To measure life.
D000700:Analgesics / Q000494:pharmacology*; D000773:Anesthesia, Obstetrical; D001519:Behavior / Q000187:drug effects*; D002045:Bupivacaine / Q000494:pharmacology; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008431:Maternal-Fetal Exchange; D008614:Meperidine / Q000494:pharmacology; D011247:Pregnancy
D000700:Analgesics; D008614:Meperidine; D002045:Bupivacaine