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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.)
Answer and Explanation

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.


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Related Questions

Correct Answer is ["A","B","E"]

Explanation

Choice A reason: Excessive urination is a sign of hyperglycemia because the body tries to flush out the excess glucose in the blood through the urine. This can also lead to dehydration and electrolyte imbalance.

Choice B reason: Excessive thirst is a sign of hyperglycemia because the body loses fluid and becomes dehydrated due to frequent urination. The thirst mechanism is activated to replenish the fluid loss.

Choice C reason: Diaphoresis is not a sign of hyperglycemia, but rather a sign of hypoglycemia (low blood sugar). Hypoglycemia can cause sweating, shakiness, anxiety, and confusion.

Choice D reason: Atrial fibrillation is not a sign of hyperglycemia, but rather a possible complication of hyperglycemia. Hyperglycemia can damage the blood vessels and the heart, increasing the risk of arrhythmias, such as atrial fibrillation.

Choice E reason: Excessive hunger is a sign of hyperglycemia because the body is unable to use the glucose in the blood for energy. The cells are starved of fuel, and the hunger signal is triggered to stimulate food intake..

Correct Answer is ["83"]

Explanation

To calculate the IV flow rate in drops per minute, we can use the following formula:

IV flow rate (gtt/min) = (Volume to be infused in mL drop factor) / Time in minutes

Given:

Volume to be infused = 250 mL

Drop factor = 10 gtt/mL

Time = 30 minutes

Using the formula:

IV flow rate = (250 mL 10 gtt/mL) / 30 min

IV flow rate ≈ (2500 gtt) / 30 min

IV flow rate ≈ 83.33 gtt/min

Rounding to the nearest whole number, the nurse should set the manual IV flow rate to deliver 83 gtt/min.

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