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.
How do you want to calculate your due date? This is how most healthcare providers calculate your due date. Few people know this to the day; choose this option only if you're sure. Find out your due date with our pregnancy calculator, plus get info about your developing baby and see how big your baby is right now. Related resources. Pregnancy weeks and trimesters, explained. Your pregnancy, week by week.