Can you please go through the calculations

Can you please go through the calculations workings step by step so, I understand how to do the calculations please? Below is the case scenario for the prescription writing exercise. It has been explained however, I still don’t understand. Case 2. Clara Jones, a 6 y.o. female, has been diagnosed with extensive impetigo. You will be treating her with Keflex 3 times a day for 7 days. She weighs 55 pounds. Please perform the calculation and write the prescription. You may omit the patient’s home address. Dose range for Cephalexin is “25 to 50 mg/kg per day in 3 to 4 divided doses” This is what the teacher said but, I still don’t understand it. So, can you please completely break it down for me? And also attach your references so I can look it up. Calculations Dose 25 to 50 mg/kg per day in 3 to 4 divided doses (Medscape 2022b) Pt weight: 55lbs/2.2= 25kg Daily dose:25kg x 30mg/kg= 750mg/daily Dose amount:750mg /3 = 250mg/ dose Conversion for volume: 250mg/5ml = 5mL/dose ( check resources for available suspensions, This happened to be the best, If I select a more diluted suspension The volume to be administered with each dose would be higher) Number of doses: 3 doses per day X 7 days = 21 doses Amount to dispense: 21doses x 5mL= 105mL ( you will mention that you will give few more cc extra because some is being left on the teaspoon, so you want the parent to have enough for the full treatment, so round up few extra cc) Thanks so much SCIENCE HEALTH SCIENCE NURSING PHARMACOLO NURS507

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