A 42-year-old female presents to her primary care provider reporting muscle weakness and cardiac abnormalities. Laboratory tests indicate that she is hypokalemic. Which of the following could be the cause of her condition?

We have electrolytes in our blood, urine (pee), tissues, and other body fluids. Electrolytes are important because they help: Balance the amount of water in our body. Balance our body's acid/base (pH) level.
Common electrolyte imbalances include hyponatremia, hypokalemia, hyperkalemia, hypocalcemia, hypochloremia, and hypophosphatemia. Acid-base imbalances, either acidemia or alkalemia, occur as a result of the addition of acid and depletion of alkali reserve, or the loss of acid with a relative increase in alkali reserve.