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 B
Explanation
Choice A reason:
Client history of hypertension is not a contraindication for propofol (Diprivan) use. Propofol is primarily metabolized in the liver and excreted by the kidneys. It is generally well tolerated by most patients, including those with hypertension. Hypertension, however, is a condition that needs careful monitoring when using any anesthetic, as anesthesia can sometimes cause changes in blood pressure. This choice might be distracting because patients with hypertension require close monitoring, but it is not a specific contraindication.
Choice B reason:
Allergies to egg or soy products are a significant contraindication for the use of propofol. Propofol is formulated in a lipid emulsion that contains soybean oil and egg lecithin. Patients with known allergies to eggs or soy products may have a hypersensitivity reaction to propofol. Therefore, it is crucial for the nurse to assess for these allergies before administering the medication. This answer directly addresses the specific content of propofol and potential allergenic ingredients.
Choice C reason:
An allergy to latex is not directly relevant to the use of propofol. While latex allergies are important to identify in a clinical setting to avoid exposure to latex-containing medical supplies, they do not contraindicate the use of propofol. Propofol itself does not contain latex, and thus this choice does not address a specific contraindication for the drug in question.
Choice D reason:
The statement that propofol has no contraindications is incorrect. Like any medication, propofol has contraindications that need to be considered before administration. Allergies to its components, specifically egg and soy products, are known contraindications. This choice is misleading as it overlooks these critical factors.
Correct Answer is ["B","C","D"]
Explanation
Choice A reason: Grilled chicken is a suitable food choice for clients taking MAOIs. It does not contain significant levels of tyramine and poses no risk of causing hypertensive crises, which can occur when tyramine-rich foods are consumed.
Choice B reason: This is the correct answer. Red wine contains high levels of tyramine, which can interact with MAOIs to cause severe hypertensive crises. Patients on MAOIs are advised to avoid all forms of fermented alcoholic beverages.
Choice C reason: This is the correct answer. Smoked sausage is another food high in tyramine. The fermentation and curing processes increase tyramine content, making it unsafe for patients on MAOIs.
Choice D reason: This is the correct answer. Aged cheddar and other aged cheeses contain high levels of tyramine due to the aging process. Consuming these can lead to dangerous blood pressure elevations in patients taking MAOIs.
Choice E reason: Cereal is typically safe for clients on MAOIs as it generally does not contain tyramine. Regular cereal options are suitable for a diet that needs to avoid tyramine-rich foods.
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