A nurse is preparing to administer diphenhydramine 50 mg PO every 6 hours to a client who has acute dystonia.

Available are diphenhydramine 25 mg tablets. How many tablets 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.)

Choice A reason: Decreasing the IV fluid infusion rate and limiting oral fluid intake may not be appropriate without further assessment, as the client's BUN level is elevated, which could indicate dehydration or renal impairment. The normal range for BUN is typically 7-20 mg/dL.

Choice B reason: Collecting a urine specimen for culture and sensitivity may be necessary if there is a suspicion of infection, but there is no indication of infection based solely on the provided lab values.

Choice C reason: Evaluating urine for amount and specific gravity can help assess the client's hydration status and kidney function, which is pertinent given the elevated BUN level and ongoing nausea and vomiting.

Choice D reason: Continuing routine care may not be appropriate because the BUN level is above the normal range, indicating that further assessment and intervention may be necessary.

Choice A reason: Measuring blood pressure di?erences is not a method to assess the patency of an AV graft.

Choice B reason: Checking pulses is important but does not confirm the patency of the AV graft.

Choice C reason: Using a Doppler stethoscope at the antecubital fossa is not the standard method for assessing AV graft patency.

Choice D reason: Auscultating for a bruit at the site of the AV graft is a common and non-invasive way to assess for patency.