A nurse is preparing to administer diphenhydramine 25 mg PO every 6 hours to an older adult patient who has rhinitis.
The available medication is diphenhydramine syrup 12.5 mg/5 mL. How many mL should the nurse administer?
5 mL.
10 mL.
15 mL.
20 mL.
The Correct Answer is B
Choice A rationale
Administering 5 mL of the available medication would only provide 12.5 mg of diphenhydramine, which is half the required dose. Therefore, this is not the correct choice.
Choice B rationale
The available medication is diphenhydramine syrup 12.5 mg/5 mL. To administer the required dose of 25 mg, the nurse would need to give 10 mL of the syrup. This is because 25 mg (required dose) divided by 12.5 mg (dose per 5 mL) equals 2. Therefore, 2 times 5 mL equals 10 mL. This is the correct choice as it provides the exact required dose.
Choice C rationale
Administering 15 mL of the available medication would provide 37.5 mg of diphenhydramine, which is more than the required dose. Therefore, this is not the correct choice.
Choice D rationale
Administering 20 mL of the available medication would provide 50 mg of diphenhydramine, which is double the required dose. Therefore, this is not the correct choice.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
If 500 mL of fluid is removed during thoracentesis, the nurse should notify the provider. Removing large volumes of fluid can cause re-expansion pulmonary edema.
Choice B rationale
A clear chest x-ray is an expected finding after thoracentesis.
Choice C rationale
PCO2 is a measure of carbon dioxide levels in the blood. It is not directly related to thoracentesis.
Choice D rationale
Hematocrit is a measure of the proportion of red blood cells in the blood. It is not directly related to thoracentesis.
Correct Answer is ["C","E"]
Explanation
Choice A rationale:
Oxygen saturation is not provided in the exhibits, so there is no data available to evaluate if it indicates improvement in the client’s condition. While oxygen saturation is an important indicator of respiratory function and overall oxygenation status, its absence means it cannot be used to assess the client’s progress in this case.
Choice B rationale:
Hemoglobin levels decreased from 14 g/dL on postoperative day 1 to 10.5 g/dL on postoperative day 2. This decline in hemoglobin levels suggests that the client may be experiencing blood loss or anemia, which is not indicative of improvement. Generally, an improvement in the client’s condition would be reflected in stable or increasing hemoglobin levels rather than a decrease.
Choice C rationale:
Mental status is an important indicator of overall recovery and improvement. On postoperative day 2, the client is described as drowsy but alert to voice. This level of responsiveness indicates an improvement in mental status compared to what might be expected immediately post-surgery. A client who is drowsy but still responsive to verbal stimuli is showing signs of regaining consciousness and cognitive function, which is a positive sign of recovery.
Choice D rationale:
Urinary output is not provided in the exhibits, so there is no data available to assess if it indicates improvement. Urinary output is an important measure of kidney function and fluid status, but without specific data, it cannot be used to determine the client’s progress.
Choice E rationale:
The WBC count increased from 7,000/mm³ on day 1 to 8,500/mm³ on day 2, which is within the normal range and indicates a healthy immune response.
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