Using Nägele's rule, what is the expected due date (EDC) for a woman whose last menstrual period was April 4?

To determine the estimated due date using Nägele's rule, you start with the first day of the woman's last menstrual period (LMP) and then add one year, subtract three months, and add seven days. In this case, the last menstrual period is April 4.

1. Start with the date: April 4.

2. Add one year: This brings us to April 4 of the following year.

3. Subtract three months: Changing April to January gives us January 4.

4. Finally, add seven days: January 4 plus seven days results in January 11.

Thus, using Nägele's rule, the expected due date for a woman whose last menstrual period was April 4 is January 11.