Fatemeh Yahyavi Koochaksaraei - Bsc of midwifery School of nursing and midwifery Babol University of medical science, Babol, Iran
Fatemeh Nasiri Amiri - School of nursing and midwifery Babol University of medical science, Babol, Iran
Mahboobeh Faramarzi - School of nursing and midwifery Babol University of medical science, Babol, Iran
Farzan Kheirkhah - School of Medicine Babol University of medical science, Babol, Iran

Backgrounds: The pattern of sleep chenged in pregnancy. sleep quality disorders associated with depression symptoms and poor outcomes. the aim of this study was to determine the relationship between third prenatal sleep qualities and postpartum mental disorders in primiparous referred to prenatal centers of Ayatollah Rohani hospital in Babol, Mazandaran.Material and Method: This is a cross-sectional study was conducted on 300 participants From May, 2017 to june, 2018. The information was collected with demographic, sleep quality Pittsburgh and SCL90 checklist questionnaires in two stages. At first, in the third trimester of pregnancy and second in 4-6 weeks after delivery. SPSS-21 software was used to analyze the data.Result: The overall sleep quality score of most women was more than 5 and 74% (222) suffering from poor sleep quality. In the sub-scales, half of the women reported sleeping periods of 5-6 hours per night, indicating a serious problem. The mean (SD) delay in falling asleep was 2.55 (1.49) hours. 45% (136 people) of women, 58% (174 people), 46% (139) and 71.7% (215) had moderate delays in falling asleep, sleep disturbances, daily dysfunction and sleep quality, respectively. The majority of women reported normal sleep performance. The overall score of sleep quality with a general index of symptoms and all sub-scales has a significant relationship (P <0.05).Conclusion: According to the results of this study, there is a significant relationship between the quality of sleep in the third trimester and psychological symptoms. the lack of attention to sleep disorder in pregnancy can have adverse effects on the mother. Therefore, sleep health education is recommended to prevent mental complications and safe pregnancy.