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Mech. Vent. wk 3-4
RT
Question | Answer |
---|---|
How do you find Vt | Flow * IT |
How do you find the flow | Vt / IT |
How do you find the IT | Vt / Flow |
Formula for Dynamic Compliance, Cdynm | Cdynm= Vt/ PIP-PEEP |
Formula for Static Compliance, Cstat | Cstat= Vt/ Pplat-PEEP |
Formula for Volume Loss | Tubing Compliance * Driving Pressure(PIP-PEEP) |
Formula for Airway Resistance | RAW= PIP-Pplat/Flow(Lps) |
Formula for Time Constant | RAW/Cstat(/1000) |
Minute Volume, VE | VE= RR * Vt |
Formula for Ca02 (adequate Arterial Oxygen Content) | (Hg*1.34*Sa02)+(Pa02 * 0.003) |
Normal Airway Resistance (RAW) | nonintubated 0.6 - 2.4Intubated 5-10 |
I:E Ratio | ET/IT |
Factors that you can manipulate on Mech. Vent for 02 deficiency | Fi02, PEEP, IT |
Factors that you can manipulate on Mech. Vent for ventilatory deficiency | Vt & RR |