A nurse is preparing to administer phenytoin 75 mg PO every 6 hours. Available is phenytoin 25 mg/5 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 ["15"]
Step 1: Determine the concentration of medication in 1 mL.
Divide the amount of medication (25 mg) by the volume (5 mL).
25 ÷ 5 = 5 mg per mL.
Step 2: Calculate the volume required for the prescribed dose.
Divide the prescribed dose (75 mg) by the concentration (5 mg per mL).
75 ÷ 5 = 15 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","C"]
Explanation
Choice A reason:
Regular insulin combined with dextrose can be used to lower high potassium levels, serving as an antidote for hyperkalemia. This combination helps drive potassium back into the cells, reducing serum potassium levels.
Choice B reason:
Never pushing IV KCL is critical because it can cause fatal arrhythmias. Potassium chloride must be administered as an infusion over time to safely deliver the necessary potassium without causing cardiac complications.
Choice C reason:
Infusion of KCL can cause burning, extravasation, and infiltration at the infusion site. This is because potassium chloride is an irritant to veins, so the site should be monitored closely during administration.
Choice D reason:
IV push boluses of KCL are dangerous and contraindicated due to the high risk of causing life-threatening arrhythmias. KCL should always be infused slowly to mitigate this risk.
Choice E reason:
There is no specific requirement that KCL must be given with the patient supine. This position does not affect the administration or safety of potassium chloride infusion.
Correct Answer is A
Explanation
Choice A reason:
The passage of flatus is a clear indication that the gastrointestinal (GI) tract is regaining its normal function after surgery. It suggests that bowel movement is occurring and that peristalsis is returning, which is a positive sign of GI recovery.
Choice B reason:
A request for tea and toast may indicate the client feels well enough to eat, but it does not provide direct evidence of returning peristalsis. Appetite can return before bowel function is fully restored.
Choice C reason:
Hypoactive bowel sounds in two quadrants indicate reduced bowel activity, not necessarily the return of normal peristalsis. Normal peristalsis would typically produce active bowel sounds.
Choice D reason:
Abdominal distention often signals that gas or fluid is trapped in the intestines, suggesting delayed bowel function rather than the return of peristalsis.
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