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? . .
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
Administering oxygen via a facemask is an intervention that can be used if the baby shows signs of distress or if the decelerations do not improve with other interventions. However, it is not the first action that should be taken.
Choice B rationale
Turning off the oxytocin infusion could be an appropriate action if the mother is receiving oxytocin and the baby is showing signs of distress. However, it is not the first action that should be taken.
Choice C rationale
Changing the client’s position is the correct first action for variable decelerations. This can relieve potential cord compression and improve fetal oxygenation.
Choice D rationale
Assessing cervical dilation is an important part of monitoring labor progress, but it is not the first action that should be taken in response to variable decelerations.
Correct Answer is D
Explanation
Choice A rationale
While multiple gestation can cause an increase in maternal serum alpha-fetoprotein (MS-AFP) levels, it is not the most likely cause of an elevated MS-AFP level at 17 weeks.
Choice B rationale
Fetal hypoxia, or lack of oxygen to the fetus, is not typically associated with an increase in MSAFP levels.
Choice C rationale
Down syndrome is typically associated with lower, not higher, levels of MS-AFP891011.
Choice D rationale
An elevated level of MS-AFP at 17 weeks is most commonly associated with a neural tube defect. Neural tube defects are birth defects of the brain, spine, or spinal cord that occur during the first month of pregnancy.
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