IRCT2015053022473N1 IRCT 2017-10-22 Vice chancellor for research Mashhad University of Medical Sciences A comparison of spinal and epidural analgesia for labor pain and maternal and neonatal outcomes A comparison of spinal and epidural analgesia for labor pain and maternal and neonatal outcomes 2017-09-23 anticipated 70 Complete https://irct.ir/trial/19372 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Supportive, Other design features: since this is an interventional study, in order to minimize the systematic error, it will be performed as double-blind. Both the patient and the person who completed the questionnaire were blind about assigning the groups. 2 Labor analgesia. Intervention 1: Intervention 1: At first, one liter of ringer lactate solution will be infused. Under sterile technique, injection will be done at decabitus position. The epidural needle No.17 is inserted between L3-L4 or L4-L5 space. If the blood and CSF are not aspirated, then 3 cc lidocaine 1% was injected. Then, through catheter, 4 cc bupivacaine 0.5% with 4 cc normal saline and 50 microgram of Fentanyl will injected in this space. Intervention 2: Intervention 2: At first, one liter of ringer lactate solution will be infused. Under sterile technique, injection will be done at decabitus position. The spinal needle No.25 is inserted between L3-L4 or L4-L5 space; after extrusion of 1 cc of csf, 3.75 cc bupivacaine and 0.5 cc Fentanyl (25 microgram) which is diluted in 0.75 of normal saline will injected in this space.