Hiro is a 46-year-old male who has recently acquired severe food poisoning, which caused 72 hours of frequent vomiting and diarrhea. The third day after his symptoms began, Hiro experienced heart palpitations and confusion. He had trouble answering simple questions and felt disoriented. His care team was concerned about these new symptoms and decided to perform a urinalysis and several blood tests to determine the cause. These are Hiro’s results:   Blood Calcium Level: 4.6 mEq/L Blood Sodium Level: 140 mEq/L Blood Potassium Level: 2.9 mEq/L Urine Specific Gravity: 1.020 Hiro’s electrolyte imbalance is caused by vomiting and diarrhea. Which of the following could also cause his condition? (Select all that apply.)   Excessive laxative use   Diuretics   Excess aldosterone secretion   Diabetic ketoacidosis   Folic acid supplements

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