A nurse is caring for a client who is to receive liquid medications via a gastrostomy tube. The client is prescribed phenytoin 250 mg. The amount available is phenytoin oral solution 25 mg/5 mL. How many mL should the nurse administer per dose?
(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 ["50"]
To calculate the mL of phenytoin oral solution needed for a 250 mg dose, we can use the following equation:
Dose (mg) = Volume (mL) × Concentration (mg/mL)
Given:
Dose = 250 mg
Concentration = 25 mg/5 mL
We need to find the volume (mL):
Volume (mL) = Dose (mg) / Concentration (mg/mL)
Volume (mL) = 250 mg / (25 mg/5 mL)
Volume (mL) = 250 mg / (5 mg/mL)
Volume (mL) = 50 mL
So, the nurse should administer 50 mL of phenytoin oral solution per dose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A) Kidneys are very small and irregular.
Explanation: This statement is not the primary reason for instructing caregivers about preventing kidney injury in babies or children under 2 years old. While it is true that infant and toddler kidneys are relatively smaller and have a slightly different shape compared to adult kidneys, the main concern for kidney injury prevention in this age group is related to other factors.
B) The occurrence of Hirsutism.
Explanation: Hirsutism refers to excessive hair growth, typically in a male pattern, in women and children. It is not directly related to kidney injury prevention in babies or children under 2 years old. Hirsutism is usually caused by hormonal imbalances and is not a primary consideration when instructing caregivers about preventing kidney injury.
C) Diaper rashes.
Explanation: Diaper rashes are skin irritations that occur in the diaper area of infants and young children. While diaper rashes can be uncomfortable and require proper care, they are not a major concern when instructing caregivers about preventing kidney injury. Diaper rashes are typically a result of prolonged exposure to moisture and can be managed with good hygiene practices and appropriate diaper-changing routines.
D) Children under two years old are more vulnerable to kidney trauma from compression force to abdomen.
Explanation: This statement is true and is the main reason for instructing caregivers about preventing kidney injury in babies or children under 2 years old. Children in this age group have relatively larger abdomens and less developed abdominal muscles, which makes their kidneys more susceptible to injury from compression forces to the abdomen. This is why caregivers are advised to handle young children carefully, avoid rough play, and ensure that they are securely fastened in car seats and other safety devices to prevent potential kidney trauma.
Correct Answer is D
Explanation
A) Absence of proteinuria:
Chronic glomerulonephritis often involves damage to the glomeruli in the kidneys, which can lead to the leakage of protein into the urine, resulting in proteinuria. The absence of proteinuria would be an unexpected finding in a patient with chronic glomerulonephritis. Therefore, this choice is incorrect.
B) Serum phosphorus 4.0 mg/dL (within expected reference range):
Serum phosphorus levels within the expected reference range are not directly related to chronic glomerulonephritis. While abnormalities in electrolyte levels might occur due to kidney dysfunction, serum phosphorus within the normal range is not a hallmark finding of glomerulonephritis. Therefore, this choice is incorrect.
C) Serum potassium 3.8 mEq/L (within the expected reference range):
Similar to serum phosphorus, serum potassium levels within the normal range are not specific to chronic glomerulonephritis. Kidney dysfunction can indeed affect electrolyte levels, but a serum potassium level within the normal range doesn't provide specific information about glomerulonephritis. Therefore, this choice is incorrect.
D) BUN 50 mg/dL (elevated):
Blood Urea Nitrogen (BUN) is a waste product that is filtered by the kidneys. Elevated BUN levels indicate impaired kidney function, as the kidneys are less efficient at filtering and excreting waste products. Chronic glomerulonephritis can lead to progressive kidney damage, which can result in elevated BUN levels due to decreased filtration and clearance. Therefore, an elevated BUN level is an expected finding in a patient with chronic glomerulonephritis.
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