A client is prescribed 125 mg of a medication through subcutaneous injection. The directions on the package insert state to reconstitute the medication with 2.5 mL of sterile water for injection to yield 1000 mg/2 mL
How many mL of the medication should the nurse provide to the client? 1. 0.25 mL
2. 2.5 mL
3. 0.125 mL
4. 1.25 mL
1
Rationale 1: After reconstituting the medication with 2.5 mL of sterile water for injection the vial contains 1000 mg/2 mL. To determine the volume of mL the nurse will complete the following:
mL/dose = 2 mL/1000 mg x 125 mg/ 1. Multiply the numerators (2 x 125 = 250). Multiply the denominators (1000 x 1 = 1000). 250/1000 = 0.25 mL.
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