Ati dosage calculation Rn fundamentals proctored assessment 3.2
Calculation
A nurse is preparing to administer metronidazole 7.5 mg/kg PO to a client who weighs 146.7 lb. Available is metronidazole 500 mg tablets. How many tablets should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
tablet
Explanation & Rationale
Identify the given information: Dose of metronidazole: 7.5 mg/kg Weight of the client: 146.7 lb Concentration of metronidazole tablets: 500 mg/tablet Convert the client's weight from pounds to kilograms: 1 lb ≈ 0.453592 kg Calculate the total dose of metronidazole in mg: Total dose = Dose/kg x Weight (kg) Substitute the values: Total dose = 7.5 mg/kg x 146.7 lb x (0.453592 kg/1 lb) Total dose ≈ 498.5 mg Calculate the number of tablets to be administered: Number of tablets = Total dose (mg) / Concentration (mg/tablet) Substitute the values: Number of tablets = 498.5 mg / 500 mg/tablet Number of tablets ≈ 0.997 Round the answer to the nearest whole number: Number of tablets ≈ 1 tablet
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