The nurse prepares to administer promethazine 35 mg intramuscularly prescribed as needed for a client with cholecystitis who has severe nausea. The ampule label reads that the medication is available in 25 mg/mL. How many milliliters should the nurse administer?
Record your answer using one decimal place.
1
1.4
1.5
0.7
The Correct Answer is B
Choice A rationale: this corresponds with 25 mg which is lower than the prescribed amount.
Choice B rationale: To answer this question, we need to use the formula: volume (mL) = dose (mg) / concentration (mg/mL). We plug in the given values: volume (mL) = 35 mg / 25 mg/mL. We simplify the fraction: volume (mL) = 7/5. We convert the fraction to a
decimal: volume (mL) = 1.4. Therefore, the nurse should administer 1.4 mL of promethazine.
Choice C rationale: this corresponds with 37.5 mg which is too high.
Choice D rationale: this corresponds with 17.5 mg which is too low.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale: Petit mal seizures, also known as absence seizures, involve a sudden lapse in consciousness for a brief duration, typically 5 to 30 seconds.
Choice B rationale: Clonic seizures involve rhythmic jerking movements.
Choice C rationale: Tonic-clonic seizures involve both tonic (muscle stiffness) and clonic (rhythmic jerking) phases.
Choice D rationale: Tonic seizures involve muscle stiffness but don't usually present as sudden lapses of consciousness in a short duration.
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Correct Answer is C
Explanation
Choice A rationale: Performing active range of motion exercises may not be safe or appropriate immediately following a hemorrhagic stroke.
Choice B rationale: Maintaining the head of bed flat or at a 30-degree position might be used for ischemic strokes but not necessarily for hemorrhagic strokes.
Choice C rationale: Teaching measures to avoid the Valsalva maneuver (straining during activities like defecation) helps prevent sudden increases in intracranial pressure, which can be detrimental after a hemorrhagic stroke.
Choice D rationale: Monitoring for Battle's sign (bruising behind the ears associated with basilar skull fracture) is not relevant in the care of a hemorrhagic stroke.
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