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29 Cards in this Set
- Front
- Back
Sensitivity
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Sensitivity =a /(a + c)
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Specificity
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Specificity =d /(b + d)
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Positive predictive value
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PPV =a /(a + b)
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Negative predictive value
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NPV =d /(c + d)
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Relative risk
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RR =[a/(a + b)] / [c/(c + d)]
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Attributable risk
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AR = [a /(a+b)] - [c /(c+d)]
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Hardy-Weinberg equilibrium
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p2 + 2pq + q2 = 1
p + q = 1 |
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Henderson-Hasselbalch equation
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pH = pKa + log [(HCO3-) /(0.03PCO2)]
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Volume of distribution
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Vd = (amount of drug in the body) / (plasma drug concentration)
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Clearance
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CL = (rate of elimination of drug) /
(plasma drug concentration) |
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Half-life
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t1⁄2 = (0.7 × Vd) / (CL)
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Loading dose
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LD = ([ ]p ×Vd) / F
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Maintenance dose
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MD = ([ ]p ×CL) / F
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Cardiac output
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CO = (rate of O2 consumption) / (arterial O2 content − venous O2 content)
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Cardiac output
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CO = stroke volume × heart rate
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Mean arterial pressure
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MAP = cardiac output × total peripheral resistance
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Mean arterial pressure
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MAP = 1⁄3 systolic + 2⁄3 diastolic
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Stroke volume
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SV = end diastolic volume − end systolic volume
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Ejection fraction
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EF = (stroke volume / end diastolic volume) x 100
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Resistance
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R = driving pressure / flow
R = [8η (viscosity) × length] / (π r4) |
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Net filtration pressure
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Pnet = (Pc − Pi) − (πc − πi)
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Glomerular filtration rate
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GFR = (U of inulin x V) / P of inulin
C of inulin = (U of inulin x V) / P of inulin |
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Effective renal plasma flow
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ERPF = (U of PAH x V) / P of PAH
C of PAH = (U of PAH x V) / P of PAH |
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Renal blood flow
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RBF = RPF / (1 − Hct)
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Filtration fraction
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FF = GFR / RPF
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Free water clearance
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CH2O = V − Cosm
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Physiologic dead space
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VD = VT x [(PaCO2 − PeCO2) / PaCO2]
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O2 consumption
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O2 con = CO (arterial O2 - venous O2)
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Collapsing pressure
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CP = 2 (Tension) / Radius
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