- #1
badtwistoffate
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fluid with 5mg/cm^3 of drug enters bloodsteam at 100cm^3/hr, drug is absorbed by body tissue or otherwise leaves the bloodstream at a rate proportional to the amount present with a rate constant of .4(hr)^-1.
so assuming the drug is always uniformly distrbuted throughout the bloodstream, the differential equation for the amount of the drug that is present at time t is:
What i have done is:
let D(T)=amnt of drug absorbned by the body, at time t (hrs), in mg
so i got dD/dt= rate in - rate out
i have the rate in=100(5) mg/cm^3 or 500 mg/cm^3
and rate out= D(t)/.4
so my equation is dD/dt= 500-D/.4 then i can just you separation of varibles...
what do you all think
so assuming the drug is always uniformly distrbuted throughout the bloodstream, the differential equation for the amount of the drug that is present at time t is:
What i have done is:
let D(T)=amnt of drug absorbned by the body, at time t (hrs), in mg
so i got dD/dt= rate in - rate out
i have the rate in=100(5) mg/cm^3 or 500 mg/cm^3
and rate out= D(t)/.4
so my equation is dD/dt= 500-D/.4 then i can just you separation of varibles...
what do you all think