Heparin versus normal saline as a peripheral line flush in maintenance of intermittent intravenous lines in obstetric patients

To compare heparin sodium (100 United States Pharmacopeia U/mL) with 0.9% sodium chloride for use in the maintenance of intermittent intravenous (IV) devices during pregnancy. Women at 26–34 weeks' gestation who required serial phlebotomy were assigned randomly to heparin or normal saline flush...

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