Tachycardia is a condition where the heart beats faster than it normally would. A person with tachycardia usually has a heart rate of more than 100 beats per minute. Sometimes, a hastened heartbeat isn’t a sign of a disorder. The heartbeat can speed up due to many factors such as exercise or stress. However, tachycardia occurs even if there isn’t a reason for the heart to speed up.
The most common type of tachycardia is known as atrial fibrillation. This type of tachycardia is a “quivering” type of movement that results in the heart not being able to pump blood effectively.
This condition is a combination of both previously mentioned sick sinus syndromes. In Bradycardia-Tachycardia, the heart has an irregular rate that may be too slow or too fast.
Causes of Sinus Arrhythmia
Experts are still unsure about what causes sick sinus syndrome. One possible cause is age. Over the years, the SA node can accumulate damage that can cause it to malfunction and cause heart rate irregularities.
Other conditions that can result in sick sinus syndrome are:
- Heart diseases such as coronary heart disease, cardiomyopathy, and other inflammatory conditions of the heart.
- Certain medications for hypertension or Alzheimer’s such as antiarrhythmics or beta blockers.
- History of a heart attack.
- Trauma that results in scarring of the SA node, typically from heart surgery.
- Excess thyroxine in the body resulting from hyperthyroidism.
Symptoms of Sinus Arrhythmia
Most of the time, sick sinus syndrome does not cause any notable symptoms. Most patients rule out the symptoms as unrelated to a heart condition.