A nurse is preparing to administer phenytoin 200 mg via a gastrostomy tube. Available is phenytoin oral suspension 125 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 ["8"]
To calculate the amount of phenytoin oral suspension to administer, we can use the following formula:
Amount to administer (mL) = (Desired dose (mg) / Available dose (mg/mL))
Plugging in the given values:
Amount to administer (mL) = (200 mg / 125 mg/5 mL)
Now, let's solve for the amount to administer:
Amount to administer (mL) = (200 mg / 125 mg/5 mL) = (200 / 125) 5 = 8
So, the nurse should administer 8 mL of phenytoin oral suspension via the gastrostomy tube.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["4"]
Explanation
To determine how many capsules of rifampin the nurse should administer per dose, we can follow these steps:
Convert the client's weight from pounds to kilograms:
132 lb ÷ 2.2 = 59.9 kg (rounded to one decimal place)
Calculate the total daily dose of rifampin:
20 mg/kg/day × 59.9 kg = 1198 mg/day
Divide the total daily dose into two equal doses for administration:
1198 mg/day ÷ 2 = 599 mg per dose
Calculate the number of capsules needed per dose:
150 mg per capsule
599 mg per dose ÷ 150 mg per capsule = 3.9933...
Rounding to the nearest whole number, the nurse should administer 4 capsules per dose.
Therefore, the nurse should administer 4 capsules of rifampin per dose.
Correct Answer is D
Explanation
Choice A reason: This choice is incorrect because checking the apical heart rate before taking calcium channel blockers is not necessary for most patients. Calcium channel blockers are a group of medications that relax and widen blood vessels, lower blood pressure, and slow the heart rate. They are used to treat conditions such as hypertension, angina, and arrhythmias. The nurse should check the apical heart rate only if the patient has a history of bradycardia (slow heart rate) or heart block (a problem with the electrical conduction of the heart).
Choice B reason: This choice is incorrect because calcium channel blockers do not cause increased blood pressure, but rather lower it. Blurred vision is not a common side effect of calcium channel blockers, and it may indicate other problems, such as eye infection, glaucoma, or stroke. The nurse should instruct the patient to report any changes in vision, but not to associate them with calcium channel blockers.
Choice C reason: This choice is incorrect because calcium channel blockers do not affect cholesterol levels, and the time of day they are taken does not matter. Cholesterol is a type of fat that circulates in the blood and can build up in the arteries, causing atherosclerosis (hardening and narrowing of the arteries). Cholesterol levels are influenced by diet, exercise, genetics, and other medications, such as statins. The nurse should advise the patient to follow a healthy lifestyle and take any prescribed medications for cholesterol control.
Choice D reason: This choice is correct because grapefruit juice can interact with some calcium channel blockers, such as nifedipine, verapamil, and diltiazem, and increase their blood levels and effects. This can cause serious side effects, such as low blood pressure, dizziness, headache, flushing, and edema (swelling). The nurse should warn the patient to avoid grapefruit juice and any products that contain grapefruit while taking calcium channel blockers.
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