Examples include having a low thyroid level (hypothyroidism) or an electrolyte imbalance, such as too much potassium
in the blood.
4. Some medicines for treating heart
problems or high blood pressure, such as beta-blockers, antiarrhythmics, and digoxin.
I've checked electrolyte imbalance already by blood tests (as i understand it):
Ca++, Free Calcium, Calcium ionized - 1.14 mmol/l refer:(1.03 - 1.23)
Ca, Calcium total - 2.31 mmol/l refer:(2.10 - 2.55)
К+, Potassium - 4.3 mmol/l refer:(3.