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BiLevel Ventilation and Graphics - TL Forrette & Associates
BiLevel Ventilation and Graphics - TL Forrette & Associates
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Overview Of Ventilator Graphics<br />
Terry L. Forrette, M.H.S., RRT<br />
Normal Compliance<br />
Expiration<br />
600 mL<br />
Expiration<br />
Volume<br />
Inspiration<br />
Volume<br />
Inspiration<br />
Angle is relative to<br />
compliance<br />
Pressure<br />
Pressure<br />
20 cm H 2 O<br />
C = volume ÷ pressure<br />
C = volume ÷ pressure<br />
= 600 ÷ 20<br />
= 30 mL/cmH 2 O<br />
Decreased Compliance<br />
What Happened To Compliance ?<br />
Expiration<br />
600<br />
Volume<br />
400<br />
Inspiration<br />
Volume<br />
C = volume ÷ pressure<br />
= ?<br />
Pressure<br />
40<br />
C = volume ÷ pressure<br />
= 400 ÷ 40<br />
= 10 mL/cm H 2 O<br />
Pressure<br />
15<br />
Compliance Changes<br />
Assessing Airways Resistance<br />
Volume<br />
A<br />
B<br />
Volume<br />
Expiration<br />
Inspiration<br />
Pressure<br />
Pressure<br />
www.tlforrette.com<br />
mail@tlforrette.com<br />
Wisdom is knowledge applied<br />
5<br />
TL Forrette & Associates<br />
(985) 624-9640
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