A nurse is preparing to administer cefazolin 250 mg IM to a client. Available is cefazolin powder for injection 500 mg vial. The nurse reconstitutes the powder with 2 mL of sterile water for a concentration of 225 mg/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 ["1.1"]
To calculate the dosage of cefazolin, the nurse needs to use the formula D/H x Q, where D is the desired dose, H is the dose on hand, and Q is the quantity.
In this case, D is 250 mg, H is 225 mg/mL, and Q is 1 mL.
Plugging these values into the formula, we get:
250 mg / 225 mg/mL x 1 mL = 1.11 mL
Therefore, the nurse should administer 1.1 mL of cefazolin IM to the client.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.75"]
Explanation
To calculate the dose of methylprednisolone acetate injection, the nurse should use the following formula:
Dose (mL) = Desired dose (mg) / Available dose (mg/mL)
Plugging in the values from the question, we get:
Dose (mL) = 60 mg / 80 mg/mL
Dose (mL) = 0.75 mL
Correct Answer is ["0.5"]
Explanation
To calculate the dosage of quinapril, the nurse needs to apply the formula: D/H x Q = X, where D is the desired dose, H is the dose on hand, Q is the quantity of the drug, and X is the amount to administer.
In this case, D = 20 mg, H = 40 mg, Q = 1 tablet, and X is unknown.
Plugging in the values, we get: 20/40 x 1 = X.
Simplifying, we get: 0.5 = X.
Therefore, the nurse should administer 0.5 tablets of quinapril.
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