机译:围产期结局:静脉注射患者自控芬太尼与分娩时不镇痛的比较
Department of Obstetrics and Gynecology, School of Medicine, Keio University, 35 Shinanomachi;
Department of Anesthesiology, School of Medicine, Keio University, Tokyo, Japan;
Division of Anesthesiology, Aiiku Hospital, Tokyo, Japan;
Cesarean section; Fentanyl; Intravenous patient-controlled analgesia; Labor pain relief; Prolonged labor;