Home
Flashcards
Preview
Equations for CRT
Home
Get App
Take Quiz
Create
Automatically remove your image background. Try it now!
https://remove-image-background.com
Static Compliance
Alveolar minute ventilation
Estimated 1ml per lb of ideal body weight for V
D
Cardiac Output
Heart rate X stroke volume
Mean arteriol pressure
Mean
: 90
Monitors perfusion
Normal:120/80
Cerebral Perfusion Pressure
CPP=MAP-ICP
Normal: 70-90
Smoking History
Pack years= # of packs/day x # of years smoked
4 packs a day x 10 years equals 40 pack years
ETT size
Size= weight in kg divided by 10
Oral: 21-25 cm mark at lip
Nasal: 26-29 cm mark
Catheter size
8.0/2 =4x3 =12 french
Alveolar air equation
(FiO2 x 7) - (PaCO2 + 10)
50%= 300 torr
100% O2= 600 torr
The A-a Gradient
(A-aDO2)
A-aDO2 = PAO2 - PaO2
Arterial oxygen content
(CaO2)
CaO2 = (Hb x 1.34 x SaO2) + (PaO2 x .003)
Normal: 17-20%
Good PaO2, good Hb, Good SaO2 then answer is gonna be in high teens
Bad PaO2, Bad Hb, Bad SaO2 then answer is gonna be in low teens
Mixed venous oxygen content
(CVO2)
Bad arteriol
CVO2 = (Hb x 1.34 x SVO2) + (PVO2 x .003)
Normal: 14%
Arteriol- Venous oxygen content difference
C(a-V)O2
C(a-v)O2 = CaO2-CvO2
Normal:4-5%
Shunt equation
(Qs/Qt)
Calculate the percent shunt when the A-aDO2 is 300 torr and the C(a-v)O2 is 3.6 vol %!
For every 100 on the A-a gradient, add another 5% shunt to normal
Answer is 20%
Deadspace to tidal volume ratio
(V
D
/V
T
)
Duration of Flow
Air to oxygen Ratio
Total flow
Total flow=(flow meter setting x factor)
What is the total flow when a venti mask is set at 5 L/min and the dilution control is set at 28%?
Air/O2 entrainment ratio is 10:1 for 28%
Total flow factor is 11
5 x 11 = 55 L/min
Raw
(Peak pressure- Plateau pressure)/ flow L/sec
Automatically remove your image background. Try it now!
https://remove-image-background.com
Author
darrell2662
ID
186403
Card Set
Equations for CRT
Description
Equations
Updated
2012-12-01T20:10:36Z
Show Answers
Home
Flashcards
Preview