Using Nagele's rule, what is the expected delivery date for a client whose last menstrual period began on April 12?

Nagele's rule is a formula used to estimate a woman's expected due date based on the first day of her last menstrual period (LMP). To calculate the expected delivery date, you start with the first day of the last menstrual period, add one year, subtract three months, and then add seven days.

In this case, the last menstrual period began on April 12.

1. Start with the year: April 12 of the current year, say 2023.

2. Add one year: This takes us to April 12, 2024.

3. Subtract three months: This shifts the date back to January 12, 2024.

4. Finally, add seven days: January 12 plus seven days brings us to January 19, 2024.

Thus, using Nagele's rule, the expected delivery date would indeed be January 19. This method is widely used for its simplicity and reliability in calculating due dates for pregnancies.