and treatment duration. Dilated cardiomyopathy dcm is a disease of the heart muscle which primarily affects the hearts main pumping chamber, the left ventricle.
A 69yearold man with a history of a dilated cardiomyopathy presents with several hours of palpitations and sudden onset of shortness of breath. Cardiomyopathy cardiology explained ncbi bookshelf. Ecg characteristics of dilated cardiomyopathy sciencedirect. Dilated cardiomyopathy dcm litfl ecg library diagnosis. Dilated and restrictive cardiomyopathies online medical reference covers diseases of the myocardium associated with cardiac dysfunction. This book is distributed under the terms of the creative commons attribution 4. Restrictive cardiomyopathy manifests as congestive heart failure. Its epidemiology has long been ignored due to lack of universal diagnostic criteria and studies on small samples, often limited to specific geographical areas. However, if patients manage their symptoms properly based on the necessary precautions and regular checkups as well as recommendations from doctors, they can increase to up to 10 years period.
Authored by corinne bottsilverman of the cleveland clinic. Determining the etiology of dilated cardiomyopathy is a key element in the management and prognosis of a patient with heart failure hf. Dilated cardiomyopathy dcm is characterized by a poorly contracting dilated left ventricle with a normal or reduced left ventricular wall thickness epidemiology dcm is the most common cause of congestive cardiac failure ccf, with an estimated prevalence of at least 36. Differentiation between these entities is an important focus. Dilated cardiomyopathy dcm is an important cause of sudden cardiac death scd and heart failure hf and is the leading indication for cardiac transplantation in children and adults worldwide.
Dilated cardiomyopathy from genetics to clinical management. If you have dcm, there is a 50 per cent chance that your child will inherit the condition. Dilated cardiomyopathy dcm is a myocardial disease characterised by ventricular dilatation and global myocardial dysfunction ejection fraction cardiomyopathy. The most common causes of dilated cardiomyopathy are. Dilated cardiomyopathy cardiovascular disorders merck. Dilated cardiomyopathy dcm is defined as dilation of one or both ventricles. It is the most common type of cardiomyopathy and typically affects those aged 20 to 60. Dilation of the left ventricle is virtually always accompanied by impaired left ventricular systolic function. To elucidate the electrocardiographic ecg characteristics of dilated cardiomyopathy dcm, the authors analyzed the 12lead ecgs and echocardiograms in 45 patients with dcm, 54 patients with left ventricular lv dilatation secondary to valvular heart disease vhd, 101 hypertensive patients with lv hypertrophy, and 63 normal control subjects.
Often, there are ventricular and supraventricular arrhythmias, conduction system abnormalities, and thromboembolism. Differentiation between athletes heart and dilated. Dilated cardiomyopathy is a progressive, usually irreversible, disease causing global systolic contractile dysfunction with heart failure. The left ventricle of affected individuals becomes enlarged dilated and cannot pump blood to the body with as much force as a. As a result, the heart cannot pump enough blood to the rest of the body. Dilated and restrictive cardiomyopathies cleveland clinic. This open access book presents a multidisciplinary comprehensive overview of dilated. In one series, 5% of over 1,000 consecutively examined athletes had structural abnormalities such as hcm or dilated cardiomyopathy dcm. This book is distributed under the terms of the creative commons. Ecg reference sites and books the best of the rest. Inherited dcm is caused by a change or mutation in one or more genes.
Electrocardiogram ekg may show nonspecific st segment and t wave abnormalities. Epidemiology dilated cardiomyopathy ncbi bookshelf. Development of heart failure in the last month of pregnancy or within 5 months after delivery left ventricular systolic dysfunction with ejection fraction less than 45% no other identifiable cause for heart failure no recognized heart disease before the last. The aim of this study was to correlate the ecg findings with the endoepicardial voltage maps performed for the purpose. Advanced stages of dcm may present with the following ecg changes. Myocardial siderosis was present in 618 33% of patients with presenting ferritin.
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