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 B
Explanation
Choice A rationale
If the child is sleeping now and is difficult to wake, this could be a sign of worsening respiratory status. Children with respiratory distress often have difficulty sleeping due to discomfort and difficulty breathing. If the child is now sleeping and difficult to wake, this could indicate a decrease in oxygen levels, leading to lethargy and decreased responsiveness. This would require immediate attention.
Choice B rationale
The vital signs provided indicate a potentially serious situation. A heart rate of 130 beats/minute is high for a 3-year-old child, indicating that the heart is working harder to pump blood. A respiratory rate of 15 breaths/minute is on the lower end of normal for a 3-year-old, which could indicate that the child is not getting enough oxygen. An oxygen saturation of 66% on a 5L face mask is dangerously low, indicating severe hypoxia. A temperature of 102.8° F(39.3° C) axillary indicates a fever, which could be a sign of infection. A blood pressure of 92/48 mm Hg is within normal range for a 3-year-old.
Choice C rationale
If the child is active and playing with toys, this could indicate that his respiratory status is not worsening. Children who are experiencing respiratory distress often have difficulty engaging in normal activities due to discomfort and shortness of breath. If the child is able to play normally, this could indicate that he is getting enough oxygen and his condition is stable.
Choice D rationale
If the child’s breathing has returned to normal, this could indicate that his respiratory status is improving. However, it’s important to continue monitoring the child closely, as respiratory conditions can change rapidly, especially in young children.
Correct Answer is ["-"]
Explanation
Step 1: The patient’s vital signs are as follows: Temperature 100.4° F (38° C) orally, Heart rate 86 beats/minute, Respiratory rate 16 breaths/minute, Blood pressure 102/12 mm Hg, Pain 4 on a 0 to 10 pain scale.
Step 2: She was assisted to the bathroom where she voided 150 mL of clear yellow urine. Lochia rubra is moderate with small clots, no foul odor noted. The fundus is firm at the umbilicus. The episiotomy edges are well approximated, with no redness, edema, drainage, or ecchymosis. There is no pain, redness, or swelling in the calves.
Step 3: A 1,000 mL bag of lactated Ringer’s solution containing 10 units of oxytocin is infusing via an 18-gauge peripheral IV in the left forearm at 125 mL per hour, with 500 mL remaining in the bag. The IV is patent, without redness or swelling, and can be discontinued when this bag’s infusion is complete.
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