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 ["2"]
Explanation
Step 1: Determine the total daily dose of quetiapine.
- The provider prescribes 50 mg every 12 hours.
- Total daily dose = 50 mg × 2 = 100 mg.
Step 2: Calculate the total dose for 3 days.
- Total dose for 3 days = 100 mg × 3 = 300 mg.
Step 3: Determine the dose per administration.
- The total daily dose is divided into two doses (every 12 hours).
- Dose per administration = 100 mg ÷ 2 = 50 mg.
Step 4: Calculate the number of tablets needed per dose.
- Each tablet is 25 mg.
- Number of tablets per dose = 50 mg ÷ 25 mg = 2 tablets.
Step 5: Confirm the number of tablets to be administered per dose on day 3.
- The dose per administration remains the same each day.
- Therefore, the nurse should administer 2 tablets per dose on day 3.
So, the nurse should administer 2 tablets per dose on day 3.
Correct Answer is C
Explanation
Choice A Reason: This is incorrect because gastrointestinal bleeding is not an adverse effect of hydralazine, which is a vasodilator that lowers blood pressure by relaxing the smooth muscles of the blood vessels. Gastrointestinal bleeding can be caused by other conditions such as ulcers, gastritis, or hemorrhoids.
Choice B Reason: This is incorrect because sweating is not an adverse effect of hydralazine, but a normal response to vasodilation and heat loss. Sweating can also be caused by other factors such as fever, anxiety, or exercise.
Choice C Reason: This is correct because tachycardia is an adverse effect of hydralazine, which can occur as a reflex response to vasodilation and hypotension. Tachycardia can increase the cardiac workload and oxygen demand, which can be harmful for pregnant women with preeclampsia who already have impaired placental perfusion and fetal hypoxia.
Choice D Reason: This is incorrect because blurred vision is not an adverse effect of hydralazine, but a symptom of severe preeclampsia that indicates cerebral edema or ischemia. Blurred vision can also be caused by other conditions such as diabetes, glaucoma, or cataracts.
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