Pharm Equations

Question 1

Half life equation

Answer 1

T1/2 = 0.693 / Kel

Question 2

Maintenance dose equation

Answer 2

Maint dose = [(Cl) (Cp ss avg) (Tau)] / [(S)(F)]

Question 3

clearance equation

Answer 3

Cl = [(S)(F)(dose/T)] / (Cp ss avg)

Question 4

supplemental loading dose equation

Answer 4

supp load dose = [(Vd)(Cp d - Cp i)] / (S)(F)

Question 5

amount of drug absorption equation

Answer 5

amount abs = (S)(F)(dose)

Question 6

loading dose equation

Answer 6

LD = [(Vd)(Cp)] / [(S)(F)]

Question 7

dose of diff dose form equation

Answer 7

diff dose form dosage = [amount (mg) abs current form] / [(S)(F) of new dose]

Question 8

concentration in plasma equation

Answer 8

Cp = [(S)(F)(dose)] / Vd

Question 9

Rate elimination constant eq

Answer 9

Kel = Cl / Vd

Question 10

female IBW equation

Answer 10

IBW f = 45kg + (2.3 x #in > 5 ft)

Question 11

IBW Male Equation

Answer 11

IBW m = 50kg + (2.3kg x #in >5ft)

Question 12

Adjusted Body Wt Equation & When to Use It

Answer 12

-for pts > 30-40% IBW

AdjBW = [0.4 x (ABW - IBW)] + IBW

Question 13

Creatinine Clearance Equation

Answer 13

male = (140 - age) x IBW (in kg) / (72 x SCr)
female = same equation x 0.85