title: Systemic analgesics during labor.
mesh_terms: D000701:Analgesics, Opioid / Q000008:administration & dosage* / Q000378:metabolism; D000773:Anesthesia, Obstetrical; D002319:Cardiovascular System / Q000187:drug effects; D004064:Digestive System / Q000187:drug effects; D005260:Female; D006340:Heart Rate, Fetal / Q000187:drug effects; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D012137:Respiratory System / Q000187:drug effects; D014590:Uterine Contraction / Q000187:drug effects
chemical_list: D000701:Analgesics, Opioid