Confident low-flow anesthesia

Aisys™ CS² End-tidal Control software

Designed to complement the expertise of anesthesia providers in managing complex cases in the operating room, End-tidal Control (Et Control) software* for the Aisys CS² anesthesia machine allows anesthesia providers to set targets for end-tidal oxygen (EtO2) and anesthetic agent (EtAA). Et Control automatically adjusts fresh gas concentrations to quickly achieve and maintain those targets, regardless of changes in the patient's hemodynamic and metabolic status.

Vizient innovative technology designated product

End-tidal Control software received an Innovative Technology designation from Vizient, Inc. for its potential to enhance clinical care, patient safety, healthcare worker safety, and improve business operations of healthcare organizations.


Benefits of End-tidal Control


Clinically safe

One study has indicated that, when used as indicated, Et Control is as clinically safe as manual fresh gas control1

Fast, low-flow control

Reach 90% of your target EtAA within an average of 90 seconds3 and maintain the target at minimal flow rates

Reduced workloads

One study has shown it can reduce the number of key presses by >50%4 to help simplify adoption of low-flow strategies by your staff

Vigilant patient support

One study has shown that End-tidal control is twice as accurate at maintaining the set targets than manual control, regardless of patient status1

Eco-friendly practices

One study has shown a potential 44% decline in the rate of greenhouse emissions5 when employing Et Control software

Improved cost savings

Studies have shown it can reduce anesthetic agent consumption by over 25% depending on agent1,4

Functionality & FAQs


How it works

Read this summary of how Et Control software functions and the safety mechanisms the system takes to prevent delivering a hypoxic mixture.

Download data sheet

Frequently asked questions

Download the FAQs to learn how you can safely practice low-flow anesthesia using Et Control software for automating the delivery of EtO2 and EtAA.

Get the FAQs

Learn how End-tidal Control operates

Watch this whiteboard video that explains the fundamentals of Et Control software for automatically adjusting fresh gas flow concentrations.

Watch video

Compare Et Control software to ecoFLOW software

Understand how each software differs and helps support low-flow anesthesia practices.

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Clinicians discuss Et Control software


Automation in Anesthesia: First-Ever Technology for US Providers

Watch what clinicians have to say about Et Control software at this 2023 ASA symposium.

Watch the webinar

OR Sustainability and end-tidal control | ASA 2023

Listen to this Top Med Talk podcast with Dr. David Hovord discussing End-tidal Control and OR sustainability.

Discover the podcast

Advances in Low-flow Anesthesia: The Path to Automation

Watch an expert panel of clinicians discuss advances in low-flow anesthesia.

Watch the webinar


End-tidal Control data highlights


Review literature published on the use of Et Control software for automating fresh gas flow concentrations in the operating room.

Download white paper

Download literature summary

  1. Refer to GE HealthCare Et Control Pivotal Study Report DOC2163005. When used as indicated, Et Control is as clinically safe as manual fresh gas control.
  2. The number 2 footnote has been omitted to avoid any confusion with the Aisys CS2 product name.
  3. Et Control user’s reference manual (5824844-USA), Et Control Accuracy Graph.
  4. S. Singaravelu and P. Barclay, Automated control of end-tidal inhalation anaesthetic concentration using the GE Aisys Carestation. British Journal of Anaesthesia 2013; 110 (4): 561–6.
  5. Tay. S, et al. Financial and environmental costs of manual versus automated control of end-tidal gas concentrations, Anaesthesia Intensive Care 2013; 41: 95-105.

* Et Control in the United States is indicated for patients 18 years of age and older.

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