An infant who weighs 22 pounds receives a prescription for amoxicillin 20 mg/kg/day by mouth 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"]
1. Convert the infant's weight from pounds to kilograms. We can use the conversion factor 1 kg
= 2.2 lb. So, 22 lb x (1 kg / 2.2 lb) = 10 kg.
2. Calculate the total daily dose of amoxicillin for the infant. We can use the formula D = d x W, where D is the total daily dose, d is the dose per kg per day, and W is the weight in kg. So, D = 20 mg x 10 kg = 200 mg.
3. Calculate the single dose of amoxicillin for the infant. We can divide the total daily dose by the number of doses per day. Since the prescription is for every 8 hours, there are 3 doses per day. So, 200 mg / 3 = 66.67 mg.
4. Calculate the volume of amoxicillin suspension for the single dose. We can use the ratio of the concentration of the suspension, which is 250 mg per 5 mL. So, 66.67 mg x (5 mL / 250 mg) =
1.33 mL.
5. Round the volume to the nearest tenth= 1.3 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A.Tingling on the tongue or lips is an early sign of an allergic reaction to the contrast dye used during an intravenous pyelogram. This type of reaction can quickly progress to more severe symptoms, such as difficulty breathing and anaphylaxis, so it is crucial to recognize and respond to it promptly.
B. Episodes of shivering: Shivering is not typically an early sign of an allergic reaction to contrast dye. It might indicate a reaction to temperature or anxiety but is not as immediately concerning as symptoms of an allergic reaction.
C. Salty taste in the mouth: A salty or metallic taste is a common and benign side effect of the contrast dye and is not indicative of an adverse reaction.
D. Difficulty breathing: Difficulty breathing is a severe and later sign of an allergic reaction. By the time this symptom appears, the reaction has progressed and immediate intervention is necessary.
Correct Answer is ["1000"]
Explanation
rate (mL/h) = volume (mL) / time (h).
In this case, the volume is 500 mL and the time is 0.5 h (30 minutes).
Plugging these values into the formula, we get: rate (mL/h) = 500 mL / 0.5 h = 1000 mL/h. Therefore, the nurse should set the infusion pump to 1000 mL/hour.
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