The first and most obvious sign of precocious puberty in a 7-year-old female is:
pubarche.
leukorrhea.
rapid onset acne.
breast enlargement.
The Correct Answer is D
Rationale:
A. Pubarche (development of pubic hair) may occur, but it is not usually the first sign in girls.
B. Leukorrhea (vaginal discharge) can appear later but is not the initial sign of puberty.
C. Rapid onset acne may accompany puberty but is not the earliest or most obvious sign.
D. Breast enlargement (thelarche) is typically the first and most noticeable sign of precocious puberty in girls.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Rationale:
A. In a healthy 10-year-old, a heart rate of 60 beats per minute at rest is concerning because the normal resting heart rate for this age group ranges from approximately 70–120 bpm. A heart rate below 70 bpm (bradycardia) may indicate an underlying cardiac conduction issue or other pathology, particularly if symptomatic.
B. 73 bpm is within the normal range for a 10-year-old at rest.
C. 100 bpm is normal and can be expected depending on activity, anxiety, or mild stress.
D. 120 bpm is at the upper limit of normal for a 10-year-old and may be appropriate depending on recent activity or emotional state.
Correct Answer is C
Explanation
Rationale:
A. Radioactive iodine is generally reserved for older children or adolescents when medical therapy fails, due to potential long-term effects on growth and fertility.
B. Propylthiouracil (PTU) is avoided in children as first-line therapy because of the risk of severe liver toxicity.
C. Methimazole (Tapazole) is the preferred initial treatment for pediatric hyperthyroidism, as it effectively controls thyroid hormone production with a safer side effect profile.
D. Levothyroxine (Synthroid) is used to treat hypothyroidism, not hyperthyroidism.
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