(S)T Mode - Spontaneous Ventilation With Backup Rate - ResMed Astral Series Clinical Manual

Ventilation modes

(S)T mode - Spontaneous Ventilation with backup rate

(S)T is a bilevel ventilation mode delivering pressure-supported spontaneous breaths:
-
Inspiration is either initiated by the ventilator at a set rate (time-triggered breath) or the patient
(spontaneous-triggered breath). Spontaneous-triggered breaths re-schedule the next
time-triggered breath. Resp. rate and Trigger can be set to Off, but not at the same time. When
Trigger is set to Off, the mode name will be shown on the Information bar as T. When Trigger is
active, and Resp.rate is set to Off, the mode name will be shown on the information bar as S.
-
End of inspiration (switch from inspiration to expiration) is controlled by the patient
(spontaneous-cycled breath) between Ti Min and Ti Max.
Parameter
Resp. rate (per min)
EPAP (cmH
O)
2
IPAP (cmH O)
2
Trigger
Rise Time (msec)
Ti Min (sec)
Ti Max (sec)
Cycle (%)
76
Setting
Adult: Off, 2 to 50 [15]
Paed: Off, 5 to 80 [15]
2 to 25 [5]
Adult: 4 to 50 [12]
Paed: 4 to 50 [12]
Off, Very Low to Very High [Medium]
Min, 150 to 900 [200]
0.1 to 4.0 [0.2]
Adult: 0.3 to 4.0 [1.5]
Paed: 0.3 to 4.0 [0.8]
5 to 90 [25]