Does the salt level have anything to do with arrhythmias? If so what are the results caused by not enough salt?

Complicated question. Salt alone should not affect arrythmias directly. It has a more direct effect on blood pressure and if it gets too high or too low can affect the neurological system and affect mental functioning and even cause comas. It affects the way the kidneys handle fluids. Salt regulation in the body is very complicated. It is important if you have a heart condition to watch your salt intake carefully.