system
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human
Simplify this sentence about medical terminology for patients with no medical background.
Relevant data:
"An arrhythmia refers to an irregular heartbeat, which can be caused by a variety of factors such as cardiovascular disease, stress, and certain medications, and can lead to symptoms such as palpitations and shortness of breath."
gpt
An arrhythmia is when your heartbeat is irregular, which can cause problems like feeling your heart race or having trouble breathing.