usmle gold: misc Flashcards Preview

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Flashcards in usmle gold: misc Deck (64)
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31

DCC

18q
Colon & Stomach CA

32

DPC

18q Pancreatic CA

33

NF-2

22q Neurofibromatosis type 2 = bilateral acoustic neuroma

34

Resistance in Series:

Add all

35

Resistance in Parallel:

Invert the answer

36

Filtration Fraction =

GFR/RPF

37

GFR:

Glomerular Filtration Rate

38

RPF:

Renal Plasma Flow

39

Filtered Load =

GFR x [Conc]

40

Excretion Rate =

[Urine] x VelUrine

41

Clearance =


[Urine] x Vel(Urine) / [plasma]
or
Excretion / [Plasma]

42

Clearance of PAH =

[ERPF]

43

ERPF:

Eff renal plasma flow

44

Renal Blood Flow =

ERPF / 1 - Hct

45

Free Water Clearance =

VelUrine - Urine(osm) x Vel(urine) / P(osm)

46

CO =

HR x SV

47

CO =

O2(consumed) / PulmonaryA VO difference

48

Pulse Pressure =

Systolic – Diastolic

49

MAP =

Diastolic + 1/3 Pulse Pressure

50

CO =

MAP / TPR

51

MAP =

TPR x CO

52

F =

P1− P2 / R

53

PAO2 =

(760 – 47) FO2 - (PACO2 / R)

FO2 = [O2]
PACO2 = Alv. Press. Of CO2
R = Resp. Exchange Ratio
CO2 produced / O2 consumed
≅ .8 or 1

54

Flow =

O2 consumed / AtoVO difference

55

Velgas Diffusion =

(Area / thickness) x Gas Diffusion Constant x Difference of Partial Pressure

56

VentTot =

VentTidal x #of Respirations

57

VentAlv =

(VentTidal – VentDead) x # of Respirations

58

Compliance =

Vol / Press

59

P =

Tension / Radius

60

1.0 =

Va/Q