Because Brugada syndrome disturbs the heart's rhythm, blood is not pumped effectively through the body.
Symptoms can include:
- Fainting as a result of the brain not receiving enough blood
- A chaotic and uncoordinated electrical pattern (called ventricular fibrillation). In this situation, the heart quivers and stops pumping blood. Sudden death usually occurs unless the heart is electrically shocked back into a normal pattern by a defibrillator.
Causes and Risk Factors
Electrical signals in the heart coordinate when and how often the heart beats. Electrically charged elements flow in and out of the heart cells through tiny pores called channels. The channels control the flow of charged particles through the heart's cells, and thereby the electrical activity of the heart. A defect in the channels causes periods of abnormal electrical activity.
In many cases, the cause of Brugada syndrome is not known. Genetics may play a role in some families.
Brugada syndrome often occurs in young adults.