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 ["0.6"]
Explanation
Calculation:
- Convert the client's weight from pounds (lb) to kilograms (kg).
The client's weight is 154 lb.
Client weight (kg) = 154lb/2.2lb/kg
= 70kg.
- Calculate the total dose to be administered (units).
The ordered dose is 200 units/kg.
Total dose (units) = 200units/kg×70kg
= 14,000units.
- Calculate the volume to administer in milliliters (mL).
Available concentration is 25,000units/mL.
Volume (mL) = Totaldose(units)/Availableconcentration(units/mL)
= 14,000units/25,000units/mL
= 0.56mL.
- Round the answer to the nearest tenth.
= 0.6mL.
Correct Answer is {"dropdown-group-1":"A"}
Explanation
A. Opioid analgesics: The client reports severe, sharp, stabbing pain with breathing and movement due to multiple rib fractures. Opioids are effective for managing moderate to severe pain, allowing the client to breathe deeply, cough effectively, and reduce the risk of complications such as atelectasis or pneumonia.
B. Antibiotics: There is no evidence of infection in this client’s presentation. Antibiotics are not indicated for pain management related to rib fractures or atelectasis without infection.
C. Antacids: Antacids are used to treat gastrointestinal upset or acid-related conditions. They do not address musculoskeletal pain or improve respiratory function in rib fractures.
D. Bronchodilators: Bronchodilators relieve airway constriction in conditions like asthma or COPD. This client’s shallow breathing is due to pain, not bronchospasm, so bronchodilators are not appropriate.
E. Antihypertensives: While the client has slightly elevated blood pressure, antihypertensives do not relieve pain or improve respiratory effort, making them irrelevant for the acute management of rib fracture–related symptoms.
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