What is the Prognosis of Sick Sinus Syndrome?

By  ,  Onlymyhealth editorial team
Jul 10, 2014

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Quick Bites

  • When sinus node dysfunctions it is known as sick sinus syndrome.
  • A slow pulse rate and fatigue are the symptoms.
  • Sinoatrial block and sinus arrest are two probable causes.
  • The outlook largely depends on pacemaker implantation.

What is Sick Sinus Syndrome?

Sick sinus syndrome is a condition in which the sinus node begins to dysfunction. A person suffering from sick sinus syndrome may also suffer from heart rhythm problems which are either too fast or either too slow. Although the condition is rare but, the chances of developing the condition increases with age.

People who acquire sick sinus syndrome eventually have to get a pacemaker installed to regularize their heart beats.

Sick Sinus Syndrome Prognosis

What are the Symptoms of Sick Sinus Syndrome?

In the initial stage, there are no signs or symptoms seen. However, in some cases the symptoms seen include:

  • A slower pulse rate
  • Fatigue
  • Dizziness
  • Fainting
  • Breathlessness
  • Pain in the chest
  • Palpitations

These symptoms are caused due to a reduced a reduction in the flow of blood to the brain because of abnormal beating of the heart.

Sick Sinus Syndrome Prognosis

What are the Causes of Sick Sinus Syndrome?

The heart consist four chambers-the two upper chambers (atria) and two lower chambers (ventricles). Rhythm of the heart is usually controlled by the sinoatrial (SA) node or the sinus node which is also known as the natural pacemaker which is responsible for producing electrical impulses that rigger the heartbeat. These electrical impulses travel across both chambers of the heart from the sinus node. This movement causes the chambers to contract and pump blood out of the lungs and body.

When the sinus node stops functioning properly the heart beat becomes abnormal and irregular.
The causes of this condition largely involves the following causes:

  • Sinoatrial block
  • Sinus arrest
  • Bradycardia-tachycardia syndrome

Prognosis for Sick Sinus Syndrome

With time the sick sinus syndrome progresses and can get worse. People who have pacemaker implanted in their body have a better outlook than people who avoid a pacemaker. Also, the outlook can vary largely based on the type of heart rhythm problems, age, or any other kind of heart problems.

Image courtesy: Getty Images

Read more on Heart Health.

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