It's difficult to determine what is exactly causing your dizziness, but since you had a negative neurologic and ear work-up, I suspect it may be related to your arrhythmias. When you have a long run of premature beats, the amount of blood the heart pumps to the body is diminished. With diminished blood flow to the brain, dizziness and even loss of consciousness can result. Thus, I suggest that you notify your cardiologist about this episode as soon as possible. I hope you find this information useful.
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