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.
The online reverse due date calculator on this page will instantly estimate the date and day of the week your baby was conceived on. This free online conception calculator will determine the conception date -- including the day of the week -- based on the selected month, day, and year of your pregnancy due date.o Help You calculate ... Pregnancy due date (or birthday): Select the month, day, and year your baby is due. Note that you can also select any birthday to calculate when you or someone else was most likely conceived.