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  • Title: [Pros and cons of magnesium sulfate as a tocolytic].
    Author: Bozhinova S, Markova S, Tsvetkov Ts, Penkov V, Ivanova I.
    Journal: Akush Ginekol (Sofiia); 2002; 41(6):17-22. PubMed ID: 12577499.
    Abstract:
    Magnesium sulphate (MgSO4) is with a proved effectiveness in cases of praeclampsia/eclampsia, but its use as a tocolytic is discussed in the last few years. That is why we had for an object to study its effect as a tocolytic in cases of abortions and premature labours. The study is prospective and if is made in I-st obstetric clinic of High Medical School--Pleven. Treatment with Cormagnesin was carried out to pregnant women for suppressing the uterine activity. Cormagnesin 200 (1 amp-10 ml) contains 1000 mg MgSO4, and Cormagnesin 400 (1 amp-10 ml) contains 2000 mg MgSO4. The medicine was administered in dosage of 4 or 5 g for 30 min, and after that if there were any uterine contractions the infusion was carried on with additional 5 g MgSO4 for 6 to 12 h. The total dosage was from 4 to 60 g MgSO4. The authors reported on very good effect in cases with pains and increased uterine tone--18 (36.73%), as well as in cases with pains and irregular uterine contractions 5 (10.21%), while the treatment was without any effect in cases with uterine contractions on 15-20 min, increased uterine tone, bleeding and Pelvic score 1-3 points in spite of high dosages of MgSO4 and longer duration of treatment. The authors made the conclusion, that the subjective complaints should not be accepted as an indication for administration of MgSO4, and MgSO4 should be administered in cases with increased uterine tone and irregular uterine contractions. Every genital bleeding and suspicion for placental abruption should be defined more precisely, because lately diagnosed placental abruption and unjustified expectation for suppression of uterine activity by MgSO4, may lead to increase of perinatal morbidity and mortality. In spite of the controversial data about MgSO4 as a tocolytic, its administration is justified and necessary.
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