Physiology Endocrinology and Reproduction 6a3153fe Rapid infusion of insulin cause: A Hyperkalemia B Hypokalemia C Hypernatremia D Hyponatremia High-Yield Explanation Ans. (b) Hypokalemia(Ref: Ganong, 25th ed/p.432)Insulin causes potassium ions to enter into the cell. This action decreases extracellular potassium levels (hypokalemia)