Diseases
arrhythmias
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Overview
An arrhythmia is an abnormality of the heart's rhythm. It may beat too slowly, too quickly, or irregularly. These abnormalities range from a minor inconvenience or discomfort to a potentially fatal problem.
Symptoms
- shortness of breath
- chest pain
- a racing heartbeat (tachycardia)
- a fluttering in the chest
- a slow heartbeat (bradycardia)
Causes
- current heart attack or scarring from a previous heart attack
- blocked arteries in the heart (coronary artery disease)
- changes to the heart's structure, such as from cardiomyopathy
Risk factors
- coronary artery disease, other heart problems and previous heart surgery.
- high blood pressure.
- congenital heart disease.
Diagnosis
- electrocardiogram (ecg or ekg).
- holter monitor.
- event recorder.
Medicines used
Frequently asked questions
What is arrhythmias?
An arrhythmia is an abnormality of the heart's rhythm. It may beat too slowly, too quickly, or irregularly. These abnormalities range from a minor inconvenience or discomfort to a potentially fatal problem.
What are the symptoms of arrhythmias?
shortness of breath, chest pain, a racing heartbeat (tachycardia), a fluttering in the chest, a slow heartbeat (bradycardia)
What causes arrhythmias?
current heart attack or scarring from a previous heart attack; blocked arteries in the heart (coronary artery disease); changes to the heart's structure, such as from cardiomyopathy
Which medicines are used for arrhythmias?
amiodarone, flecainide, lidocaine, mexiletine, propafenone, quinidine, sotalol, verapamil
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