Answer: Emergent Dialysis
Magnesium has fairly good therapeutic margin but hypermagnesemia is a risk in some patients particularly Renal failure. Mild hypermagnesemia may cause weakness, nausea, vomiting and mild hypotension but progressively it can become life threatening. Following is the ballpark clinical signs/symptoms depending on magnesium level.
- 4.0 mEq/L hyporeflexia
- 5.0 mEq/L Prolonged atrioventricular conduction
- 7.0-10.0 mEq/L - loss of patellar reflex
- 10.0-13.0 mEq/L - respiratory depression and various heart block
- Above 13.0 mEq/L - cardiac arrest/Asystole.