A nurse is caring for a 1-month-old infant who weighs 3500 g and is prescribed a dose of cephazolin 50 mg/kg by intermittent IV bolus three times daily. How many mg should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero)
The Correct Answer is ["175"]
We are asked to calculate the dosage of cephazolin for a 1-month-old infant based on their weight.
Steps to solve: 1. Identify the given values:
- Dose per kg = 50 mg/kg
- Weight of the infant = 3500 g
2. Set up the formula: Dosage (mg) = Dose per kg (mg/kg) × Weight (kg)
3. Since the weight is given in grams, convert it to kilograms: 3500 g / 1000 g/kg = 3.5 kg
4. Substitute the known values into the formula and calculate: Dosage (mg) = 50 mg/kg × 3.5 kg Dosage (mg) = 175 mg
5. Round the answer to the nearest tenth: Dosage (mg) = 175.0 mg
The nurse should administer 175.0 mg of cephazolin per dose.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Secure the restraints to the lowest bar of the side rail:
This is incorrect. Restraints should not be secured to the side rails of the bed because the client may injure themselves by attempting to climb over the side rail or if the bed adjusts, it can cause excessive pressure on the restrained limb.
B. Ensure four fingers under the restraints to prevent constriction:
This is incorrect. The nurse should be able to slide two fingers under the restraint to ensure it is not too tight, rather than four fingers. Restraining too loosely may allow the client to slip out, while restraining too tightly can cause tissue damage or compromise circulation.
C. Secure the restraints using a quick-release tie:
This is the correct action. Restraints should always have quick-release ties to allow for quick removal in case of an emergency or if the client needs to be repositioned or assisted. Velcro or buckle restraints with quick-release mechanisms are commonly used to ensure easy removal.
D. Anticipate removing the restraints every 4 hr:
While it's essential to regularly assess the need for continued restraint use and ensure restraints are not overly restrictive, there's no set time interval for removing restraints. Restraints should be removed as soon as they are no longer necessary to ensure the client's safety and comfort.
Correct Answer is ["175"]
Explanation
We are asked to calculate the dosage of cephazolin for a 1-month-old infant based on their weight.
Steps to solve: 1. Identify the given values:
- Dose per kg = 50 mg/kg
- Weight of the infant = 3500 g
2. Set up the formula: Dosage (mg) = Dose per kg (mg/kg) × Weight (kg)
3. Since the weight is given in grams, convert it to kilograms: 3500 g / 1000 g/kg = 3.5 kg
4. Substitute the known values into the formula and calculate: Dosage (mg) = 50 mg/kg × 3.5 kg Dosage (mg) = 175 mg
5. Round the answer to the nearest tenth: Dosage (mg) = 175.0 mg
The nurse should administer 175.0 mg of cephazolin per dose.
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