The physician ordered cephalexin 4mg/kg PO every six hours. The available of medication is cephalexin 250mg/5ml. The client weighs 245 pounds. How many milliliters is to be administered with each dose every six hours? (Round to the nearest tenth)
The Correct Answer is ["8.9"]
Calculation:
- Convert the client's weight from pounds (lb) to kilograms (kg).
Weight in kg = 245 lb / 2.2 lb/kg
= 111.3636 kg.
- Calculate the desired dose per administration in milligrams (mg).
Desired dose per administration (mg) = Desired dose (mg/kg) × Weight (kg)
= 4 mg/kg × 111.3636 kg
= 445.4544 mg.
Available concentration of the medication = 250 mg / 5 mL.
- Calculate the volume in milliliters (mL) to administer per dose.
Volume (mL) = Desired dose per administration (mg) / (Available concentration (mg) / Available volume (mL))
= 445.4544 mg / (250 mg / 5 mL)
= 445.4544 mg / 50 mg/mL
= 8.909088 mL.
- Round the answer to the nearest tenth.
= 8.9 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. 76-year-old female who drinks alcohol daily and is 101 lbs (45 kg) underweight: While alcohol consumption is a risk factor for some cancers, it is not a primary risk factor for renal cancer. Being underweight may be concerning but it does not significantly increase the risk for renal cancer.
B. 61-year-old male who smokes cigarettes and restores old buildings: Smoking is a major risk factor for renal cancer, and occupational exposure to asbestos (common in the restoration of old buildings) increases the risk as well. This combination makes this individual the highest-risk candidate for renal cancer.
C. 53-year-old male who had a urinary tract infection and has type 1 diabetes: While diabetes is a risk factor for kidney disease, it is not a major risk factor for renal cancer. UTIs are more commonly linked to urinary tract issues but do not significantly increase renal cancer risk.
D. 42-year-old female who is addicted to heroin and has hepatitis B: While hepatitis B can lead to liver cancer, it is not a significant risk factor for renal cancer. Heroin use may lead to kidney issues, but it is not strongly linked to renal cancer specifically.
Correct Answer is A
Explanation
A. Drink at least 3000 ml of fluid per day: Multiple myeloma can lead to kidney damage, and increased fluid intake helps to prevent dehydration and kidney complications, such as renal failure. Staying well-hydrated is essential to help flush out excess calcium from the bloodstream and support kidney function.
B. Keep lower extremities elevated: Elevating lower extremities may be helpful for conditions involving fluid retention or edema, it is not specifically relevant for multiple myeloma. The priority is managing fluid balance and preventing kidney complications.
C. Notify physician for weight gain of 3-5 lbs (1.5-2.2 kg) in a week: While significant weight gain could indicate fluid retention or complications, it is more important for patients with multiple myeloma to monitor for signs of kidney issues or hypercalcemia.
D. Perform weight bearing exercises three times per day: Weight-bearing exercises can help with bone health, but due to the risk of bone fractures and weakened bones in multiple myeloma, patients are typically advised to avoid high-impact or strenuous activities.
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