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Vent. Calculations
Critical Care RSPT2255
| Term | Definition |
|---|---|
| Vt= | Ve/RR |
| PEAK FLOW= | Ve x (inspiratory (%) factor) |
| INSPIRATORY % FACTORS= (%:f) | 20:5 ; 25:4; 33:3 ; 50:2; 67:1.5; 80:1.25 |
| I:E RATIO= | (TOTAL inspiratory%: expiratory%) -{TOTAL inspiratory.=insp%+pause%}- {expiratory%= TOTAL insp-100%} |
| Ces= | VT/PRESSURE VTCorrected/Plat-PEEP VTCorrected= VTset-3(PIP-PEEP) |
| RAW= | PIP-Plat/FLOW (L/S) x 60sec.= (n) cm H2O/L/sec |
| A-aDO2= | PAO2-PaO2 PAO2= [(Pbar-PH2O)(.FiO2)]-[(PaCO2)(1.25)] |
| SHUNT %= Qs/Qt | Cco2-CaO2/Cco2-CvO2 Cco2=Hb x 1.34 x (1) + PAO2(.003) CaO2=Hb x 1.34 x (SaO2) + PaO2(.003) CvO2= Hb x 1.34 x (SvO2) + PvO2(.003) |
| Bohr Equation= Vd/Vt= | PaCO2-PECO2/PaCO2 (Normal: 20-40%) |
| ΔSIMV to get set PaCO2= | RR x PaCO2= RR* x PaCO2* HAVE=WANT |
| ΔFiO2 to get set PaO2= | a/A=a*/A* HAVE=WANT *PA02=find *FiO2 |
| frequency=f= | Ve/Vt |
| Ve= | Flow/insp%Factor |
| ΔParameter line up= | f/VT/Ve/Insp%Factor/Flow |
Created by:
katt5769necole
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