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.
DATE_IN_FUTURE Calculate a date N days in the future. RP_CALC_DATE_IN_INTERVAL Add days/months to a date. RP_CALC_DATE_IN_INTERVAL Add/subtract years/months/days from a date. SD_DATETIME_DIFFERENCE Give the difference in Days and Time for 2 dates. MONTH_PLUS_DETERMINE Add or subtract months from a date.To subtract a month, enter a negative value for the âmonthsâ parameter.ATE_IN_FUTURE Calculate a date N days in the future. RP_CALC_DATE_IN_INTERVAL Add days/months to a date. RP_CALC_DATE_IN_INTERVAL Add/subtract years/months/days from a date. SD_DATETIME_DIFFERENCE Give the difference in Days and Time for 2 dates. MONTH_PLUS_DETERMINE Add or subtract months from a date.