Eqs Flashcards
(27 cards)
Bioavailability
(AUCev/DOSEev)/(AUCiv/DOSEiv)
Plasma Clearance
Dose/AUC
Renal Clearance
fe*CLp
Oral Clearance
F*Dose/AUC
Hepatic Clearance
CLp - CLr
Blood Clearance
CLp/(Cb/Cp)
Drugs are secreted if
CLr > fu*GFR
Drugs are reabsorbed if
CLr < fu*GFR
Clearance
Vd*Kel
half-life
0.693/Beta
Concentration
Co*e^(-kt)
Tissue Volume
Vp*K12/K21
Plasma Concentration
Ae^(-alphat)+Be^(-betat)
Mean Transport Time (oral)
AUMC/AUC
Mean Transport Time (IV)
1/k
Mean Residence Time
MTTiv
Mean Arrival Time
MTTpo-MRT
AUCtn-tn+1
deltat*[Cpn+Cp(n+1)]/2
AUMCtn-tn+1
deltat[Cpntn+Cp(n+1)*t(n+1)]/2
Duration of Effect 1
(1/k)ln((1+Amin)/Amin)
[Amin = minimum Amount (g)]
Duration of Effect 2
(1/k)ln(Dose/(Cmin*Vd))
High E Drugs increase QH
Increases Cl& F and Decreases AUCiv & half-life
High E Drugs increase CLint
Decreases F and AUCoral
High E Drugs increase fub
Increases Vdp & half-life, and Decreases F & AUCoral