(Topic Requested): Serum Magnesium and Calcium have an intimate and complex relationship best described as “love-hate”. One of our podcast family members sent me this fascinating question: “Should we be following serum calcium levels in patients undergoing IV Mag Sulfate use in obstetrics, in order to identify dangerous hypocalcemia?...Should we be giving these patients prophylactic calcium?” Thera are indeed published case reports of hypocalcemia induced tetany in patients. However, are there national guidelines which call for “calcium surveillance”? Do you remember what the Chvostek's and Trousseau's signs are? Listen in for details.