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.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Reflexes play a crucial role in evaluating the neurological status of infants.
Moro reflex: Also known as the startle reflex, the Moro reflex is a normal response in infants. It occurs when an infant is startled by a sudden noise or movement. The baby responds by extending their arms and legs, followed by a quick contraction. This reflex usually disappears around 4-6 months of age.
Tonic neck reflex (fencer's reflex): This reflex involves turning an infant's head to one side, causing the arm on that side to extend and the opposite arm to flex. It's a normal reflex that typically disappears around 4-6 months of age.
Withdrawal reflex: The withdrawal reflex is a normal response to a stimulus, such as touching a baby's foot with a cold object. The baby will pull their leg away in response to the stimulus.
Symptomatic of decorticate or decerebrate posturing (options A and B):
Decorticate and decerebrate posturing are abnormal postures seen in individuals with severe brain damage or injury. Decorticate posturing involves the arms being flexed and held close to the body, while decerebrate posturing involves the arms being extended and the wrists being pronated. These reflexes are typically indicative of significant neurological dysfunction and are not expected in a 2-month-old infant after a car accident.
Indicators of severe brain damage (option C):
The reflexes described (Moro, tonic neck, and withdrawal reflexes) are not indicative of severe brain damage in a 2-month-old infant. These reflexes are normal for an infant of this age and are part of their typical neurological development.
Normal findings (option D):
The reflexes described are normal findings in a 2-month-old infant and are expected as part of their developmental milestones.
Correct Answer is D
Explanation
A. Polyuria (excessive urination) is not a symptom of hypoglycemia; it is more commonly associated with hyperglycemia (high blood sugar).
B. Deep rapid respirations are more characteristic of diabetic ketoacidosis (DKA), a complication of uncontrolled diabetes that leads to high blood sugar levels and metabolic acidosis.
C. Dry, flushed skin is not a typical symptom of hypoglycemia; it might be associated with conditions like dehydration or heat exposure, but not with low blood sugar.
D. Tachycardia
Explanation: The symptoms described by the adolescent (feeling shaky, difficulty speaking, difficulty concentrating) along with a blood glucose level of 55 mg/dL indicate hypoglycemia, which is low blood sugar. Tachycardia, or a rapid heart rate, is a common physiological response to hypoglycemia. The body increases the heart rate in an attempt to improve blood flow and deliver glucose to the brain and other vital organs. This is part of the body's fight-or-flight response to low blood sugar.
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