A nurse is preparing to administer methotrexate 7.5 mg subcutaneous for a client who has rheumatoid arthritis. Available is methotrexate 15 mg/0.4 mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.2"]
To calculate the dosage of methotrexate for a client who has rheumatoid arthritis, the nurse needs to use the following formula:
D/H x Q = X, where D is the desired dose, H is the dose on hand, Q is the quantity of the solution, and X is the amount to administer.
In this case, D is 7.5 mg, H is 15 mg, and Q is 0.4 mL.
Plugging these values into the formula, we get: 7.5/15 x 0.4 = 0.2.
Therefore, the nurse should administer 0.2 mL of methotrexate subcutaneously for the client.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.71"]
Explanation
To calculate the correct dose of ceftriaxone for an adult client with a gonococcal infection, the nurse should use the following formula:
Dose (mg) / Concentration (mg/mL) = Volume (mL)
Plugging in the values from the question, we get:
250 mg / 350 mg/mL = 0.71 mL
Therefore, the nurse should administer 0.71 mL of the reconstituted medication to the client.
Correct Answer is ["80"]
Explanation
To calculate the infusion rate for gentamicin, the nurse should use the following formula:
Infusion rate (mL/hr) = Volume (mL) / Time (hr)
Plugging in the given values, we get:
Infusion rate (mL/hr) = 100 mL / (75 min / 60 min/hr)
Simplifying, we get:
Infusion rate (mL/hr) = 100 mL / 1.25 hr
Dividing, we get:
Infusion rate (mL/hr) = 80 mL/hr
Therefore, the nurse should ensure the IV pump is set to deliver 80 mL/hr of gentamicin.
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