Document Type: Original Articles


1 Department of midwifery, M.Sc, School of Nursing and Midwifery, Shiraz University of Medical Sciences, Shiraz, Iran

2 Department of Obstetrics and Gynecology, Gynecologist , Medical school, Shiraz University of Medical Sciences, Shiraz, Iran

3 Student Research Committee, School of Nursing and Midwifery, Shiraz University of Medical Sciences, Shiraz, Iran

4 Department of Biostatistics, Shiraz University of Medical Sciences, Shiraz, Iran


AbstractBackground: Sleep disorders like snoring, mouth breathing, andinsomnia are frequent in pregnancy and studies have shown thatpoor sleep is linked to obstetric complications. Muscle relaxationtechnique is an effective method used for improving sleepquality. The purpose of this study was to determine the effectof muscle relaxation technique on fetal outcomes in complicatedpregnancies with sleep disorders.Methods: This study was performed as a clinical trial on 160pregnant women who suffered from preeclampsia and gestationaldiabetes. The participants filled the Pittsburgh Sleep QualityIndex (PSQI) in order to measure the quality and patterns oftheir sleep. The participants with the total score of 5 or morewere included in the present study. Intervention group were askedto use muscle relaxation technique twice a week at home for 8weeks alongside the routine care. Study variables included sleepquality, Apgar scores, birth weight, levels of Interleukin- 6 (IL-6), as well as umbilical cord PH and PO2.Results: The mean score of PSQI before the intervention was9.28±4.16 and 9.18±3.06 in the intervention and control groupswithout a significant difference (P=0.6), respectively. However,PSQI global score of the experimental group was smaller than thecontrol group at the end of the study (P<0.001). Also, birth weight(P=0.04), Apgar score (P=0.01), and umbilical cord blood po2(P=0.03) and PH (P=0.01) were higher, and IL-6 (P=0.04) wassmaller in the experimental group compared to the control group.Conclusion: The results of this study showed that musclerelaxation, as a simple, inexpensive and safe method, canimprove the fetal outcomes such as birth weight, Apgar score,cord blood po2, and cord blood PH, and also it leads to lowerIL-6 in complicated pregnancies.


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