A young girl has consumed barium carbonate with suicidal intend She complains of generalized muscle weakness. The most likely electrolyte is-
Hyponatremia
Hypocalcemia
Hypokalemia
Hypomagnesemia
Oral or inhalation administration of barium carbonate in rats resulted in adverse .... Other symptoms and signs are hypokalemia, cardiac arrhythmias, cardiac .ECG showed flat ST with U waves in 4 patients .and there is hypokalemia Clinical signs include muscle weakness, cramping, fasciculations, paralytic ileus, and when hypokalemia is severe, hypoventilation, and hypotension. ECG changes typically occur when serum potassium is < 3 mEq/L, and include ST segment sagging, T wave depression, and U wave elevation. Ref Harrison 20th edition pg 676
Toxicology