A nurse is preparing to administer cephalexin 50 mg/kg/day in divided doses every 8 hours to a child who weighs 33 lb. The amount available is cephalexin oral suspension 250 mg/5 mL.
How many mL should the nurse administer per dose?
(Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.) .
The Correct Answer is ["5"]
Step 1 is: Convert the child's weight from pounds to kilograms: 33 lb ÷ 2.2 = 15 kg.
Step 2 is: Calculate the total daily dose: 50 mg/kg/day × 15 kg = 750 mg/day.
Step 3 is: Calculate the dose per administration (every 8 hours, which is 3 times a day): 750 mg/day ÷ 3 = 250 mg/dose.
Step 4 is: Determine the volume of medication to administer: 250 mg ÷ (250 mg/5 mL) = 5 mL.
Final calculated answer: 5 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
Collecting vital signs every 2 hours may not provide comfort and support to the child or family. Instead, it may contribute to unnecessary stress and anxiety for the child and family during this sensitive time. It is important to balance medical assessments with compassionate care.
Choice B rationale
Avoiding discussions about death may not be helpful for the child or family. Children, even those who are terminally ill, have the right to receive honest and age-appropriate information about their condition. Open communication helps them process their feelings and can provide a sense of closure.
Choice C rationale
Encouraging the family to involve siblings in caring for the terminally ill child can provide emotional support to both the ill child and the siblings. It fosters a sense of togetherness and helps siblings cope with the situation. It also allows siblings to express their love and support, which can be therapeutic for the entire family.
Choice D rationale
Performing passive range of motion to the child's extremities every 4 hours may be beneficial in maintaining joint flexibility and preventing contractures. However, it is not the primary focus in providing compassionate end-of-life care. Comfort measures and emotional support are more critical during this time.
Correct Answer is A
Explanation
Choice A rationale
Lowering the temperature of the room can help provide comfort to the child and reduce fever symptoms in a non-invasive way.
Choice B rationale
Placing a child in an ice bath is not recommended as it can cause shivering and increase metabolic demand, which might worsen the condition.
Choice C rationale
Giving 500 mg of acetaminophen every 2 hours is not appropriate for a 2-year-old child due to potential overdose risks. The standard dosing interval is usually every 4-6 hours.
Choice D rationale
Administering aspirin to children is contraindicated due to the risk of Reye's syndrome, a serious condition that affects the liver and brain.
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