A pregnant woman reports that the first day of her Last Menstrual Period was 27 August. According to Naegele's rule, what is her Estimated Date of Delivery?

1. A

   3 May

2. B

   4 May

3. C

   3 April

4. D

   3 June

Appeared in: NORCET-11 Prelims

Explanation

• Naegele's rule: Add 7 days to LMP, subtract 3 months, add 1 year if needed.
• LMP 27 August + 7 days = 3 September.
• 3 September - 3 months = 3 June.
• Add 1 year if calculation crosses into next year.
• EDD is 3 June for LMP 27 August.

Why Other Options Were Wrong

• Option A: 3 May is incorrect because subtracting 3 months from September gives June, not May.
• Option B: 4 May is incorrect as the calculation does not result in May for an LMP of 27 August.
• Option C: 3 April is incorrect because subtracting 3 months from September gives June, not April.

Related Visual

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Calculation of Estimated Date of Delivery (EDD) using Naegele's rule as background academic context rather than a clinical decision trigger.
• Accurate EDD is essential for monitoring fetal growth, scheduling antenatal visits, and planning delivery.
• Miscalculation can lead to inappropriate interventions or missed complications.
• What if? If the LMP was 27 December, the EDD would be 3 October (next year), showing how the rule adapts to different months.

How to Approach the Question

• Identify the date of the LMP as the starting point.
• Recall the steps of Naegele's rule: add 7 days, subtract 3 months, add 1 year if needed.
• Perform each step carefully, checking the month and year transitions.
• Match your calculated date to the options provided.
• Eliminate distractors that do not fit the calculation.

Concept Tested & Keywords

• Concept Tested: Calculation of Estimated Date of Delivery (EDD) using Naegele's rule
• Stem keywords: pregnant woman, Last Menstrual Period, 27 August, Estimated Date of Delivery, Naegele's rule
• Lead-in keywords: Estimated Date of Delivery, according to Naegele's rule
• Clinical cues: LMP date is 27 August, which is critical for calculation

Question ID

QGsFLNpNMN1FtEksOs7b3M

Copy ID

Reference Book

E6 Comprehensive Textbook of Community Health Nursing for BSc Nursing Students Part 2 — Subpart A (pp 1-275 of 550) p. 195-197

E6 Obstetrics Williams p. 19-35