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 A
Explanation
A. Shake the suspension well before each administration.
The medication label specifically states, "IMPORTANT: SHAKE WELL BEFORE EACH USE," and "THIS PRODUCT MUST BE SHAKEN WELL ESPECIALLY PRIOR TO INITIAL USE." This indicates the necessity of shaking the suspension before administration to ensure proper mixing of the medication.
B. Dilute the suspension with 38 mL water prior to initial use.
There is no indication on the label to dilute the suspension with water. The label emphasizes shaking well before use, but dilution is not mentioned.
C. Store the suspension in the refrigerator.
The storage instructions on the label state, "Store at 20° to 25°C (68° to 77° F) see USP controlled room temperature." Refrigeration is not mentioned, and it is not recommended to deviate from the specified storage conditions.
D. Discard the suspension 14 days after opening the bottle.
The label does not provide specific information about the shelf life after opening. Therefore, it is essential to follow the specific instructions on the label or refer to the package insert for complete prescribing information regarding the expiration or discard date after opening. The information on the label does not specify a 14-day limit.
Correct Answer is ["D","E"]
Explanation
A. Administer the medication twice daily. - No, the prescription states 50 mg PO TID (three times a day), not twice daily.
B. Administer the medication as needed for pain. - No, the prescription specifies a scheduled regimen, not PRN (as needed).
C. Administer the medication 2 hours after meals. - No, the prescription advises taking it with food, not after meals.
D. Administer a loading dose of 100 mg PO. - Yes, the initial dose is 100 mg PO now.
E. Administer the medication with a snack. - Yes, the prescription advises taking it with food, so administering it with a snack aligns with this instruction.
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