ATI PN Management 2020
ATI PN Management 2020 ( 86 Questions)
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.)
To give a client with rheumatoid arthritis a subcutaneous dose of methotrexate 7.5 mg, the nurse needs to calculate the correct volume of the drug solution. T
he drug solution has a concentration of 15 mg/0.4 mL, which means that 0.4 mL of the solution contains 15 mg of methotrexate. To find the volume of the solution that contains 7.5 mg of methotrexate, the nurse can use a proportion:
15 mg/0.4 mL = 7.5 mg/x mL
Cross-multiplying and solving for x gives:
x = (0.4 mL x 7.5 mg) / 15 mg
x = 0.2 mL
Therefore, the nurse should administer 0.2 mL of the drug solution to deliver 7.5 mg of methotrexate subcutaneously.