The end-tidal controller uses two input signals (the end-tidal and inspiratory concentrations) to control the isoflurane concentration in the fresh gas flow, using a model-based algorithm.
The robust controller is used to compensate for uncertainties of the tidal current and river current through the estimated law.
The ventilation controller adjust minute volume to reach a target end tidal CO2 set by the user.
The controller titrates the positive end-expiratory pressure (PEEP) and tidal volume (VT) to ventilate the lung at its maximal compliance in order to avoid excessive lung overinflation as well as underinflation.
Exemplarily we will focus on the respiratory rate (RR) controller, responsible for the arterial partial pressure of carbon dioxide/end-tidal carbon dioxide pressure (etCO2) control.
The controller is what will be adjusted to maintain the set point; in this case ventilator setting such as tidal volume and PEEP.
Because the ventilation controller uses PETCO2 to adjust MV, target PETCO2 ranges were adjusted in passive patients when the end-tidal to arterial PCO2 gradient was above 5 mmHg.
Price Tidal costs £19.99.
