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Airway > Airway > Flashcards

Airway Flashcards

1
Q

Compliance

A

C=V/P

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2
Q

Compliance (lung& thorax)

A

Clt= Vt/Paw

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3
Q

What is average lung/thorax compliance?

A

100 ml/cmh2o

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4
Q

Compliant lung is….

A

Less pressure needed to fill

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5
Q

Non compliant lung

A

More pressure required

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6
Q

Normal compliance values individually…

A

200 ml/cmH2O

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7
Q

Separate compliance equation

A

1/Clt = 1/Cl + 1/Ct

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8
Q

Flow equation (V with circle on top)

A

V = V/t

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9
Q

Normal VO2 flow is…

A

242 ml/min

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10
Q

Normal VCO2 flow for patient…

A

194 ml/min

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11
Q

VO2 flow equation

A

W^.75 x 10

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12
Q

Respiratory quotient equation

A

VCO2/VO2

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13
Q

Normal respiratory quotient is ???

A

.8

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14
Q

VCO2 equation…

A

VCO2 = VO2 x R

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15
Q

Minute ventilation definition.

A

Total V of gas or each minute.

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16
Q

Minute ventilation (Ve) equation

A

Ve= Vt x f

Ve= minute ventilation
f = frequency 
Vt = tidal volume
17
Q

What is normal water vapor pressure in a patient? At 37*C?

A

47 mmHg

18
Q

Alveolar Ventilation definition

A

Total volume of gases flowing in/out of gas exchange each minute.

19
Q

PaCO2 = Alveolar CO2 pressure, normal in pt?

A

40 mmHg (+/- 4mmHg)

20
Q

Total gas in alveoli equation..

A

Ptot= Pbar

21
Q

Pbar = ???

A

Bar pressure of atm (737) - Ph2o (47mmHg)

22
Q

FiO2 equation?

A

O2 (L) + Air(L)(.21)/Total gas flow(L)

23
Q

Anatomic Deadspace for each patient is related to…

A

2.2ml/kg or 1m/lb

24
Q

Volume of anatomic deadspace equation =

A

VdAnat = VdAnat x f

25
Q

Minute ventilation definition

A

Total gas moving in/out of lungs

26
Q

Minute ventilation equation =

A

Ve= Va + VdAnat

27
Q

FRC = ???

A

35ml/kg

28
Q

Ideal body weight equations

A

Male - W = 50 + (H-60)x2.3

Female - W= 45.5 + (H-60)x2.3

29
Q

BSA Equation

A

BSA = H^.725 + W^.425 x .007184

30
Q

BMI Equation =

A

BMI= W/H^2

31
Q

What are ranges for BMI?

A 
18.5-25 = Normal
>25-30 = Overweight
>30-40 = Obese
>40 = Morbidly Obese
32
Q

Volume of a cylinder

A

V = pi x r^2 x h

33
Q

Ohms Law

A

V=IR

V= Volt
I= current (A)
R= Resitance (Ohm)
34
Q

Power equation

A

P = VxI

Watt

35
Q

MAP

A

(2D + S) / 3

Airway (1 decks)

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