Alarm "ASV: cannot meet target" during manual SBT with ASV

09.04.2020
Author: Sasha Starcevic, Kaouther Saihi, Reviewer: Matthias Himmelstoss, Thomas Reimer, Bernhard Schmitt, Munir Karjaghli

When conducting a manual Spontaneous Breathing Trial by setting the %MinVol to 25% in ASV mode, the alarm “ASV: cannot meet target” is generated.

Low-priority alarm ASV: cannot meet target

The ventilation mode INTELLiVENT-ASV offers the option of conducting automatic Spontaneous Breathing Trials (SBT) once the ready-to-wean criteria are all in the target range. When using the mode Adaptive Support Ventilation (ASV), it is possible to conduct an SBT by manually reducing the %MinVol to 25%.

However, there is an important difference to be aware of. During an SBT with INTELLiVENT-ASV, the alarm "ASV: cannot meet target" is de-activated. When you reduce the %MinVol manually with ASV, the alarm is still active.

 

This low-priority alarm is then generated when the calculated Vt and or respiratory rate by the ASV algorithm are lower than the safety limits (Vt min and and RRmin).

In this case, ASV is unable to reach the target volume and or frequency, i.e., the target point on the ASV graphic is not within the safety frame.

In the case of a low-priority alarm, the alarm lamp is lit yellow and you will hear two sequences of beeps. Touch the Audio Pause key to silence the alarm for 2 minutes. Please refer to the Operator's Manual for your device.

Note that the ventilator’s behavior generating this alarm does not affect the patient.

Relevant ventilators: All
Relevant software: HAMILTON-C6 SW v1.1.4 and lower; HAMILTON-C1/T1/MR1 SW v2.2.4 and lower; HAMILTON-C2 SW v 2.2.5 and lower; HAMILTON-C3 SW v 2.0.5 and lower; HAMILTON-G5/S1 SW v 2.81 and lower

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ASV, alarm, SBT, wean, cannot meet target, reduce %MinVol
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Date of Printing: 23.10.2020
Disclaimer:
The content of this Knowledge Base is intended for informational purposes only. Hamilton Medical AG provides no warranty with respect to the information contained in this Knowledge Base and reliance on any part of this information is solely at your own risk. For detailed instructions on operating your Hamilton Medical device, please refer to the official Hamilton Medical Operator’s Manual for the respective device.