A nurse is preparing to administer ampicillin 500 mg IM every 6 hr. Available is ampicillin 500 mg vial. The package insert instructs adding 1.8 mL of sterile water to yield ampicillin 250 mg/mL. How many mL should the nurse administer per dose?
(Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["2"]
To calculate the amount of ampicillin the nurse should administer per dose in milliliters (mL) for a 500 mg IM dose, we can use the following steps:
Given:
Ampicillin dose: 500 mg
Available concentration after reconstitution: 250 mg/mL
Volume of sterile water to be added: 1.8 mL
Step 1: Calculate the amount of ampicillin to be administered per dose in mL
First, we need to reconstitute the ampicillin vial to yield the desired concentration of 250 mg/mL.
The concentration after reconstitution is 250 mg/mL, and the total dose required is 500 mg. Therefore, the nurse needs to administer:
Volume = Ampicillin dose / Concentration
Volume = 500 mg / 250 mg/mL
Volume = 2 mL
Rounding to the nearest whole number:
Volume = 2 mL
Therefore, the nurse should administer 2 mL of the reconstituted ampicillin solution per dose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.7"]
Explanation
To calculate the amount of epoetin that the nurse should administer, we can use the following formula:
Amount to administer (mL) = (Desired dose in units) / (Amount of drug in 1 mL)
Given:
Desired dose = 7,000 units
Amount of drug in 1 mL = 10,000 units/mL
Now, let's calculate the amount to administer:
Amount to administer (mL) = 7,000 units / 10,000 units/mL
Amount to administer (mL) = 0.7 mL
Rounding to the nearest tenth, the nurse should administer 0.7 mL of the epoetin.
Correct Answer is C
Explanation
Choice A reason: This is incorrect. Dry cough and nose bleed are not common side effects of gemfibrozil. They may indicate other conditions, such as allergies, infections, or bleeding disorders.
Choice B reason: This is incorrect. Constipation and dry skin are not common side effects of gemfibrozil. They may be caused by dehydration, dietary factors, or other medications.
Choice C reason: This is correct. Abdominal pain and jaundice are serious side effects of gemfibrozil. They may indicate liver damage, which can be fatal if not treated promptly. The client should report these symptoms to the prescriber immediately.
Choice D reason: This is incorrect. Hirsutism and flatulence are not common side effects of gemfibrozil. They may be associated with hormonal imbalances, digestive disorders, or other causes.
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