Tachycardia in an infant between birth and age 1 month is a heart rate:
between 90 and 110 beats per minute.
between 115 and 140 beats per minute.
between 150 and 170 beats per minute,
greater than 180 beats per minute.
The Correct Answer is D
Rationale:
A. A heart rate of 90–110 beats per minute is below the normal range for a newborn and would be considered bradycardia.
B. 115–140 beats per minute falls within the normal resting range for infants, especially when asleep.
C. 150–170 beats per minute can be normal during activity or crying in a newborn.
D. Tachycardia in infants younger than 1 month is defined as a heart rate greater than 180 beats per minute at rest. Persistent tachycardia may indicate underlying conditions such as infection, dehydration, anemia, or cardiac disorders and warrants further evaluation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Rationale:
A. Urinalysis can detect hematuria, proteinuria, or signs of urinary tract infection, which may indicate renal causes of pediatric hypertension, making it a helpful test.
B. Complete blood count (CBC) may reveal anemia or other hematologic abnormalities that could contribute indirectly to hypertension or help identify underlying systemic conditions.
C. Renal ultrasound is essential for evaluating structural kidney abnormalities, which are a common cause of hypertension in young children.
D. Liver enzymes (AST, ALT) are least helpful in determining the cause of hypertension in a 4-year-old, as liver disease is rarely a primary contributor to pediatric hypertension at this age.
Correct Answer is D
Explanation
Rationale:
A. Wearing lap and shoulder belts is essential for all passengers, including children, to reduce injury risk in car accidents.
B. Bicycle helmets significantly decrease the risk of head injury and should always be worn by children while riding.
C. Children under 13 years of age are generally safer in the backseat than the front seat due to airbag risks.
D. Using a multipurpose lighter to ignite fireworks is unsafe and should never be recommended to children. Fireworks should only be handled by adults, and children should be taught not to light fireworks themselves to prevent burns, eye injuries, or accidental fires.
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