Magnesium sulfate (preeclampsia / eclampsia)
Magnesium sulfate for preeclampsia/eclampsia (ACOG PB 222, Magpie): loading volume for the 4 or 6 g load and maintenance mL/h at the bag concentration, halved in renal impairment.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Loading dose
- 4 g
- Maintenance rate
- 2 g/h
- Bag concentration
- 0.04 g/mL
Result: Loading 4 g = 100 mL over 20-30 min; maintenance 2 g/h = 50 mL/h.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Loading dose
- Maintenance rate
- Bag concentration
- Renal impairment
How this is calculated
ACOG Practice Bulletin 222, Gestational Hypertension and Preeclampsia (2020); Magpie Trial (Lancet. 2002;359(9321):1877-1890). 4-6 g load over 20-30 min, 1-2 g/h maintenance; renal impairment halves the maintenance default. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.