Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Normal Size Small Size show me how

# Step 1 1.10.12

### Key Equations and Relations

Question | Answer |
---|---|

How do you calculate sensitivity? | =TP/(TP+FN) |

How do you calculate specificity? | =TN(TN+FP) |

How do you calculate positive predictive value? | =TP/(TP+FP) |

How do you calculate negative predictive value? | =TN(TN+FN) |

How do you calculate Relative risk? | = [a/a+b]/[c/c+d] |

How do you calculate attributable risk? | =[a/a+b]-[c/c+d] |

How do you calculate number needed to treat? | 1/absolute risk reduction |

How do you calculate number needed to harm? | 1/attributable risk |

How do you calculate Hardy Weinberg equilibrium? | p^2 + 2pq+q^2= 1 p+q=1 |

How do you calculate the henderson Hasselbach equation for CO3 and CO2? | pH=pKa+log[[HCO3-]/0.03 PCO2]] |

How do you calculate volume of distribution? | = amount of drug in body/plasma drug concentration |

How do you calculate ? | =rate of elimination of drug/plasma drug concentration |

How do you calculate Half life? | =0.7 x Vd/ CL (where Vd is volume of distorbution) |

How do you calculate loading dose? | LD=Cpx Vd/F |

How do you calculate maintenance dose? | MD= Cp x CL/F |

How do you calculate Cardiac output? | =rate of O2 consumption/ (arterial O2 content- venous O2 content) |

How do you calculate cardiac output via SV? | CO=SV x HR |

How do you calculate mean arterial P? | MAP=CO x total peripheral resistance. MAP= 1/3 systolic +2/3 distolic |

How do you calculate dstroke volume? | SV= End diastolic volume - end systolic volume |

How do you calculate ejection fraction? | EF=stroke volume/end diastolic volume x 100 |

How do you calculate resistance? | =driving pressure/ flow= 8 (nu=viscosity) x length/pi r^4 |

How do you calculate Net filtration pressure? | = [(Pc-Pi) - (pic-pii)] |

How do you calculate glomerular filtration rate? | GFR=U inulin cx V/P inulion= C inulin |

How do you calculate glomerular filtration rate via osmotic forces? | GFR= Kf[(Pgc-Pbs) - (piGC- piBS)] |

How do you calculate effective renal plasma flow? | ERPF= Upah x (V/Ppah) = Cpah |

How do you calculate renal blood flow? | RBF= RPF/(1-Hct) |

how do you calculate the filtration fraction? | FF=GFR/RPF |

How do you calculate physiological dead space? | Vd=Vt x [(PaCO2-PeCO2)/(PaCO2)] |

Created by:
tjs2123