A nurse is preparing to administer penicillin G benzathine 1.2 million units IM now. The amount available is penicillin G benzathine 600,000 units/mL. How many mL should the nurse administer?
(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"]
The correct answer is 2 mL. To calculate the volume to administer, the nurse should use the following formula:
Volume (mL) = Dose (units) / Concentration (units/mL)
Plugging in the given values, we get:
Volume (mL) = 1,200,000 units / 600,000 units/mL
Volume (mL) = 2 mL
Rounding to the nearest whole number, we get 2 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A Reason: This is incorrect because ferrous sulfate is an iron supplement that is used to treat or prevent iron-deficiency anemia. It has no effect on magnesium sulfate, which is a medication that lowers blood pressure and prevents seizures in severe preeclampsia.
Choice B Reason: This is incorrect because potassium chloride is an electrolyte supplement that is used to treat or prevent low levels of potassium in the blood. It has no effect on magnesium sulfate, which can cause hypermagnesemia, or high levels of magnesium in the blood.
Choice C Reason: This is incorrect because calcium carbonate is an antacid that is used to treat or prevent heartburn, indigestion, or calcium deficiency. It has no effect on magnesium sulfate, which can cause hypocalcemia, or low levels of calcium in the blood.
Choice D Reason: This is correct because calcium gluconate is an antidote that is used to treat magnesium toxicity, which can occur when magnesium sulfate is given in high doses or for prolonged periods. Calcium gluconate reverses the effects of magnesium sulfate on the neuromuscular and cardiovascular systems, such as muscle weakness, respiratory depression, cardiac arrhythmias, or cardiac arrest.
Correct Answer is ["415"]
Explanation
To calculate the amount of NG drainage, the nurse should subtract the amount of irrigation fluid from the amount of fluid in the NG canister. The irrigation fluid is not part of the drainage, but rather a way to keep the NG tube patent and prevent clogging.
The amount of irrigation fluid is 30 mL x 2 = 60 mL.
The amount of fluid in the NG canister is 475 mL.
Therefore, the amount of NG drainage is 475 mL - 60 mL = 415 mL.
The answer should be rounded to the nearest whole number and use a leading zero if it applies. Do not use a trailing zero.
Therefore, the final answer is 415 mL.
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