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Which of the following heart rates would be of concern in an otherwise healthy 10-year-old patient?

A.

60 beats per minute

B.

73 beats per minute

C.

100 beats per minute

D.

120 beats per minute

Answer and Explanation

The Correct Answer is A

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.


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Related Questions

Correct Answer is B

Explanation

Rationale:
A. Caput succedaneum is edema of the scalp that crosses suture lines and results from pressure on the presenting part during delivery, not a true hemorrhage.
B. Cephalohematoma is a subperiosteal hemorrhage, meaning blood collects between the periosteum and the skull bone. It is typically firm, well-defined, and does not cross suture lines. It may appear several hours after birth and usually resolves spontaneously over weeks to months.
C. Subdural hemorrhage involves bleeding beneath the dura mater, often associated with trauma or birth complications, but it is deeper than a cephalohematoma and may cause neurological signs.
D. Subarachnoid hemorrhage occurs in the space between the arachnoid and pia mater; it is not limited to the periosteum and is rare in uncomplicated deliveries.

Correct Answer is D

Explanation

Rationale:
A. Referral to a specialist is not immediately necessary when physical development is normal and there are no other concerning findings.
B. Measuring FSH and LH is indicated if there are signs of delayed puberty or abnormal secondary sexual characteristics, which are absent in this case.
C. hCG testing is used to assess for pregnancy, which is not relevant in a 14-year-old with normal pubertal development and no history suggesting pregnancy.
D. Reassurance and education are appropriate, as menarche typically occurs around Tanner stage 3–4, and variation in timing is normal. Most healthy adolescents who have normal physical development and no other symptoms will begin menstruating by age 15.

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