# Equations

rename
ephender's
version from
2015-05-04 18:54

## Section 1

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

Sensitivity | TP/(TP+FN) |

Specificity | TN/(TN+FP) |

Positive Predictive Value | TP/(TP+FP) |

Negative Predictive Value | TN/(FN+TN) |

Odds Ration (case control) | (A/C)/(B/D) | AD/BC |

Relative Risk | (a/(a+b))/(c/(c+d)) |

Attributable Risk | (a/(a+b)) - (c/(c+d)) |

Number Needed to Treat | 1/ ARR |

Number Needed to Harm | 1/ AR |

Hardy Weinberg Equilibrium | p^2+ 2pq+q^2 = 1 | p + q = 1 |

## Section 2

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

Volume of Distribution | amount of drug in body/ [Drug]plasma |

Half Life | (0.7XVd)/CL |

Drug Clearance | Rate of Elimination / [Drug]p = Vd X Ke (elimination constant) |

Loading Dose First Aid | (Cp X Vd )/ F | |

Maintenance Dose First Aid | (Cp X CL X t ) / F | |

LD DIT | Css X Vd |

MD DIT | Css X CL |

## Section 3

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

Cardiac Output | CO = Rate of O2 Consumption/ (O2 artery - O2 Vein) | CO = SV X HR |

Mean Arterial Pressure | CO X TPR | 2/3 Diastolic + 1/3 Systolic |

Stroke Vlume | EDV- ESV |

Ejection Fractoin | SV/EDV | (EDV-ESV)/EDV |

Resistance | Driving Pressure (P)/ flow (Q) | (Viscosity (sn) X Length)/ pir^4 |

## Section 4

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

Net Filtration Pressure | [(Pc - Pi) - (piC - piI)] |

Renal Clearance | UxV/Px |

GFR | Uinulin X V/Pinulin = Cinulin | Kf[Pgc-Pbs)-(piGC-piBS)] |

Effective Renal Plasma Flor | Upah X (V/Ppah) |

Renal Blood Flow RBF | RPF/1-Hct |

Filtration Fraction | GFR/RPF |

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