If in a dream the doctor makes you the diagnosis arrhythmia, then in reality your alarms concerning your health are vain. If dreamed you that you feel that you have an arrhythmia, then in real life your people around should reconcile to the fact that you have no real feeling of time at all. You never learn to arrive on time.
Be sure and keep any other thoughts out of your mind before drifting to sleep as a cluttered mind can decrease the chances that you will remember your dreams upon waking. Also, focusing on remembering your dreams upon waking in the morning is another very important thing. This sounds very easy, but is often hard for some to do. Interpret a dream by "dictionary dream of interpretation"
When you very first wake up, simply think about your dreams. Don't allow your mind to drift off to other things, just lay there and think about the things you dreamt about the night before - dictionary dream meaning.