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429.7 Certain sequelae of myocardial infarction not elsewhere classified. 429.71 Certain sequelae of myocardial infarction not elsewhere classified acquired cardiac septal defect; 429.79 Certain sequelae of myocardial infarction not elsewhere classified other; 429.8 Other ill-defined heart diseases. 429.81 Other disorders of papillary muscle
A myocardial infarction (MI), commonly known as a heart attack, occurs when blood flow decreases or stops in one of the coronary arteries of the heart, causing infarction (tissue death) to the heart muscle. [1] The most common symptom is retrosternal chest pain or discomfort that classically radiates to the left shoulder, arm, or jaw. [1]
The most serious risks are death, stroke, ventricular fibrillation (non-sustained ventricular tachycardia is common), myocardial infarction (heart attack, MI), and aortic dissection. A heart attack during or shortly after the procedure occurs in 0.3% of cases; this may require emergency coronary artery bypass surgery . [ 13 ]
However, structural changes in the diseased heart as a result of inherited factors (mutations in ion-channel coding genes, for example) cannot explain the sudden onset of cardiac arrest. [ 60 ] In ventricular tachycardia, the heart also beats faster than normal, which may prevent the heart chambers from properly filling with blood. [ 61 ]
A region on chromosome 17 was confined to families with multiple cases of myocardial infarction. [147] Other genome-wide studies have identified a firm risk variant on chromosome 9 (9p21.3). [148] However, these and other loci are found in intergenic segments and need further research in understanding how the phenotype is affected. [149]
SNOMED started in 1965 as a Systematized Nomenclature of Pathology (SNOP) and was further developed into a logic-based health care terminology. [6] [7]SNOMED CT was created in 1999 by the merger, expansion and restructuring of two large-scale terminologies: SNOMED Reference Terminology (SNOMED RT), developed by the College of American Pathologists (CAP); and the Clinical Terms Version 3 (CTV3 ...
Ischemic cardiomyopathy is a type of cardiomyopathy caused by a narrowing of the coronary arteries which supply blood to the heart. [4] Typically, patients with ischemic cardiomyopathy have a history of acute myocardial infarction, [5] however, it may occur in patients with coronary artery disease, but without a past history of acute myocardial infarction.
In particular, acute myocardial infarction in the distribution of the circumflex artery is likely to produce a nondiagnostic ECG. [10] The use of additional ECG leads like right-sided leads V3R and V4R and posterior leads V7, V8, and V9 may improve sensitivity for right ventricular and posterior myocardial infarction. [citation needed]