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Romano–Ward syndrome is the most common form of congenital Long QT syndrome (LQTS), a genetic heart condition that affects the electrical properties of heart muscle cells. [5] Those affected are at risk of abnormal heart rhythms which can lead to fainting, seizures, or sudden death.
Short QT syndrome (SQT) is a very rare genetic disease of the electrical system of the heart, and is associated with an increased risk of abnormal heart rhythms and sudden cardiac death. [1] The syndrome gets its name from a characteristic feature seen on an electrocardiogram (ECG) – a shortening of the QT interval.
Haemochromatosis is protean in its manifestations, i.e., often presenting with signs or symptoms suggestive of other diagnoses that affect specific organ systems.Many of the signs and symptoms below are uncommon, and most patients with the hereditary form of haemochromatosis do not show any overt signs of disease nor do they have premature morbidity, if they are diagnosed early, but, more ...
Ventricular fibrillation (V-fib or VF) is an abnormal heart rhythm in which the ventricles of the heart quiver. [2] It is due to disorganized electrical activity. [2] Ventricular fibrillation results in cardiac arrest with loss of consciousness and no pulse. [1] This is followed by sudden cardiac death in the absence of treatment. [2]
Those affected by arrhythmogenic cardiomyopathy may not have any symptoms at all despite having significant abnormalities in the structure of their hearts. [6] If symptoms do occur, the initial presentation is often due to abnormal heart rhythms (arrhythmias) which in arrhythmogenic cardiomyopathy may take the form of palpitations, or blackouts. [7]
Normal heart rate varies based on a person’s age, fitness and activity levels, temperature, caffeine, stress, and other risk factors (such as blood pressure, chronic diabetes, obesity, etc ...
With all this in mind, heart valves are important because they keep blood flowing in the right direction and ensure oxygen and nutrients reach all the body’s organs. There are a few ways a heart ...
“Heart disease is very common and occurs in 12.1 percent of the U.S. population,” says Kevin J. Croce, MD, a cardiologist at Brigham and Women’s Hospital and an assistant professor of ...