In a fully developed term infant, at age 6 weeks the nurse practitioner should expect the triangular-shaped posterior fontanel to be:
closed.
open.
pulsatile.
open and pulsatile.
The Correct Answer is A
Rationale:
A. The posterior fontanel, which is triangular in shape, typically closes by 6–8 weeks of age in a full-term infant. Closure at this age is considered normal and indicates appropriate cranial development.
B. While some posterior fontanels may remain slightly open beyond 6 weeks, persistent patency is uncommon and may warrant evaluation.
C. A pulsatile posterior fontanel is more characteristic of the anterior fontanel in a normal infant and is not typical for the posterior fontanel.
D. An open and pulsatile posterior fontanel at 6 weeks is unusual and may suggest delayed closure or underlying pathology.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Rationale:
A. Oral corticosteroids are generally reserved for severe, widespread, or refractory atopic dermatitis due to potential systemic side effects, and topical antihistamines are not routinely recommended because of limited efficacy and risk of skin reactions.
B. A low-potency topical steroid applied three times daily helps reduce inflammation in mild to moderate atopic dermatitis while minimizing risk of skin atrophy. An oral antihistamine at bedtime can help control itching and improve sleep, addressing the patient’s restlessness at night.
C. Medium-potency topical steroids are usually unnecessary for mild erythematous lesions without excoriation and increase the risk of adverse effects in toddlers. Topical antihistamines are generally avoided.
D. Topical antibiotics are indicated only if there is evidence of secondary bacterial infection. Routine use in non-infected atopic dermatitis is not recommended. Oral antihistamines three times daily are not standard; bedtime dosing is preferred to reduce daytime sedation.
Correct Answer is A
Explanation
Rationale:
A. Uncomplicated mononucleosis is generally self-limiting, and management focuses on symptom relief. Acetaminophen (or ibuprofen) can be used to manage fever and sore throat.
B. Corticosteroids are reserved for severe complications, such as significant tonsillar hypertrophy causing airway obstruction, and are not indicated for uncomplicated cases.
C. Adolescents with mononucleosis should avoid contact sports or strenuous activity for at least 3–4 weeks, as splenomegaly increases the risk of splenic rupture.
D. Antibiotics like amoxicillin are not indicated and may cause rash in patients with Epstein-Barr virus infection, a hallmark of mononucleosis.
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