An infant who weighs 22 lbs. 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"]
- Convert the infant's weight from pounds (lb) to kilograms (kg).
Given weight = 22 lb
Conversion factor = 1 kg = 2.2 lb
Weight (kg) = (Weight in lb / 2.2 lb/kg)
= (22 / 2.2)
= 10 kg.
- Calculate the total daily dose in milligrams (mg/day).
Prescribed dose = 20 mg/kg/day
Total Daily Dose (mg/day) = Weight (kg) x Dose (mg/kg/day)
= 10 kg x 20 mg/kg/day = 200 mg/day.
- Calculate the single dose in milligrams (mg/dose).
Frequency = every 8 hours (3 doses per day)
Single Dose (mg/dose) = (Total Daily Dose / Number of doses per day)
= (200 mg / 3)
= 66.67 mg.
- Calculate the volume in milliliters (mL) to administer per dose.
Available concentration = 250 mg per 5 mL
Volume (mL/dose) = (Single Dose (mg) / Available concentration (mg)) x Available volume (mL)
= (66.67 mg / 250 mg) x 5 mL
= 1.333... mL.
- Round the answer to the nearest tenth.
= 1.3 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Prone: Prone positioning limits assessment of spinal curvature, extremity alignment, and body symmetry because the client is lying on the abdomen, which can obscure certain postural deviations.
B. Sims: Sims position is primarily used for rectal or vaginal procedures and does not provide a full view of overall body alignment, making it less ideal for assessment purposes.
C. Supine: Supine position allows the client to lie flat on the back with the body fully supported. This position provides the best view of the head, neck, spine, shoulders, hips, and extremities for a comprehensive assessment of body alignment.
D. Fowlers: Fowlers position elevates the head and torso, which may alter natural spinal alignment and obscure an accurate assessment of posture and symmetry compared with a flat, supine position.
Correct Answer is B
Explanation
A. Tolerance: Tolerance refers to the need for increasing amounts of a substance to achieve the same effect. The client is not describing a need for more alcohol, but rather a desire for it, so tolerance is not the main concept.
B. Craving: Craving is an intense desire or urge to use a substance despite awareness of negative consequences. The client’s statement about missing late-night wine reflects a psychological and physiological urge, making craving the most appropriate concept to discuss.
C. Withdrawal: Withdrawal involves physical and psychological symptoms that occur when a person stops using a substance. The client reports feeling fine physically, indicating withdrawal is not occurring.
D. Denial: Denial is a defense mechanism in which the person refuses to acknowledge a problem. The client openly admits missing alcohol, so denial is not applicable in this context.
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