Effect of pain relief on arterial blood gas values during labor.
D001158:Arteries; D002245:Carbon Dioxide / Q000097:blood*; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D008614:Meperidine / Q000627:therapeutic use*; D010100:Oxygen / Q000097:blood*; D010146:Pain / Q000188:drug therapy*; D011247:Pregnancy; D012119:Respiration / Q000187:drug effects
D002245:Carbon Dioxide; D008614:Meperidine; D010100:Oxygen