An infant who weighs 22 lb receives a prescription for amoxicillin 20 mg/kg/day PO in divided doses every 8 hours. The bottle is labeled, "Amoxicillin for Oral Suspension, USP 250 mg per 5 mL." How many mL should the nurse administer with each dose? (Enter numerical value only. If rounding is necessary, round to the nearest tenth.)
The Correct Answer is ["1.3"]
To calculate the dosage of amoxicillin for the infant, first convert the weight from pounds to kilograms, knowing that 1 kilogram equals 2.2 pounds. The infant weighs 22 pounds, which is equivalent to 10 kilograms (22 lb / 2.2 lb/kg). The prescription is for 20 mg/kg/day, so the total daily dosage is 200 mg (10 kg * 20 mg/kg). This total daily dosage is divided into three doses, as it is to be administered every 8 hours, resulting in
66.7 mg per dose (200 mg / 3). The medication is supplied as 250 mg per 5 mL, so to find out how many mL per dose, set up a proportion: 250 mg is to 5 mL as 66.7 mg is to X mL. Solving for X gives us 1.334 mL (66.7 mg * 5 mL / 250 mg), which rounds to 1.3 mL when rounded to the nearest tenth.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["D","E"]
Explanation
A. Bending from the waist to pick up trash can cause imbalance and strain; it is safer to bend at the knees.
B. Leaning forward to pull a pan from a high shelf can lead to loss of balance; using a step stool is safer.
C. Locking the knees can lead to loss of balance and is not a recommended posture.
D. Widening the stance provides a stable base and helps maintain balance while working.
E. Bringing a heavy can close to the body before lifting uses proper body mechanics, reducing the risk of strain and promoting balance.
Correct Answer is A
Explanation
A. An aPTT that is 2 times the control value indicates that the heparin is effectively anticoagulating the blood, which is a desired outcome in managing MI to prevent clot formation.
B. S3 heart sounds can indicate heart failure and are not a sign of a satisfactory response to MI treatment.
C. Wide Q waves indicate a previous infarction but do not reflect the immediate effectiveness of the treatment.
D. A positive guaiac test indicates gastrointestinal bleeding, which is a potential complication rather than a satisfactory response.
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