Maternal morbidity rate is higher with prolonged intake of tocolytic magnesium sulfate compared to < or =48-h regimen. Despite similar neonatal morbidity and mortality rates, bone demineralization in the neonates may be encountered.

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The three modes of patient-controlled epidural analgesia supplemented by a background infusion of 6 mL h(-1) were equally effective for labour analgesia with a trend for decreased rescue analgesia in the group with a larger bolus dose and a longer lockout interval.

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