A client who is a primipara is completing admission forms at her first obstetrical clinic visit.
Which information shared is needed by the practical nurse (PN) to accurately assign an estimated date of birth (EDB)?
Last day of last normal menstrual period.
Average duration of menstrual periods.
Average frequency of menstrual periods.
First day of last normal menstrual period.
The Correct Answer is D
Choice A rationale
The last day of the last normal menstrual period would not accurately establish the estimated date of birth because calculations for gestational age commence from the onset of the cycle. Conception typically occurs around two weeks after the first day, so using the last day would lead to an underestimation of gestational age.
Choice B rationale
The average duration of menstrual periods, while providing insight into cycle regularity, does not offer the precise temporal marker needed for gestational age calculation. Nägele's rule specifically requires the first day of the last menstrual period, not the length of bleeding, to accurately estimate the delivery date.
Choice C rationale
The average frequency of menstrual periods, though indicating cycle regularity or irregularity, is not the specific data point required for estimating the delivery date. Nägele's rule relies on a fixed reference point, which is the beginning of the last menstrual cycle, not the intervals between cycles.
Choice D rationale
The first day of the last normal menstrual period (LMP) is crucial for accurately assigning an estimated date of birth (EDB) using Nägele's rule. This calculation adds 7 days to the LMP and subtracts 3 months, providing a standardized method for determining gestational age and anticipated delivery.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
Daily washing with mild soap and warm water helps remove excess sebum, dead skin cells, and bacteria from the skin surface, which are primary contributors to acne lesion formation. This non-irritating approach prevents further inflammation and maintains skin barrier integrity without triggering compensatory oil production often seen with harsh cleansers.
Choice B rationale
While a dermatologist can provide advanced therapies, the initial approach to acne management often involves lifestyle modifications and over-the-counter treatments. Referring directly to a dermatologist for long-term therapy without first attempting conservative measures may be an overstep for initial PN recommendations, as many mild cases respond to basic hygiene.
Choice C rationale
Scientific evidence does not consistently support a direct causal link between dietary factors like chocolate, carbonated drinks, or fried foods and the exacerbation of acne. Acne development is primarily influenced by hormonal factors, sebum production, bacterial proliferation (Propionibacterium acnes), and follicular hyperkeratinization, not specific food consumption.
Choice D rationale
Manual expression of blackheads can push follicular contents deeper, leading to rupture of the follicle wall, increased inflammation, and potential scarring. Exfoliating scrubs can also irritate inflamed skin, disrupt the skin barrier, and worsen acne, making this an unscientific and potentially harmful recommendation.
Correct Answer is ["0.7"]
Explanation
Step 1 is: Convert pounds to kilograms. 58 pounds ÷ 2.2 pounds/kg = 26.36 kg.
Step 2 is: Calculate the total milligrams per dose. 1 mg/kg × 26.36 kg = 26.36 mg.
Step 3 is: Calculate the volume to administer per dose. 26.36 mg ÷ (40 mg/mL) = 0.659 mL.
Step 4 is: Round to the nearest tenth. 0.7 mL.
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