The doctor orders medication S2.5 mg/kg/day in two divided doses. Medication S is supplied 40mg/mL. The patient weighs 121 lbs. What will 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 ["1.7"]
Let's calculate the dosage step-by-step:
1. Convert pounds to kilograms:
121 lbs/ 2.20462 kg = 54.9 kg
2. Calculate the total daily dosage:
2.5 mg/kg/day x 54.9 kg = 137.25 mg/day
3. Calculate the dosage per dose (divided equally twice daily):
137.33 mg/day / 2 doses ≈ 68.625 mg/dose
4. Determine the concentration of the medication:
40 mg/mL
5. Calculate the volume needed:
68.67 mg / 40 mg/mL = 1.7 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["1"]
Explanation
Let's calculate the dosage step-by-step:
1. Convert pounds to kilograms:
220 lbs/2.20462 kg = 99.8 kg
2. Calculate the total dosage:
100 units/kg x 99.8 kg = 9980units
3. Determine the concentration of the medication:
10000 units/mL
4. Calculate the volume needed:
9980 units / 10000 units/mL = 1 mL
Correct Answer is ["2525"]
Explanation
Here's the calculation of the total intake:
IV fluids:
Lactated Ringer's IV: 150 ml/hr x 9 hrs = 1350 ml
Cefazolin: 100 ml
0.9% sodium chloride (2 units): 250 ml x 2 = 500 ml
Ranitidine: 50 ml
Packed RBCs:
275 ml + 250 ml = 525 ml
Total intake:
1350 ml + 100 ml + 500 ml + 50 ml + 525 ml = 2525 ml
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