Ischemic cardiomyopathy
| Ischemic Cardiomyopathy | |
|---|---|
| Classification and external resources | |
| Specialty | Cardiology |
| ICD-10 | I25.5 |
Category:Pages with Infobox medical condition using multiple parameters for one
Ischemic cardiomyopathy is a type of cardiomyopathy caused by a narrowing of the coronary arteries which supply blood to the heart. Typically, patients with ischemic cardiomyopathy have a history of acute myocardial infarction, however, it may occur in patients with coronary artery disease, but without a past history of acute myocardial infarction. This cardiomyopathy is one of the leading causes of sudden cardiac death.
Signs and symptoms of ischemic cardiomyopathy include sudden fatigue, shortness of breath, dizziness and palpitations.
Ischemic cardiomyopathy is the cause of more than 60% of all cases of systolic congestive heart failure in most countries of the world. A chest radiography that demonstrates coronary artery calcification is a probable indication of ischemic cardiomyopathy.
The following are causes of ischemic cardiomyopathy:
Ischemic cardiomyopathy is caused by too little oxygen reaching the muscular layer of the heart due to a narrowing of coronary arteries, resulting in decreased blood flow to the heart's muscular layer, in turn causing cell death. This can cause different levels of tissue injury and affect large and intermediate arteries alike.
Ischemic cardiomyopathy can be diagnosed via magnetic resonance imaging (MRI) protocol, imaging both global and regional function. Also the Look-Locker technique is used to identify diffuse fibrosis; it is therefore important to be able to determine the extent of the ischemic scar. Some argue that only left main- or proximal-left anterior descending artery disease is relevant to the diagnostic criteria for ischemic cardiomyopathy. Myocardial imaging usually demonstrates left ventricular dilation, severe ventricular dysfunction, and multiple infarctions. Signs include congestive heart failure, angina edema, weight gain and fainting, among others.
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