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A child who weighs 55 pounds receives a prescription for isoniazid 10 mg/kg/day by mouth (PO) once a day.

The bottle is labeled, “Isoniazid Oral Solution, USP 50 mg per 5 mL.”. How many mL should the nurse administer? . .
Answer and Explanation

The Correct Answer is ["25"]

Answer and explanation

Step 1 is to convert the child’s weight from pounds to kilograms since the dosage is prescribed in mg/kg. We know that 1 kg is approximately 2.2 lbs. So, the child’s weight in kg is 55 lbs ÷ 2.2 = 25 kg (rounded to the nearest whole number for simplicity).

Step 2 is to calculate the total daily dosage. The prescription is for isoniazid 10 mg/kg/day. So, the total daily dosage in mg is 10 mg/kg/day × 25 kg = 250 mg/day.

Step 3 is to calculate the volume of the oral solution to administer. The bottle is labeled, “Isoniazid Oral Solution, USP 50 mg per 5 mL.”. So, the volume in mL to administer is (250 mg/day ÷ 50 mg) × 5 mL = 25 mL. Therefore, the nurse should administer 25 mL of the Isoniazid Oral Solution, USP 50 mg per 5 mL, once a day.


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Related Questions

Correct Answer is ["0.72"]

Explanation

Step 1 is to calculate the total amount of oxytocin in the IV bag. This is done by multiplying the total volume of the bag by the concentration of oxytocin. In this case, the bag contains 5 units of oxytocin in 500 mL, so the concentration is 5 units ÷ 500 mL = 0.01 units/mL.

Step 2 is to convert the prescribed dose from milliunits/min to units/hour. There are 1000 milliunits in a unit and 60 minutes in an hour, so 12 milliunits/min = 12 ÷ 1000 units/min = 0.012 units/min. Then, 0.012 units/min × 60 min/hour = 0.72 units/hour.

Step 3 is to calculate the infusion rate in mL/hour. This is done by dividing the prescribed dose in units/hour by the concentration of oxytocin in units/mL. So, 0.72 units/hour ÷ 0.01 units/mL = 72 mL/hour. Therefore, the nurse should set the infusion pump to 72 mL/hour.

Correct Answer is {"dropdown-group-1":"C"}

Explanation

A. Croup

  • Rationale: Croup is a condition characterized by a barking cough and stridor (a high-pitched breathing sound), often accompanied by noisy breathing. It is a common cause of respiratory distress in children and can present with symptoms similar to those described.

B. Asthma

  • Rationale: Asthma can present in young children with symptoms such as wheezing, shortness of breath, and rapid breathing. However, diagnosing asthma in very young children can be challenging due to the variability of symptoms and the overlap with other respiratory conditions.

C. Bronchiolitis

  • Rationale: The child’s symptoms of “fast and noisy breathing” could be indicative of bronchiolitis, a common lung infection in young children. This condition is often preceded by symptoms of a common cold, such as sneezing and a runny nose, which the child had the previous week.

D. Foreign Body Aspiration

  • Rationale: Foreign body aspiration should be considered in young children who present with sudden onset of respiratory symptoms, including noisy or rapid breathing, particularly if there is a history of coughing or choking.

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