Continuous intravenous analgesia in labor.
D000773:Anesthesia, Obstetrical; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007263:Infusions, Parenteral; D007743:Labor, Obstetric / Q000187:drug effects*; D008614:Meperidine / Q000008:administration & dosage* / Q000494:pharmacology*; D011247:Pregnancy; D011398:Promethazine / Q000494:pharmacology*
D008614:Meperidine; D011398:Promethazine