Cardiomyopathy Essay

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Dilated cardiomyopathy (DCM) refers to a condition in which the heart becomes enlarged and weakened and is thus unable to pump blood sufficiently to the rest of the body. The left ventricle is usually more affected than the right one (American Stroke Association [ASA], 2011). There are various types of cardiomyopathy, but DCM is the most prevalent as it is thought to occur in at least one out of every 2,500 persons. It is potentially even more common as better understanding of the disease means more people are being correctly diagnosed (Ku, Feiger, Taylor, & Mestroni, 2003). DCM also accounts for about 55-60% of all cases of cardiomyopathies among children. Approximately one child out of every 160,000 is diagnosed with DCM in the United States each year (ASA, 2011).
Dilated cardiomyopathy is caused by a variety of factors, including genetic. As more studies are done with familial genes and family history, it is believed that risk of DCM can be inherited. In one study, nearly 30% of persons diagnosed with this type of cardiomyopathy have a close relative with the condition who may not show any symptoms or have yet to be correctly diagnosed (Baig et al., 1998). It is estimated that 30-50% of persons with DCM of an unknown cause (idiopathic) have one or more family members with similar heart dysfunction. This implies that heredity is a risk factor in the development of the disease (Ku et al., 2003).
DCM is also caused by a number of other factors, the most common of which is heart disease resulting from narrowing of arteries and insufficiently controlled hypertension (Chen, 2012). Chen (2012) lists other risks for DCM, such as those who consume alcohol in excess or abuse cocaine as these behaviors can be toxic to the heart. Abnormal ...

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...rdiogram. Chest X-rays taken will show the size of the heart at that moment in time, while subsequent X-rays can reveal any changes in heart size that may occur as the disease progresses (ASA, 2011). An electrocardiogram (EKG) is used to record the electrical activity in the heart and can provide evidence of thickened or enlarged chambers, as well as any arrhythmias that may be occurring (ASA, 2011).
Other diagnostics that can detect abnormal heart structure and impaired function include magnetic resonance imaging (MRI), computed tomography (CT) scan, coronary angiogram, and even cardiac stress tests (Chen, 2012). In addition, laboratory tests can assist in a DCM diagnosis. These include antinuclear antibody (ANA) and erythrocyte sedimentation rate (ESR) tests to identify any autoimmune disorders, as well as antibody tests to detect possible infections (Chen, 2012).

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