Detailed Answer Key ATI Math Remediation #1 Questions and Answers (with rationales)

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1. A nurse is caring for a 1-month-old infant who weighs 3500 g and is prescribed a dose of cephazolin 50 mg/kg by intermittent IV bolus three times daily. How many mg should the nurse administer per ... dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.) 175 mg Correct Rationale: Convert gm to kg: STEP 1: What is the unity of measurement to calculate? Kg STEP 2: Set up the equation and solve for X. 1000 gm/1 kg = client's weight in gm/X kg 1000 gm/1 kg = 3500 g/X kg X = 3.54 kg STEP 3: Round, if necessary. STEP 4: Reassess to determine whether the conversion to kg makes sense. If 1000 gm = 1 kg, it makes sense that 3500 gm = 3.5 kg. Calculate Dose: STEP 1: What is the unit of measurement to calculate? mg STEP 2: Set up the equation and solve for X. mg x kg/dose = X 50 mg x 3.5 kg = 175 mg STEP 3: Round, if necessary. STEP 4: Reassess to determine whether the amount to administer makes sense. If the provider prescribed 50 mg/kg/dose and the client weighs 3.5 kg, it makes sense to administer 175 mg per dose. The nurse should administer cephazolin 175 mg by intermittent IV bolus 3 times daily. InCorrect Rationale: Convert gm to kg: STEP 1: What is the unity of measurement to calculate? Kg STEP 2: Set up the equation and solve for X. 1000 gm/1 kg = client's weight in gm/X kg 1000 gm/1 kg = 3500 g/X kg X = 3.54 kg STEP 3: Round, if necessary. STEP 4: Reassess to determine whether the conversion to kg makes sense. If 1000 gm = 1 kg, it makes sense that 3500 gm = 3.5 kg. Calculate Dose: STEP 1: What is the unit of measurement to calculate? mg STEP 2: Set up the equation and solve for X. mg x kg/dose = X 50 mg x 3.5 kg = 175 mg STEP 3: Round, if necessary. STEP 4: Reassess to determine whether the amount to administer makes sense. If the provider prescribed 50 mg/kg/dose and the client weighs 3.5 kg, it makes sense to administer 175 mg per dose. The nurse should administer cephazolin 175 mg by intermittent IV bolus 3 times daily. 2. A nurse is caring for an adolescent client who has pneumonia and a prescription for cefpodoxime 5 mg/kg PO every 12 hr for 5 days. The client weighs 88 lb. How many mg 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.) 200 mg Correct Rationale: Convert lb to kg:STEP 1: What is the unit of measurement to calculate? kg STEP 2: Set up the equation and solve for X. 2.2 lb/1 kg = client's weight in lb/X kg 2.2 lb/1 kg = 88 lb/X kg X = 40 STEP 3: Round, if necessary. STEP 4: Reassess to determine whether the conversion to kg makes sense. If 2.2 lb = 1 kg, it makes sense that 88 lb = 40 kg. Calculate Dose: STEP 1: What is the unit of measurement to calculate? mg STEP 2: Set up the equation and solve for X. mg x kg/dose = X 5 mg x 40 kg = 200 mg STEP 3: Round, if necessary. STEP 4: Reassess to determine whether the amount to administer makes sense. If the provider prescribed cefpodoxime 5 mg/kg/dose and the client weighs 40 kg, it makes sense to administer 200 mg per dose. The nurse should administer cefpodoxime 200 mg PO every 12 hr. InCorrect Rationale: Convert lb to kg:STEP 1: What is the unit of measurement to calculate? kg STEP 2: Set up the equation and solve for X. 2.2 lb/1 kg = client's weight in lb/X kg 2.2 lb/1 kg = 88 lb/X kg X = 40 [Show More]

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