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Osteopenic effects of MgSO4 in multiple pregnancies
Walid Kaplan1, Morey W Haymond, Siripoom McKay
1Department of Pediatric Endocrinology and Metabolism, Texas Children's Hospital, Houston, TX, USA.
Journal of Pediatric Endocrinology & Metabolism : JPEM
|December 19, 2006
Summary
Prolonged maternal magnesium sulfate (MgSO4) treatment in multiple pregnancies can lead to infant hypocalcemia, osteopenia, and fractures. Early identification and management are crucial for these high-risk newborns.
Area of Science:
- Neonatal Medicine
- Pediatric Orthopedics
- Maternal-Fetal Medicine
Background:
- Magnesium sulfate (MgSO4) is commonly used to manage preterm labor.
- Prolonged exposure to MgSO4 in utero may have adverse effects on fetal bone development.
Purpose of the Study:
- To investigate the impact of extended maternal MgSO4 treatment on infants from multiple pregnancies.
- To describe the clinical and radiographic findings in infants exposed to high-dose MgSO4.
Main Methods:
- A case series design was employed.
- Infants presenting with osteopenia secondary to maternal MgSO4 administration were analyzed.
- Imaging studies were performed to assess bone health.
Main Results:
- Ten premature infants from multiple pregnancies exposed to MgSO4 exhibited hypermagnesemia, hypocalcemia, and elevated alkaline phosphatase.
- Radiographic evidence revealed diffuse osteopenia and probable rib fractures.
- Follow-up to nine months showed resolution or near-resolution of osteopenia in all infants.
Conclusions:
- High-dose, prolonged maternal MgSO4 exposure, particularly in multiple gestations, increases infant risk for hypocalcemia, osteopenia, and fractures.
- Proactive identification and management strategies are recommended for affected newborns.
- This highlights the importance of monitoring bone health in infants exposed to therapeutic MgSO4.
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