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28 Cards in this Set
- Front
- Back
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Sensitivity
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Sensitivity = TP / (TP + FN)
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Specificity
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Specificity = TN / (TN + FP)
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Positive predictive value
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PPV = TP / (TP + FP)
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Negative predictive value
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NPV = TN / (TN + FN)
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Relative risk
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R = [a / (a+b)] / [c / (c+d)]
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Attibutable risk
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AR = [a / (a+b)] - [c / (c+d)]
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Number needed to treat
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1/absolute risk reduction
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Number needed to harm
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1/attributable risk
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Hardy-Weinberg equilibrium
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p^2 + 2pq + q^2 = 1
p + q = 1 |
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Henderson-Hasselbach equation
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pH = pKa + log ([HCO3]/0.03*PCO2)
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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 = Cp * Vd/F
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Maintenance dose
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MD = Cp * 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 (physics eq.)
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CO = HR * SV
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Mean arterial pressure
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MAP = cardiac output * total peripheral resistance
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) * 100
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Resistance
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R = driving pressure / flow = [8η (viscosity) * length] / (πr^4)
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Net filtration pressure
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Pnet = [(Pc - Pi) - (πc - πi)]
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Glomerular filtration rate (conc. eq.)
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GFR = U(inulin) * [V / P(inulin)] = C(inulin)
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Glomerular filtration rate (pressure eq.)
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GFR = Kf [(P(gc) - P(bs)) - (π(gc) -π(bs))]
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Effective renal plasma flow
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ERPF = U(PAH) * [V / P(PAH)] = C(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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Physiologic dead space
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V(D) = V(T) * (PaCO2 - PeCO2) / PaCO2
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