Heart arrhythmia

Heart arrhythmia (also known as arrhythmia, dysrhythmia, or irregular heartbeat) is a group of conditions in which the heartbeat is irregular, too fast, or too slow. A heart rate that is too fast -- above 100 beats per minute in adults -- is called tachycardia and a heart rate that is too slow -- below 60 beats per minute -- is called bradycardia. Many types of arrhythmia have no symptoms. When symptoms are present these may include palpitations or feeling a pause between heartbeats. In more serious cases there may be lightheadedness, passing out, shortness of breath, or chest pain. While most types of arrhythmia are not serious, some predispose a person to complications such as stroke or heart failure. Others may result in cardiac arrest.

Question: is there a difference between arrhythmia and dysrhythmia
Answer: no