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Oral magnesium supplementation improves fetal circulation.
F Facchinetti1, C Battaglia, R Benatti
1Department of Obstetrics and Gynaecology, University of Modena Medical School, Italy.
Magnesium Research
|September 1, 1992
Summary
Oral magnesium supplementation during pregnancy is safe and improves fetal circulation. This study found that magnesium (Mg) reduced blood vessel resistance in fetuses, indicating a positive impact on fetal blood flow.
Area of Science:
- Obstetrics and Gynecology
- Maternal-Fetal Medicine
- Pharmacology
Background:
- Plasma magnesium levels decrease during pregnancy due to placental and fetal accumulation.
- Magnesium (Mg) supplementation is common in pregnancy, especially for preterm labor.
- Combining oral Mg with ritodrine may reduce ritodrine dosage and side effects.
Purpose of the Study:
- To evaluate the effects of combined oral magnesium and ritodrine treatment on fetal blood flow.
- To compare fetal circulation changes in women receiving Mg plus ritodrine versus ritodrine plus placebo.
- To assess the safety and efficacy of oral magnesium supplementation in pregnancy.
Main Methods:
- Pulsed Doppler ultrasound was used to measure fetal blood flow.
- Participants received either oral magnesium (magnesium pyrrolidone carboxylic acid) 360 mg/day plus ritodrine or ritodrine plus placebo.
- Plasma and mononuclear cell magnesium levels were measured.
Main Results:
- The magnesium-treated group exhibited decreased vascular resistance in the umbilical artery and fetal middle cerebral artery.
- Fetal vasculature demonstrated sensitivity to exogenous magnesium.
- Intracellular magnesium levels increased by approximately 10%.
Conclusions:
- Oral magnesium supplementation during pregnancy is safe.
- Magnesium supplementation positively influences fetal circulation.
- Combined Mg and ritodrine therapy may offer benefits in managing preterm labor with reduced side effects.