Rare heart rhythm disorders, which are often hereditary, pose a significant medical challenge. The articles in this section explore these conditions, several of which now have effective treatment options due to a comprehensive understanding of their causes. Researchers are continuing this work to better understand the underlying mechanisms of these rare diseases.
Early repolarization syndrome can be identified by abnormalities on the electrocardiogram, described below, along with clinical signs such as unexplained syncope, ventricular fibrillation or sudden cardiac death. The ECG depicts heartbeats as waves. Each heartbeat is divided into several phases and each one is assigned a letter: P, Q, R, S and T. Early repolarization…
Long QT syndrome is a disorder that causes electrical dysfunction in the heart. It is characterized by an abnormally long heartbeat interval on the electrocardiogram (ECG or EKG). An ECG depicts heartbeats as waves. Each heartbeat is divided into several phases and each one is assigned a letter: P, Q, R, S and T. Long…
Brugada syndrome is a rare genetic disorder, first identified in 1992, which results in a “purely electrical” dysfunction of the heart. It is marked by abnormalities on the electrocardiogram, which are present to varying extents, and an increased risk of cardiac arrest due to ventricular fibrillation.This disorder primarily affects men and is usually diagnosed in…
Short QT syndrome is a disorder that causes electrical dysfunction in the heart. It is a genetic disorder marked by the abnormal shortening of the QT intervals on an electrocardiogram. Each heartbeat is divided into several phases and each is assigned a letter: P, Q, R, S and T. The QT interval refers to the…
Laminopathies are rare genetic disorders. They are caused by mutations in the LMNA gene that encodes two proteins: lamin A and C, which are essential for maintaining the structure and function of the cell nucleus. This genetic disorder causes several diseases, including lamin A/C cardiomyopathy, also known as cardiolaminopathy, which mainly affects the heart and…
Idiopathic ventricular fibrillation is a rare heart rhythm disorder characterized by the chaotic activity of the heart ventricles. It prevents effective cardiac contraction, causes loss of consciousness in just minutes and, in certain cases, is fatal. Ventricular fibrillation is called “idiopathic” when it occurs in a healthy heart without any identifiable cause to prevent it.…
Arrhythmogenic Right Ventricular Dysplasia (ARVD) or Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC) is a hereditary cardiomyopathy (heart muscle disease) in which ventricular muscle cells are gradually destroyed and replaced by fibrous fatty tissue. This disease can also affect the left ventricle or both. ARVD leads to an increased risk of developing a heart rhythm disorder (arrhythmia)…
Answer a few questions and discover our solutions to better support you in your illness or that of a loved one.