Fetal heart rate variability during labor.
D000700:Analgesics / Q000494:pharmacology; D000818:Animals; D036861:Delivery, Obstetric; D005260:Female; D005318:Fetal Heart / Q000187:drug effects; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007231:Infant, Newborn; D008431:Maternal-Fetal Exchange / Q000187:drug effects; D008614:Meperidine / Q000494:pharmacology; D009638:Norepinephrine / Q000494:pharmacology; D011247:Pregnancy; D012756:Sheep
D000700:Analgesics; D008614:Meperidine; D009638:Norepinephrine