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1. Primary FRCA > Calculations > Flashcards

Calculations Flashcards

1
Q

Bioavailability

A
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2
Q

Affinity

A
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3
Q

Dissociation constant

A
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4
Q

Vd

A
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5
Q

time constant (tau)

A

Time constant

0.69

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6
Q

t 1/2 (half life)

A

0.693 x tau
or
0.693 x (Vd/cl)

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7
Q

Loading dose

A

Vd x Plasma conc.

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8
Q

Maintenance dose

A

Plasma conc. x Cl

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9
Q

Pressure

A

Pressure = force / area

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10
Q

Poiseuille Equation

A
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11
Q

Reynolds number

A

Reynolds number =
velocity x pressure x tube diameter / viscosity

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12
Q

Boyle’s Law

A

PV = K

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13
Q

Charle’s Law

A

V/T = K

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14
Q

3rd Gass Law (guy-lussac)

A

P/T = K

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15
Q

Combined gas law

A

PV / T = K
or
PV = nRT

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16
Q

Power

A

Power (watts) = VI = I(squared) R

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17
Q

Charge

A

Q= amperes x seconds
charge = Voltage x Capacitance

charge = coulombs
capacitance = farads

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18
Q

Capacitance

A

Capacitance (C) = Q/V
Farads

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19
Q

Defibrillator stored energy

A

stored energy = 1/2 x CV(squared)
or
1/2 QV

20
Q

Resistors

A
21
Q

Tension (tube)

A

P = T/r

22
Q

Tension (sphere)

A

P = 2T / r

23
Q

Work done

A

Work done = force x distance

24
Q

Humudity

A

Relative humidity = actual vapour pressure / saturated vapour pressure

24
Q

Total blood volume

A
24
Q

Starling Forces

A
24
Q

Stroke Volume

A

SV = EDV - ESV

24
Q

Plasma osmolality

A
24
Q

Nernst Equation

A
25
Q

Ejection fraction

A

SV / EDV

26
Q

Cardiac Output

A

CO = HR x SV

27
Q

Cardiac Index

A

CO/BSA (body surface area)

28
Q

Systemic Vascular Resistance

A
29
Q

Mean arterial blood pressure

A

MAP - CVP = CO x SVR

30
Q

Fick Method

A
31
Q

Ventilation

A
32
Q

Alveolar Gas Equation

A
33
Q

Bohr Equation

A
34
Q

Compliance

A
35
Q

Venous to arterial shunt

A
36
Q

Oxygen content

A
37
Q

pK

A
38
Q

Henderson-Hasselbach

A
39
Q

Cerebral perfusion pressure

A

CPP = MAP - (ICP+CVP)

40
Q

Clearance

A

clearance = Vd x K
clearance = flow rate x extraction ratio

41
Q

Elimination

A

R elim = concentration x clearance
R elim = Vd x K

42
Q

Bernoulli equation

A

1. Primary FRCA (2 decks)

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