In this research, simple sampling method with random allocation to groups was used. Women who met the criteria for entry into the research requirements and at the time of the study, due to labor pain, they were referred to the hospital and admitted, easily entered the study. In three groups, the severity of pain is measured by the McGill Scale (VAS) before intervention. In the Entonox group, a dilatation of 4 to 5 cm and more, the study unit entered the study and provides explanations and training on how to use Entonox gas and the time it is used.The mother is told to put her hand on her abdomen and as soon as the abdominal stiffness lasts about 30 to 40 seconds before the onset of pain and inhale the gas in a deep and quiet tail. Gas inhalation continued until the end of the pain and after the end of the pain, gas inhalation was stopped. In fact this method is the mother's participation in the course of her treatment and is a kind of self-control and was continued until delivery.
In the massage group, a dilatation of 4 to 5 cm and more, the study unit entered the study, when the abdomen was tightened, (it is stated by the mother) the mother was lying lateral or standing so that her hands were leaning forward on the bed and the researcher's help was left behind and on the left or right of the mother. As soon as the abdomen was tightened and declared by the mother, with the palm of the hand, massage started from the lower back of the waist in a transverse direction from one side to the other, moving with the hands moving down and the buttocks, and moving the gap between the two hips and then down and returning to the first.The massage was actually in the form of B, the straight line is the lower back of the waist and the two rings were two hips.The third group, the control group, received routine care.The severity of pain was measured by McGill Scale every 45 minutes to 225 minutes in the first stage of labor and in the second stage of delivery one time until delivery in all three groups.
In order to randomize, the cards were prepared and three numbers 1, 2 and 3, were written and placed inside the packets in an unspecified manner and research unit removed one of the envelopes, if there was a number 1 in the group of B massage, number 2 in the group of Entonox gas, number 3 in the group of usual care were placed.
Based on the inclusion criteria and obtaining a written consent of the samples about how to do the study, information about pain intensity immediately before intervention and 45, 90, 135,180, 225 minutes after intervention, delivery type, duration of the active phase of the first stage of labor, duration of the second stage of labor, postpartum hemorrhage through the examination and observation were collected.
In order to blind the study the assessor from the group assigned to the samples was not aware.The researcher did not know from the group assigned to the specimens.
Inclusion criteria: Pregnant women aged between 18-35 years old, Women with first, second, third and fourth pregnancies, Gestational age between 37 and 41 weeks, Singletone pregnancy, Head of presentation(cephalic), Women in dilatation 4-6 centimeter or more;
Non-compliance criteria: High-risk pregnant women (presence of previous scars on the uterus and abdomen, diabetic women, preeclampsia and eclampsia, Polyhydramnious, Oligohydramnious, fetal death and etc.) There are skin or lumbar problems in the lower back region in the massage group