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
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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.
Correct Answer is A
Explanation
Choice A rationale
Disseminated intravascular coagulation (DIC) is a serious complication that can occur after severe postpartum hemorrhage. It involves an abnormal activation of the clotting cascade, leading to the formation of small blood clots in the vessels and can result in organ damage.
Choice B rationale
Postpartum psychosis is a rare psychiatric emergency that typically presents with delirium and mood disturbances, and it is not directly related to postpartum hemorrhage.
Choice C rationale
While hard, painful uterine afterpains can occur after childbirth, they are not the highest priority for assessment in a client who experienced a severe postpartum hemorrhage.
Choice D rationale
Placenta accreta is a condition where the placenta attaches too deeply into the uterine wall. However, it is typically identified during pregnancy or at the time of delivery, not after a postpartum hemorrhage.
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