What are the s/s of low vs high Mg,”Low-Tetany-Torsades-Low K June 22, 2017 mfadmin Medicine Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review. What are the s/s of low vs high Mg,”Low-Tetany-Torsades-Low K Low CHigh-hTN-Bradycardia”