Serum ionized magnesium levels during intravenous MGSO₄ therapy of preeclamptic women

Abstract

Using a novel ion-selective electrode, we have shown that there is over a 100% increase in venous serum levels of ionized Mg during intravenous MgSO₄ therapy of preeclamptic patients. By 6 hours of therapy, the range is 0.92-1.65 mmol/1 (95% C.I.). There are strong correlations between levels of ionized and total Mg throughout therapy (r=0.92-0.95.p<0.01).

Key Words:

• ionized magnesium
• magnesium
• MgSO₄ therapy
• preeclampsia