Overview
The heart's rhythm is controlled by electrical signals. When these signals do not work properly, an arrhythmia occurs. Many arrhythmias are harmless, but some increase the risk of stroke or can be life-threatening.
Symptoms
- Fluttering, racing or pounding heartbeat (palpitations)
- Slow heartbeat
- Dizziness or fainting
- Shortness of breath
- Chest discomfort
Causes and risk factors
Causes include coronary artery disease, previous heart attack, high blood pressure, heart valve disease, thyroid problems, certain medicines, caffeine, alcohol and stress. Some people are born with electrical pathway problems.
Diagnosis
An ECG records the heart's rhythm. A Holter monitor, event recorder, echocardiogram or an electrophysiology study may be needed.
Treatment
Treatment depends on the type and may include lifestyle changes, medicines, blood thinners to prevent stroke, cardioversion, catheter ablation, a pacemaker or an implantable defibrillator (ICD).
When to see a doctor
See a doctor if you have frequent palpitations or episodes of dizziness. Call for emergency help for fainting, chest pain or palpitations with breathlessness.
This information is for general education and does not replace advice from a qualified doctor. For a medical emergency, call +92-51-8446666 or go to the nearest emergency department.
