I am 72 years old. Have been diagnosed with heart mumur a few years ago. After consultation approx 2 years ago I have moderate leaking heart valve. I have always had mild palpitations for many years. Today it's been fluttering and irregular all day and must say I am starting to be quite anxious. Yesterday I fasted for 24 hours with only 500 calories intake. Do you think there is any connection with fasting.
If you already have a known arrhythmia such as atrial fibrillation or atrial flutter, it is quite possible that fasting led to some dehydration, and consequently a rise in your heart rate which exacerbated your underlying condition. Any state that causes an elevation in the heart rate (stress, dehydration, infection, inflammation, etc) can exacerbate/worsen someone with a known arrhythmia. Try to stay hydrated and avoid periods of dehydration as such. If you continue to have symptoms or feel that your palpitations are worse and/or associated with new symptoms, you should see a physician for further evaluation.
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