Hamilton G5 - Page 446

C-30 624074/07
CASV
®
(Adaptive Support Ventilation)
Performance specifications
Response time (90% of steady
state)
< 1 min (typical)
Overshoot/undershoot < 20%
Maximum pressure change
per breath
2 cmH
2
O
Lung-protective rules
Maximum Vt Depends on high Pressure alarm
limit, Vt alarm limit and volume/
pressure ratio (V/P) always
< 22 x IBW. Inspiration is aborted
in mechanical breaths as soon as
volume is exceeding 1.5*Vt high
alarm limit.
Minimum Vt 4.4 x IBW
Maximum machine rate The maximum rate in ASV is the
smallest value of the following
condition:
- 60 b/min
- 23 b/min*%MV/100 /
(Weight
≥ 30 kg)
- 20/RCexp
Minimum target rate 5 to 15 b/min
Maximum Pinsp High Pressure alarm limit –
10 cmH
2
O – PEEP
Minimum Pinsp 5 cmH
2
O above PEEP/CPAP
Minimum inspiratory time (TI) 0.5 s or RCexp, whichever
is longer
Maximum inspiratory time (TI) 2 s
Minimum expiratory time (Te) 2 x RCexp
Maximum expiratory time (Te) 12 s
I:E range 1:4 to 1:1
Table C-5. ASV technical data