Can someone help me do 1 problem so I can model it for similar problems of this kind. I am not sure what to do. Please step by step.1. Order: Amoxicillin suspension 40 mg/kg/day in 3 divided doses. Supply: bottle labeled 125 mg/5ml. Childs weight is 15 kg. What is the quantity to administer? _______ml.Do I do 5/125 = x/600. I got the 600 by multiplying 15kg by 40 mg. ??? I got 24 ml for the day and then divided into 3 doses its 8ml. Is that correct?Can anyone give me a formula that can help me determine the answer. Thanks in advance to anyone who chooses to help me with this. D
serenity1 266 Posts Specializes in labor & delivery. Has 7 years experience. Apr 10, 2009 I got the same thing-8 ml per dose. The way I would do it is:15 kg x 40mg = 600 mg600 mg per dose / 3 doses =200 mg125 mg:5 ml = 200 mg:X ml--ratio problem-- multiply inside numbers 5x200=1000 divide by remaining number 125 = 8mlOutside numbers multiplied should equal inside numbers multipliedHope I explained it ok. I can show it easier than typing it out. This is how I learned.
Daytonite, BSN, RN 4 Articles; 14,603 Posts Specializes in med/surg, telemetry, IV therapy, mgmt. Has 40 years experience. Apr 10, 2009 Order: Amoxicillin suspension 40 mg/kg/day in 3 divided doses.Supply: bottle labeled 125 mg/5ml. Childs weight is 15 kg. What is the quantity to administer? _______ml.By Dimensional Analysis: 40 mg/kg (dose desired) x 15 kg (child's weight)/3 (number of doses per day) x 5 mL/125 mg (dose on hand) = 8 mL (amount to administer per dose)
