Background:

Pregnancy causes several physiological, anatomical, hormonal and psychological changes in women. Pregnancy changes can affect the pregnant woman's sleep, reducing its quality and duration.

Objective:

This study aims to verify the prevalence of sleep alterations and associated factors in pregnant women.

Methods:

Epidemiological, cross-sectional and analytical study carried out with pregnant women registered in the Family Health Strategy Teams of the urban area of the municipality of Montes Claros in 2018. The probabilistic sample was calculated in 1,180 pregnant women. Data were collected from a questionnaire containing the information of interest with subsequent analysis of the variables.

Results:

It was verified that 87.5% of the participants had sleep alterations during pregnancy. The increase in sleep was reported by 50.5%, the decrease by 21.8% and 15.1% both. Social support (p=0.032), quality of life (p<0.001), stress (p=0.009) and symptoms of depression (p=0.005) were individually associated with sleep disturbance and quality of life was remained associated after adjustment (adjusted PR: 0.482, 95% CI 0.482; p=<0.001).

Conclusion:

There is a high sleep disturbance among pregnant woman, being associated with social support, quality of life, stress and depression.