All we can be affected by irregular and rapid heartbeat, and a number of factors are contributing to the symptoms you experience. Young and otherwise healthy people who experience these seizures with rapid pulse, makes little of it, except that they notice palpitations. Do you have an underlying heart disease, a rhythm disturbance in the anterior chamber to be a strain on your heart and require treatment?
In a larger study of many patients with attacks of supraventricular tachycardia was found following the occurrence of symptoms: palpitations (96%), dizziness (75%), shortness of breath (47%), chest pain (35%), fatigue (23%), floppiness (20%), sweating (17%), nausea (13%). Some may notice an increased urge to urinate after a seizure. Many are naturally enough, worried and anxious under such attacks.
In sum, this change in heart rate which occurs suddenly, and disappears by itself within a few minutes. Others can go with complaints from the busy heart for several days.