Nursing math

Question

The recommended dose for Vancocin is 40mg/kg/day. a person weighs 246 pounds and is to receive the medication every 6 hours. How many mg can the person receive per day? How many mg can the person receive per dose?

Answer 1

The person weight 246/2.2 = 111.82 kg

 

40 mg        x mg

--------  = --------

1 kg          111.82 kg

 

x = 40(111.82) = 4472.8 mg total received per day

 

Every 6 hours mean 4 times a day

 

So per dose patient receives 4472.8 / 4 = 1118.2 mg

Answer 2

I would change the original dose to lb

 

40mg/kg/day

 

1kg = 2.2lb

 

so 40mg/2.2lb/day

 

now 2.2 lb = 40mg per day

 

 246lb multiply by 40mg and divide by 2.2 lb therefore, 246 x 40 = 9840mg and 9840/2.2 = 4472.7mg per day or

 

4472.7/4 = 1118.1mg per dose