Polysomnography is used to diagnose, or rule out, many types of sleep disorders including narcolepsy, idiopathic hypersomnia, periodic limb movement disorder (PLMD), REM behavior disorder, parasomnias, and sleep apnea.
Calculating Due Date: Estimated Due Date. Based on the last menstrual period, the estimated due date is 40 weeks from the first day of the period. This is just an estimate since only about 5% of babies are born on their estimated due date.
Due Date Calculator. Find out your due date, and see how big your baby is right now. BabyCenter's Due Date Calculator uses the same approach that your provider is likely to use. It gives you a due date that's 40 weeks from the first day of your last period.he'll measure your baby during an ultrasound exam, and if your baby is much bigger or smaller than would be reasonable given your due date, she'll provide you with a new due date. (For a fun read, see our stories from parents who know when and where they did the deed that resulted in their child.).