Introduction:
During pregnancy and postpartum, sleeping disorders constitute a relatively frequent phenomenon,which is likely to lead to physical and mental health complications^1-3. Low-quality sleep during perinatal period can be associated with increased symptoms of insomnia, snoring and postpartum depression^2,4,5. We aimed to investigate the prevalence of sleeping disordersduring perinatal period and their correlation with depressive symptomatology.

Material and Methods:
This cross-sectional study recruited women from three Greek maternity hospitals between May 2017 and February 2018. Data were collected with a self-administrated structured questionnaire completed by postpartum women. Participants also completed three scales that examine the physical and mental health compared with energy before and after sleep (VAS-F, GSDS)^6-8 and the quality and quantity of sleep (AIS, GSDS)^8-10. Finally, women also completed the Edinburgh Postnatal Depression Scale (EPDS)^11,12.

Results:
Of 275 women recruited to the study, a small percentage of 8.7% declared extremely sleepy on the VAS-F scale and 102 women (37.2%) reported symptoms of insomnia according to AIS scale.Most of the women with symptoms of insomnia (98 out of 102)reported significantly less well-being the next day compared to the prenatal period.Οn the GSDS scale, a percentage of 31%, reported frequent awakenings all days of the week. Finally, according to EPDS scale, sadness negatively affected sleep sometimes in 17.5% of participants while most of the time at 6.6% of postpartum women.

Conclusions:
Our data supports that an increasing amount of postpartum women mention poor – quality sleep (or low quality sleep) and suffer from sleep deprivation. Insomnia is an extremely important risk factor for postpartum depression. In addition, factors that contribute to poor sleep quality such as smoking and coffee consumption, weight gain and snoring can also contribute to the mother's physical and psychological state.