Given weight: 118lb= 53.5 kg
Frequency: 12 hourly
Ordered 90 mg/kg
53.5 kg=?
53.5*90/1=4815mg (4.8 gm)
a)4815 mg of Foscavir will be administered
b)Given 12 mg/ml
Then 4815 mg=??
4815*1/12 =401.25 ml will be administered per dose
c)Flow rate: Total volume*15/Total hour*60
=401.25*15/12*60
=8.3 that is 8 drops /minute
Now
8=401.25*15/1*60
=12.5 ml/hour
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