The ventilator offers several control and support modes along with their combinations. There are distinct modes useful for weaning off the patient.

There is a choice of interactive mode also where control and support modes can be switched automatically. This is helpful when the patient has insufficient spontaneous activity and immediate switching to corresponding control mode is desired to sustain life.

It also provides non-invasive ventilation NIV as well. At times it is preferred to avoid complications associated with invasive ventilation.

To sum up

• PSV can substantially reduce the Work of breathing (WOB)

• PRVC automatically ventilate at minimum pressure possible.

• SIMV provides better ventilator-patient synchrony and is a useful tool for weaning.

• VS modulates the pressure of PSV to achieve the target volume, the goal prescribed by the operator.

• 2-PAP is an invasive bi-level pressure control mode where patient breaths freely in both the pressure levels. The frequency of mandatory cycling between the pressure levels is as set by the operator. It synchronizes with the patient if the breathing effort falls within the synchronization window. It supports spontaneous breathing with reduced WOB.

• NIV is a bi-level pressure control mode, purely for mask ventilation. The cycling between the two levels is patient controlled. It essentially avoids the complications of invasive ventilation and is reported to have shorter period of hospitalization.

• APRV is effective for ARDS / acute lung injury cases.

Simultaneous display of three waves have been provided. The display is on real time basis. It shows the pressure, flow and volume curves plotted against time.

The ventilator allows considering different duration of non-breathing state for the purpose of deciding a patient to be Apnic. Corrective measures like apnea back up are then applied. As a normal practice, longer apnea time is considered for adults. It helps the operator to apply for better ventilatory management.

It has an important role in PSV mode. It sets when to withdraw the raised support pressure of PSV vis-à-vis the fulfillment of demand.

The demand flow, once initiated, decays progressively as the demand is met. In other words, the flow varies from 100% to 0% when the demand is satisfied completely. But considering the comfort to the patient, the demand flow is withdrawn prematurely without satisfying the demand completely.

However, if withdrawn too early, the demand would be too less satisfied. The withdrawal thus needs to be set judiciously to avoid asynchrony with the patient.

Higher ETS would withdraw the raised pressure earlier than the lower ETS would do.

The duration for nebulization may be set by the operator. The nebulization stops automatically after the set time. It helps the operator in his busy schedule.

Instant 100% oxygen may availed by operating the touch panel at the specific point. But the operator may need to deactivate the facility after some time. It would be convenient to set the duration instead. The durations from 2 to 10 minutes are available.

It protects against accidental or unwarranted tampering in the touch panel.  If no activity of setting is detected beyond 60 seconds, the panel becomes locked automatically.  To deactivate, the LOCK symbol is to be touched momentarily.

The display is dimmed automatically if no action on the panel is detected over 2 minutes. It avoids disturbances due to unwanted illuminations at night. More importantly, it saves battery power and increases the backup considerably. The usual brightness is restored on touching the panel again.

The sound of alarms may sometimes become irritating and may disturb the patients as well. The ventilator provides for adjusting the loudness of alarm to suit the requirement. The sound can be adjusted from 10 to 50 dB approximately.