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Myocardial disorder
A disorder that affects the muscle tissue of the heart. Representative examples include myocardial infarction, myocarditis, and cardiomyopathy. [from NCI]
Atrial fibrillation
An atrial arrhythmia characterized by disorganized atrial activity without discrete P waves on the surface EKG, but instead by an undulating baseline or more sharply circumscribed atrial deflections of varying amplitude an frequency ranging from 350 to 600 per minute. [from HPO]
Cardiomyopathy
A myocardial disorder in which the heart muscle is structurally and functionally abnormal, in the absence of coronary artery disease, hypertension, valvular disease and congenital heart disease sufficient to cause the observed myocardial abnormality. [from HPO]
Sinus bradycardia
Bradycardia related to a mean resting sinus rate of less than 50 beats per minute. [from HPO]
Congestive heart failure
The presence of an abnormality of cardiac function that is responsible for the failure of the heart to pump blood at a rate that is commensurate with the needs of the tissues or a state in which abnormally elevated filling pressures are required for the heart to do so. Heart failure is frequently related to a defect in myocardial contraction. [from HPO]
Heart failure
Inability of the heart to pump blood at an adequate rate to meet tissue metabolic requirements. Clinical symptoms of heart failure include: unusual dyspnea on light exertion, recurrent dyspnea occurring in the supine position, fluid retention or rales, jugular venous distension, pulmonary edema on physical exam, or pulmonary edema on chest x-ray presumed to be cardiac dysfunction. [from NCI]
Sudden cardiac death
The heart suddenly and unexpectedly stops beating resulting in death within a short time period (generally within 1 h of symptom onset). [from HPO]
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