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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. While heparin and warfarin both work as anticoagulants, IV heparin is not typically used to increase the effects of warfarin or decrease the length of hospital stay. Heparin is often administered initially to rapidly achieve therapeutic anticoagulation while waiting for warfarin to reach its full therapeutic effect, but it is not intended to directly enhance the action of warfarin.
B. This statement is accurate and provides a clear explanation to the client. Warfarin, an oral anticoagulant, takes several days to achieve a therapeutic level in the bloodstream and to exert its anticoagulant effect. During this time, IV heparin is continued to prevent clot formation until the therapeutic level of warfarin is reached.
C. While both heparin and warfarin work to prevent blood clots, they do not directly dissolve existing clots. Rather, they prevent the formation of new clots and the growth of existing ones. This explanation does not fully address the client's question regarding why both medications are necessary.
D. Discontinuing IV heparin prematurely without reaching a therapeutic level of warfarin could increase the risk of thrombus formation or embolization. Therefore, discontinuing IV heparin should be done under the guidance of the provider based on the client's INR levels and the target therapeutic range for warfarin.
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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