I can answer your question:
1. Sinus arrhythmia is caused by a slight influence on heart rate when people inhale and exhale, which belongs to a roughly normal range. It has nothing to do with heart disease!
2.v 1v2 is QS. If it is the elderly, it may be the manifestation of old anterior myocardial infarction, but if it appears in young people, it is caused by the position of the heart, which is called anti-clock phase inversion in medicine. It is more common in short and fat people. Of course, your health may be good, but it will also happen, which is within the normal range and has nothing to do with heart disease!
Intermittent heart beats, mainly caused by premature beats, such as fatigue, drinking, drinking tea, coffee, lack of sleep, tension, excitement, colds and so on. And generally do not need medication, you can improve yourself by avoiding the above factors. If you really need some medicine, you can take oryzanol tablets. Oryzanol is a vitamin and has no side effects.