Appendix B: Ventilation parameters
English 173
Parameter
Valve Ventilation and Mouthpiece
Circuit
Leak Ventilation
Setting
AC
V
P(A
)C
V
PS
P-
SIM
V
V-
SIM
V
CP
AP
(S
)T
P(A
)C
CP
AP
iV
AP
S
Ti Min
(sec)
PS
0.2 to 4.0 [0.2]
(S)T, iVAPS
0.1 to 4.0 [0.2]
Ti Min is fixed at:
•
0.2 for P-SIMV, V-SIMV,
and CPAP (valved)
•
0.1 for CPAP (leak)
Ti Max
(Maximum
Inspiration Time)
(sec)
Adult: 0.3 to 4.0 [1.5]
Paed: 0.3 to 4.0 [0.8]
Ti Max is fixed at:
•
The lesser of
( (2/3) x (60/f) ) or 4 for
P-SIMV and V-SIMV
•
4 for CPAP (leak)
•
3 for CPAP (valved) Adult
•
1.5 for CPAP (valved)
Paediatric
Pt Height
Adult:
cm: 110 to 250 [175]
inches: 44 to 100 [70]
Target Pt
Rate
8 to 30 [15]
Target Va
(L/min)
1 to 30 [5.2]
*The International ventilator standard indicates that Paediatric patient type is intended to be used for a patient receiving less
than 300 mL, however Astral permits adjustment of ‘Vt’ setting parameter up to 500 mL for cases where ‘Vt’ is set such that it
compensates for leak in the breathing circuit.
WARNING
ResMed does not recommend 500 mL as the upper limit for the pediatric tidal volume use;
however, clinicians may choose this upper limit based on their clinical determination.
Summary of Contents for Astral 100
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