Some useful comments to help understand things deeper:
Originally Posted by Courtney1202
3. Hyperkalemia presents on an EKG as tall peaked T-waves
This is only true if the tall peaked T-waves are universal (ie, on every lead). If you see tall, peaked T-waves on one subset of leads, such as the inferior leads (II, III, and AVF), it could actually indicate the onset of an acute MI.
Also, hyperkalemia doesn't always produce T wave changes. I routinely have patients with K+ levels above 6 with no noticable EKG changes.
4. The antidote for Mag Sulfate toxicity is ---Calcium Gluconate
Calcium isn't an antidote for hypermagnesemia. Renal filtration is how excess Mg is removed-- that or of course dialysis.
Instead, calcium helps to stabilize the electrical gradients of muscle and nerve cells, which helps to prevent dysryhthmias.
Also, Calcium gluconate is only one available form. Calcium chloride is much more potent.
Hope this helps!