A client who is uncertain when her lmp occurred is given an edd of april 23 after the first ultrasound. based on this information, the nurse determines the client's lmp was probably which day?

LMP or Last Menstrual Period is the first day when a woman has her last menstruation before she gets pregnant. The formula to get the Estimated Date of Delivery is to deduct 3 from the month and add 7 for the days thus to compute then estimated date of the woman's LMP is July 16.