We would like to thank the following people for their kind contributions to the medical information on this website.

Dr Elijah R Behr, Reader and Honorary Consultant Electrophysiologist Cardiac and Vascular Division, St George’s University of London, Professor William J McKenna, Dr Nabeel Sheikh and Louise Roberts (Illustrations).

We have information available on the following conditions:

Arrhythmogenic right ventricular cardiomyopathy (ARVC)

The incidence of arrhythmogenic right ventricular cardiomyopathy (ARVC) is now thought to be higher than previously believed (affecting 1 in every 1000 individuals), due to the availability of better diagnostic techniques and general awareness of the disorder amongst the medical profession. ARVC was first recognised in the late 1970’s. It is anticipated that even more information regarding ARVC will be available in the coming years, to help us understand the natural history of the condition.

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Atrial fibrillation

Atrial fibrillation (AF) is the most common heart rhythm disorder. It affects around 1-2% of the overall population. It is more common in men and is increasingly common as people age [1]. While it is associated with other medical conditions such as high blood pressure, obesity and other types of heart disease [2], people who are otherwise fit and healthy may still develop AF.

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Brugada syndrome

In the western world it affects mainly young and middle-aged adult men. It has been associated with mutations in the same sodium channel that is affected in long QT syndrome, but this appears to account for only 1 in every 5 people with the condition. The sodium channel behaves abnormally in that movement of sodium ions into the cells is restricted. This results in particular changes on the ECG but no abnormalities in the structure of the heart. Other genes have been described as being involved in Brugada syndrome that produce calcium ion channels and a protein in the cell surface (membrane) that interacts with the sodium channel. They have, however, only been detected in a small number of carriers.

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Hypertrophic cardiomyopathy (HCM)

Read personal stories from myheart members with hypertrophic cardiomyopathy here. Hypertrophic cardiomyopathy (HCM) is a condition where the heart muscle becomes thickened. Traditionally, the term

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Long QT syndrome (LQTS)

Long QT syndrome (LQTS) is an ion channelopathy. Ion channelopathies (also sometimes referred to as arrhythmia syndromes or cardiac channelopathies)affect the electrical functioning of the heart without affecting the heart’s structure. They are a group of rare genetic conditions that are caused by abnormalities of the DNA known as mutations. They are usually inherited from parents although they can occur for the first time in a person. (If they occur for the first time they are described as sporadic.)

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Marfan’s syndrome

Marfan’s syndrome is a disorder that affects many parts of the body including the heart, blood vessels, skeleton, and eyes. One in 5000 people in

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Myocarditis

Read personal stories from myheart members with myocarditis here. The term myocarditis refers to inflammation of the heart muscle. It is most often due to viral

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Wolff-Parkinson-White syndrome (WPW)

Read personal stories from myheart member with Wolff-Parkinson-White syndrome here. Wolff-Parkinson-White syndrome (WPW) results from an additional electrical connection between the upper chambers of the heart

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