Still a sleep and undisturbed
They rue the fact that while there is evidence that very disrupted sleep and clinical sleep disorders can lead to poor pregnancy outcomes, few studies have looked at the opposite end of the spectrum, such as long periods of undisturbed sleep. It can lead to poor pregnancy outcomes, including growth restriction and preterm growth. Disruptive sleep comes with its own ill effects. Sleep is important, but it must be of the required amountĪt the same time, researchers say that this does not mean that pregnant women should wake themselves up at night. This is important because low blood pressure can cause fetal growth problems, preterm birth and stillbirth.
They say that these brief increases in blood pressure may be able to prevent long periods of relatively low pressure. But when someone is awakened, there is a surge in the nervous system activity that causes transient increases in blood pressure. Researchers of the above-mentioned study say that blood pressure reaches its lowest point during sleep. More News Researchers point towards role of blood pressure
In the intended answer, "without" is a preposition, and its phrase ("without being disturbed.") differentiates the kind of sleep being discussed as uninterrupted sleep (as opposed to interrupted sleep), performing the function of an adjective on the noun "sleep".