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28 Cards in this Set
- Front
- Back
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sensitivity formula
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sensitivity= a/(a+c)
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specificity forumula
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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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p^2+2pq+q^2=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 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= (0.7Vd)/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 consumption)
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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= 1/3 systolic + 2/3 diastolic
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mean arterial pressure
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MAP= CO * total peripheral resistance
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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) = (8ŋ*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
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GFR= Uinulin * (V/Pinulin) = Cinulin
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glomerular filtration rate
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GFR= Kf[(PGC - PBS) - (πGC - πBS)]
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effective renal plasma flow
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ERBF= UPAH * (V/UPAH) =CPAH
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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/RBF
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free water clearance
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CH20=V - COSM
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physiologic dead space
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Vd=VT * (PaCO2 - PeCO2) / PaCO2
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