A nurse is preparing to administer phenytoin 300 mg PO every 12 hr to a client who has a seizure disorder. Available is phenytoin oral suspension 125 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 ["12"]
To calculate the dose of phenytoin oral suspension for a client with a seizure disorder, the nurse needs to use the following formula:
Dose (mL) = Ordered dose (mg) / Concentration (mg/mL)
In this case, the ordered dose is 300 mg and the concentration is 125 mg/5 mL. Therefore, the dose in mL is:
Dose (mL) = 300 mg / (125 mg/5 mL)
Dose (mL) = 300 mg x (5 mL/125 mg)
Dose (mL) = 12 mL
The nurse should round the answer to the nearest whole number, which is 12 mL. The nurse should administer 12 mL of phenytoin oral suspension every 12 hours to the client.
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Related Questions
Correct Answer is ["0.71"]
Explanation
To calculate the correct dose of ceftriaxone for an adult client with a gonococcal infection, the nurse should use the following formula:
Dose (mg) / Concentration (mg/mL) = Volume (mL)
Plugging in the values from the question, we get:
250 mg / 350 mg/mL = 0.71 mL
Therefore, the nurse should administer 0.71 mL of the reconstituted medication to the client.
Correct Answer is A
Explanation
A. Shake the suspension well before each administration.
The medication label specifically states, "IMPORTANT: SHAKE WELL BEFORE EACH USE," and "THIS PRODUCT MUST BE SHAKEN WELL ESPECIALLY PRIOR TO INITIAL USE." This indicates the necessity of shaking the suspension before administration to ensure proper mixing of the medication.
B. Dilute the suspension with 38 mL water prior to initial use.
There is no indication on the label to dilute the suspension with water. The label emphasizes shaking well before use, but dilution is not mentioned.
C. Store the suspension in the refrigerator.
The storage instructions on the label state, "Store at 20° to 25°C (68° to 77° F) see USP controlled room temperature." Refrigeration is not mentioned, and it is not recommended to deviate from the specified storage conditions.
D. Discard the suspension 14 days after opening the bottle.
The label does not provide specific information about the shelf life after opening. Therefore, it is essential to follow the specific instructions on the label or refer to the package insert for complete prescribing information regarding the expiration or discard date after opening. The information on the label does not specify a 14-day limit.
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