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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 B

Explanation

Choice A rationale
Low risk: Routine monitoring. This choice is not the most appropriate. While routine monitoring is important for all patients, those receiving the MMR vaccine are not at an increased risk for Venous Thromboembolism (VTE) or Postpartum Hemorrhage (PPH) based solely on the administration of this vaccine.
Choice B rationale
Moderate to high risk: Initiate VTE prophylaxis per policy. This choice is the most appropriate. The risk of VTE and PPH should be evaluated based on the patient’s overall health status, pregnancy history, and current condition. If the patient is determined to be at moderate to high risk, VTE prophylaxis should be initiated per policy.
Choice C rationale
Moderate risk or blood loss greater than 500 mL spontaneous vaginal delivery (SVD) or greater than 1,000 mL cesarean. This choice is not the most appropriate. While these factors can contribute to the risk of VTE and PPH, they are not directly related to the administration of the MMR vaccine.
Choice D rationale
High risk: Greater than 500 mL blood loss SVD or greater than 1,000 mL cesarean, vital sign changes. This choice is not the most appropriate. While these factors can contribute to the risk of VTE and PPH, they are not directly related to the administration of the MMR vaccine.

Correct Answer is D

Explanation

Choice A rationale
Placing a pulse oximeter on the heel of a newborn can help monitor oxygen saturation levels. However, the symptoms described, such as jitteriness, hypotonicity, and a weak cry, are more indicative of hypoglycemia, a condition that would not be detected by a pulse oximeter.
Choice B rationale
Swaddling the infant in a warm blanket can help maintain body temperature, but it does not address the underlying cause of the symptoms, which are suggestive of hypoglycemia.
Choice C rationale
Documenting the findings in the record is an important part of nursing care, but it does not provide immediate intervention for the symptoms observed.
Choice D rationale
Obtaining a heel stick blood glucose level is the appropriate action given the symptoms described. Jitteriness, hypotonicity, and a weak cry can be signs of neonatal hypoglycemia. Prompt diagnosis and treatment are essential to prevent potential complications.

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