Covidien Newport HT70, Operator'S Manual

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Explanation of Modes and Controls
10-2 Operator's Manual
10.3
SPONT Mode
(Spontaneous Ventilation)
In SPONT mode, all breaths are spontaneous breaths that are flow/pressure-triggered by the
patient. The user can adjust both PEEP/CPAP and Pressure Support (PS) levels. Reference
PS on
page 10-2 for a description of how this breath type works.
When PEEP/CPAP is set above 0, the ventilator mode is CPAP (without PS) or Bi-level Positive
Airway Pressure (with PS). Ensure that Ptrig or Flow trig is set so the ventilator detects all sponta-
neous patient efforts.
The Low Pressure alarm limit is inactive in SPONT mode. However, users can preset this parameter
for future A/CMV or SIMV operation.
As with all ventilator operating modes, Backup Ventilation is activated if the BUV linked alarm is
violated.
10.4
NIV
(Noninvasive Ventilation)
The Newport™ HT70 Ventilator can be used for noninvasive ventilation in all modes. Go to the
More screen, and touch the
NIV button to toggle on noninvasive.
When NIV is on, the following features are activated to assist with noninvasive ventilation:
•
Bias flow is increased to 10 L/min and can be adjusted as needed from 3-30 L/min
•
The Low Minute Volume alarm can be turned off (Alarms screen)
•
The Low Pressure alarm can be set closer to the base pressure (1 cmH
2
O /mbar above baseline)
(Alarms screen)
•
The High Minute Volume alarm range is expanded to 80 L/min
10.5
PS
(Pressure Support)
Pressure Support (PS) spontaneous breaths are available to support a patient’s spontaneous
breathing efforts in SIMV and SPONT modes. During each Pressure Support breath, the ventilator
elevates and then maintains patient airway pressure at a pressure equal to Pressure S
PEEP throughout inspiration. Breaths are cycled from inspiration to exhalation when (1) flow to
the patient drops to the expiratory threshold setting (a percentage of that breath’s peak flow rate),
or (2) the target airway pressure is exceeded by 3 cmH
2
O (mbar), or (3) after the PS max i-time
setting has been reached. Maximum airway pressure never exceeds the High P alarm limit setting.