Et Control: Simplified Automation
Et Control is an optional gas delivery mode for the fully digital Aisys® Carestation® from GE Healthcare.
With Et Control the clinician sets the target EtO2 and EtAA values, the system constantly monitors the patient’s
EtO2 and EtAA values and automatically adjusts the gas delivery and total flow to achieve and maintain the
set target values. Intelligent inbuilt safeguards protect against over-delivery and under-delivery of agent and
hypoxia – while providing the clinician with peace of mind and total control at all times.
Sophisticated safety features
Et Control constantly measures end-tidal values and automatically adjusts for the patient expired fractions,
so inputs can be tailored with extreme precision to achieve the desired result. This level of precision
significantly reduces potential over-delivery of agents. In addition to protecting against over-delivery of agents,
Et Control provides an intelligent hypoxic guard that ensures alveolar oxygen is always above 25%, especially
important during circle anaesthesia. Traditional hypoxic guards only regulate the oxygen in the fresh gas and
not in the circle breathing system.
Simplicity and ease of use
Et Control can be used by any clinician familiar with the GE Healthcare anesthesia machine range. Simply set the EtO2 and EtAA target values and Aisys takes care of ensuring those targets are met. For further peace of
mind when in Et Control, the user can also select a total minimum fresh gas flow, to disallow total fresh gas flows
lower than the minimum setting. Et Control can give higher total flows than the minimum flow setting (typically in
response to big changes to the EtO2 and EtAA target settings) but it will never go below the minimum total
With increasing economic challenges, Et Control provides a tool to deliver low-flow anesthesia in a safer
and controlled way, minimizing fresh gas and anesthetic agent usage, with a positive impact on costs.