A nurse in a prenatal clinic is caring for a client who asks what her estimated date of delivery will be if her last menstrual period was May 4, 2022.
Which of the following is the appropriate response by the nurse?

Choice A rationale

The symptoms described do not typically align with conditions that would be treated with Prescription A. Prescription A might be used for a different set of symptoms or conditions.

Choice B rationale

The presence of small pinpoint open vesicles and pustules on the labia majora with clear drainage, along with a thick, mucopurulent vaginal discharge, could indicate a sexually transmitted infection or other type of infection. Prescription B might be an antibiotic or antiviral medication to treat the suspected infection.

Choice C rationale

The symptoms described do not typically align with conditions that would be treated with Prescription C. Prescription C might be used for a different set of symptoms or conditions.

Choice D rationale

The symptoms described do not typically align with conditions that would be treated with Prescription D. Prescription D might be used for a different set of symptoms or conditions.

Based on your last menstrual period (LMP) of May 4, 2022, your estimated date of delivery (EDD) would be around February 11, 2023."

Rationale:

• Calculating the Estimated Date of Delivery (EDD): The EDD can be calculated using Naegele's Rule, which is a standard method used to estimate the due date. The rule involves subtracting three months from the first day of the last menstrual period (LMP), adding seven days, and adjusting the year if necessary.

• Application of Naegele’s Rule:

  • Start with the first day of the LMP: May 4, 2022.
  • Subtract three months: February 4, 2022.
  • Add seven days: February 11, 2022.
  • Since the year needs to be adjusted, the EDD is February 11, 2023.

Key Points:

• Naegele’s Rule is commonly used but assumes a 28-day menstrual cycle and ovulation on the 14th day. Variations in cycle length can affect the accuracy.