Final answer:
Loop diuretics can cause electrolyte abnormalities, including low levels of sodium, chloride, potassium, and calcium.
Step-by-step explanation:
Loop diuretics, such as furosemide, can cause electrolyte abnormalities, particularly in the levels of sodium (Na+), chloride (Cl-), potassium (K+), and calcium (Ca2+). Loop diuretics inhibit the reabsorption of Na+ and Cl- ions, leading to increased excretion of these electrolytes in the urine. This can result in hyponatremia (low sodium), hypochloremia (low chloride), hypokalemia (low potassium), and hypocalcemia (low calcium).