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Year : 2019  |  Volume : 24  |  Issue : 5  |  Page : 365-371

The effect of subcutaneous and intracutaneous injections of sterile water and normal saline on pain intensity in nulliparous women: A randomized controlled trial

1 Nursing and Midwifery Care Research Center, Faculty of Nursing and Midwifery, Jahrom University of Medical Sciences, Jahrom, Iran
2 Department of Anaesthesiology and Critical Care and Pain Medicine, Shahid Modarres Hospital, Saveh University of Medical Sciences, Saveh, Iran
3 Department of Obstetrics and Gynecology, Fatemieh Hospital, Hamadan University of Medical Sciences, Hamadan, Iran

Correspondence Address:
Ms. Mehri Rezaie
Islamic Republic Street, Central building of Saveh Medical Sciences University, Markazi
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijnmr.IJNMR_87_18

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Background: Normal vaginal delivery is considered a painful process and it is difficult to tolerate the pain. The goal of this study was to compare the effect of injection of sterile distilled water and normal saline on pain intensity in nulliparous women. Materials and Methods: This triple-blind clinical trial was conducted on 164 nulliparous women randomly selected from among those who were hospitalized in Motahari Hospital of Jahrom, Iran, from 1 May 2012 to 1 October 2013. Women with a gestational age of 37–42 weeks, dilatation of 4–6 cm, and delivery 180 min after the intervention were selected. The subjects were randomly allocated to four groups of intracutaneous and subcutaneous sterile water and normal saline injections. Pain severity was measured 5 min before the injection and every 30 min up to 3 h after the injection using a visual analog scale. The data were analyzed using Chi-square, Scheffe, and Spearman's correlation tests in SPSS software. Results: There was no significant difference among the four studied groups concerning gestational age and other demographic characteristics. Chi-square test showed lower pain intensity 120 min after the injection in group 4 (subcutaneous injection of normal saline) (F3= 14.75, p < 0.001) and 150 min after the injection in group 3 (intracutaneous injection of normal saline) (F3= 14.75, p < 0.001). Chi-square test showed that the duration of the second stage of labor was shorter in group 4 participants (subcutaneous injection of normal saline) (F3= −'12.23, p < 0.001). Conclusions: The study showed that subcutaneous and intracutaneous injection of normal saline reduced the intensity of pain during childbirth.

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