Appendix
63
12
IMT Analytics AG
12.2.5 Ventilation values
Measurement parameter Designation Units of measurement
Positive end
expiratory pressure
PEEP
mbar, bar, inH
2
O, cmH
2
O,
psi, Torr, inHg, mmHg,
hPa, kPa
Mean pressure Pmean
Maximum pressure Ppeak
Plateau pressure Pplateau
Pressure amplitude Delta P
Minute volume
Expiration
Ve
L/min, mL/min, cfm, L/s,
mL/s
Minute volume
Inspiration
Vi
Inspiratory peak flow PF Insp.
Expiratory peak
flow
PF Exp.
Expiratory volume Vte mL, L, cf
Inspiratory volume Vti mL, L, cf
Ventilation rate Rate Breaths/min
Inspiratory/expiratory ratio I:E -
Expiratory time Te s
Inspiratory time Ti s
Compliance Cstat mL/mbar, L/mbar, mL/
cmH
2
O, mL/cmH
2
O
12.2.6 Conversion factors
1 mbar equals 0.001 bar
100 Pa
1 hPa
0.1 kPa
0.75006 torr (760 torr = 1 atm.)
0.75006 mmHg (at 0°C)
0.02953 inHg (at 0°C)
1.01974 cmH
2
O (at 4°C)
0.40147 inH
2
O (at 4°C)
0.01450 psi, psia
1 bar equals 1000 mbar
0.1 Pa
1000 hPa
100 kPa
750.06 torr (760 torr = 1 atm.)
750.06 mmHg (at 0°C)
29.53 inHg (at 0°C)
1019.74 cmH
2
O (at 4°C)
401.47 inH
2
O (at 4°C)
14.50 psi, psia