Sleep disorders in pregnancy.

Context: The precise function of sleep in animals and human beings is still unknown, and any sort of physical, social or psychological variation may change the normal sleep-wake cycle.

Purpose: This research aims is to determine the sleep disorders (SD) for each of the three trimesters of the pregnancy comparing them to the pre-pregnancy state (PG).

Method: SD were investigated in three hundred pregnant women 11- to 40-years-old through with a brief clinical interview based on directed questions.