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26 Cards in this Set
- Front
- Back
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Normal Range GFR
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120-125 ml/min
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Filtration Fraction
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FF=GFR/RPF
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RPF =
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RPF= (1-HCT)xRBF
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GFR
2 Equations |
GFR = Kf [(Pgc - Pbc) - (OPgc - OPbc)]
GFR = Kf (NFP) NFP= net filtration pressure |
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Filtered Load
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FL = GFR (P)
P=plasma concentration of substance |
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Excretion rate
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ER = U(V)
U=urine concentration V= rate of urine formation |
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If substance x is neither secreted nor reabosrbed than what does GFR =
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GFR- U(V)/P
P= plasma concentration of substance |
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Inulin Clearance
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Cin = UinV/Pin
inulin clearance = GFR |
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Creatine Clearance
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Creatinine clearance ~=GFR
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BUN:Cr normal ratio
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10-15
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Clearance
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C = UxV/Px
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Clearance Ratio
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Cx/Cinulin = clearance ratio
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Free water clearance
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Ch20 = V-Cosm
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Transport Rate
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Tx = FL - ER
+Tx = some substance is reabsorbed -Tx = some substance is secreted into filtrate |
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Fractional Excretion
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FE = ER/FL
FE< 1 = some substance is reabsorbed FE> 1 = some substance is secreted into filtrate |
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Filtered Load of Calcium
and Normal Value for Pca |
FLca = GFR (Pca)(0.6)
Pca = 0.1 normalling |
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Henderson Hasselback
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pH = pKa + log[A-]/[HA]
When [A-] = [HA], then pH=pKa |
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Henderson hasselback for HCO3- and PCO2
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pH = 6.1 + log[HCO3]/ (0.03x PaCO2)
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MAP
2 equations |
MAP = diastolic + 1/3 PP
MAP = CO x TPR |
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Net filtration rate
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NFP = Pgc - Pbc - OPgc
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Renal Plasma Flow
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RPF ~= Cpah
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Anion Gap
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AG = [Na+] - [Cl-] - [HCO3-]
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Normal pH in plasma
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pH=7.4 +/- 0.05
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Normal plasma HCO3-
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24 +/- 2mEq/L
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Normal plasma PCO2
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40 +/- 5mmHg
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Mass Action Law
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10mmHg decrease in PCO2, HCO3- decreases by 2
10 increase in PCO2, HCO3- increases by 1 |
