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Equations
Pharmacy calculations
27
Other
Not Applicable
03/11/2014
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Term

BMI

  • Underweight
  • Normal
  • Overweight
  • Obese
 Definition
  • <18.5
  • 18.5-25
  • 25-30
  • >30
Term
Dehydration labs
 Definition
BUN:sCR ratio >20
Term
Cockcroft-Gault (Female)
 Definition

(140-Age)*Wt  (0.85)

72*sCr

 
Term

IBW

  • (males)
  • (feamles)
 Definition
  • 50kg + 2.3kg/inch above 60
  • 45.5kg + 2.3kg/inch above 60

"think 2 3 4 5"
Term

When to use

  • Actual BW
  • Ideal BW
  • Adjusted BW
 Definition
  • Underweight
  • Normal
  • Overweight
Term
Adj BW
 Definition
IBW + 0.4(TBW-IBW)
Term
Daily fluid requirement
 Definition
1500ml (for the first 20kg) + (20ml/additional Kg)
Term
Nitrogen balance
 Definition

Protein(g)

6.25

 
Term
Isotonicity E
 Definition

(58.5)*(i)  

(MW)*(1.8)

 
Term
ºF -> ºC
 Definition
(F-32)÷(9/5)
Term
mEq
 Definition
mmols x Valence
Term
Anion gap
 Definition
Na - Cl - HCO3
Term
Bioavailability (F)
 Definition

AUCIV x Dosepo

AUCpo   DoseIV

 
Term
Cacorrected
 Definition
Ca + (4-alb)0.8
Term
VD
 Definition

F*Dose

Kel*AUC

 

 

 
Term
Apparent VD
 Definition

VD = Dose      

F       Kel*AUC

 

 

 

 
Term
Statistical Risk
 Definition
# of unfavorable/# of subjects
Term
Relative Risk
 Definition
Risk in treatment/Risk in control.
Term
Relative Risk Reduction
 Definition
1-RR
Term
Absolute risk reduction
 Definition
(% risk in control) - (% risk in treatment)
Term
Number needed to treat
 Definition

   1   

ARR
Term
Cardiac Index (CI)
 Definition
CO/BSA
Term
LDL
 Definition
TC - HDL - (TG/5)
Term

ANC

 Definition

WBC(%segs + %bands)
Term
Granulocytes
 Definition
WBC(% Band + Seg + Basophil + Eosinophil)
Term
PH
 Definition

PH = PKa + log [b/a]

 

(log 1 = 0.   log 10 = 1 )
Term
E value
 Definition

  (58.5*I)

 (MW*1.8)

 

1: 1

2: 1.8

3: 2.6
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