Ventilation control system and method utilizing patient oxygen saturation
AssigneeGeneral Electric Company
InventorErkki Paavo Olavi Heinonen
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Abstract
A patient ventilation system includes a ventilator configured to deliver ventilation gas to patient, a CO2 concentration sensor configured to provide EtCO2 measurements for the patient, and an SpO2 monitor configured to determine an SpO2 value for the patient. A ventilation control module is executable on a processor and configured to compare the SpO2 value to a threshold SpO2 and determine from this comparison that the SpO2 value indicates inadequate oxygenation. A minimum ventilation amount is then set, and the ventilator is then controlled based on the EtCO2 measurements and the minimum ventilation amount so as to deliver at the least the minimum ventilation amount to the patient while the SpO2 value indicates inadequate oxygenation.
Claims20
A patient ventilation system comprising:
- a ventilator configured to deliver ventilation gas to a patient;
- a CO2 concentration sensor configured to provide end tidal (EtCO2) measurements for the patient;
- an SpO2 monitor configured to determine an SpO2 value for the patient;
- a ventilation control module executable on a processor and configured to:
- compare the SpO2 value to a threshold SpO2 for inadequate oxygenation;
- determine that the comparison indicates inadequate oxygenation;
- set a minimum ventilation amount upon the comparison indicating inadequate oxygenation;
- determine a ventilation amount based on the EtCO2 measurements;
- and
- control the ventilator based on the ventilation amount or the minimum ventilation amount, whichever is greater, so as to deliver at least the minimum ventilation amount to the patient while the SpO2 value indicates inadequate oxygenation.
A method of controlling a ventilator to ventilate a patient:
- receiving EtCO2 measurements for the patient from a CO2 concentration sensor;
- receiving an SpO2 value for the patient from an SpO2 monitor;
- at a processor executing a ventilation control module:
- comparing the SpO2 value to a threshold SpO2 for inadequate oxygenation;
- determining that the comparison indicates inadequate oxygenation;
- setting a minimum ventilation amount upon the comparison indicating inadequate oxygenation;
- determining a ventilation amount based on the EtCO2 measurements;
- and
- controlling the ventilator based on the ventilation amount or the minimum ventilation amount so as to deliver at least the minimum ventilation amount to the patient while the SpO2 value indicates inadequate oxygenation.
Dependencies are inferred from the claim text.