ResMed Astral Series Clinical Manual page 153

Accuracy of controls
Parameter
Trigger (inspiratory trigger)
Inspiratory Pressure Trigger
Trigger sensitivity – Vented
Trigger sensitivity –
Mouthpiece
Rise Time
Flow Shape
Ti Min
Ti Max
Apnoea Interval
Apnoea Resp Rate
Apnoea Ti
Apnoea Vt
Apnoea flow shape
146
Range
(A)CV, P(A)CV:
Off, 0.5 to 15 L/min
V-SIMV, PSIMV, PS, CPAP:
0.5 to 15 L/min
(A)CV, P(A)CV:
Off, Very Low to Very High
PS, P-SIMV, V-SIMV, CPAP:
Very Low to Very High
(S)T, P(A)C:
Very Low to Very High, Off
CPAP:
Very Low to Very High
(A)CV, P(A)CV, PS
Off, Low to High, Touch
Min, 150 to 900 msec
100 (Constant), 75, 50, 25%
PS:
0.2 to 4.0 sec
(S)T, iVAPS:
0.1 to 4.0 sec
0.3 to 4.0 sec
Adult: 15 to 60 sec
Paed: 5 to 30 sec
Adult: 4 to 50 bpm
Paed: 12 to 80 bpm
When Volume Breath
option is set to Ti.
If Apnoea Response is
(A)CV + Alarm:
0.3 to 3 sec
If Apnoea Response is
P(A)CV + Alarm:
0.2 to 5 sec
If Apnoea Response is
(A)CV + Alarm:
Adult: 100 to 2500 mL
Paed: 50 to 300 mL**
Constant
Resolution Accuracy
0.5 L/min N/A
N/A
N/A
N/A
50 ms N/A
N/A
Adult: 0.1 sec N/A
Paed: 0.05 sec
Adult: 0.1 sec N/A
Paed: 0.05 sec
1 sec ±0.5 s
1 bpm ±2%
Adult: 0.1 sec ±(20 ms + 5% of setting)
Paed: 0.05 sec
Adult: 10 mL Valved circuits:
Paed: 5 mL ±12 mL or 10%, whichever is greater
N/A