A nurse is preparing to administer digoxin 12 mcg/kg/day PO to divide equally every 12 hr to a school-age child who weighs 66 lb. Available is digoxin elixir 0.05 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["3.6"]
To calculate the dosage of digoxin for the child, first convert the child's weight from pounds to kilograms, knowing that 1 kilogram equals 2.2 pounds. The child weighs 66 pounds, which is approximately 30 kilograms (66 ÷ 2.2). The prescribed dose is 12 micrograms per kilogram per day, which equals 360 micrograms per day (12 mcg × 30 kg). Since the dose is divided every 12 hours, the child should receive 180 micrograms every 12 hours. The digoxin elixir is available at a concentration of 0.05 mg/mL, which is the same as 50 micrograms per milliliter. To find out how many milliliters to administer per dose, divide the dose in micrograms by the concentration: 180 mcg ÷ 50 mcg/mL equals 3.6 mL.
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Naxlex Comprehensive Predictor Exams
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Correct Answer is C
Explanation
A. A decreased respiratory rate is not a typical sign of pain in an infant and may indicate other issues.
B. Increased formula consumption is not a specific indicator of pain and could be related to other factors like hunger or comfort.
C. Increased crying episodes are a common sign of pain in infants, as they often use crying to express discomfort or distress.
D. Decreased heart rate is not typically associated with pain and may indicate other conditions.
Correct Answer is A
Explanation
A. Puberty might be considered delayed if there are no scrotal changes by the age of 11 years, as testicular enlargement is one of the earliest signs of puberty in boys.
B. Growth spurts typically occur early in puberty, not towards the end.
C. Changes in voice occur later in puberty, not at the beginning.
D. Gynecomastia (breast tissue development) commonly occurs during early puberty rather than late puberty and is usually temporary.
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