Causes And Complications Linked To Sick Sinus Syndrome

Sick sinus syndrome or sinus node dysfunction is a defined range of problems with an individual's heart rhythm where the sinus node does not function normally. The rhythm of the heart is controlled by an area of specialized cells in the right atrium of the heart called the sinus node. In healthy individuals, a steady tempo of regular electrical impulses is produced by the sinus node. However, these electrical signals are irregularly paced in individuals affected by sick sinus syndrome. These abnormal heart rhythms may be too slow, too fast, interrupted by long pauses, or any combination of these rhythm issues. Common symptoms indicative of sick sinus syndrome include fatigue, breathlessness, chest pain, palpitations, bradycardia, dizziness, fainting, and confusion. If sick sinus syndrome cannot be managed through the use of medication, a surgical procedure is usually needed.