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SYSTEMS AND METHODS FOR VENTILATION WITH UNRELIABLE EXHALATION FLOW AND/OR EXHALATION PRESSURE

  • US 20140261409A1
  • Filed: 03/13/2013
  • Published: 09/18/2014
  • Est. Priority Date: 03/13/2013
  • Status: Abandoned Application
First Claim
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1. A method for ventilating a patient with a ventilator, comprising:

  • delivering a fixed base flow;

    monitoring inspiratory pressure and exhalation flow during ventilation of a patient with a ventilator;

    delivering ventilation based at least on the monitored exhalation flow;

    triggering inspiration during the ventilation based at least on the monitored exhalation flow based on the first of at least one of the following events to occur;

    detecting a first trigger condition; and

    detecting expiration of a predetermined amount of time;

    determining a malfunction that makes the monitored exhalation flow unreliable; and

    in response to the malfunction;

    ceasing ventilation based on the monitored exhalation flow;

    estimating an exhalation flow based on the monitored inspiratory pressure;

    delivering ventilation based at least on the estimated exhalation flow;

    triggering inspiration during the ventilation based at least on the estimated exhalation flow based on the first of at least one of the following events to occur;

    detecting a second trigger condition based at least on the estimated exhalation flow; and

    detecting expiration of the predetermined amount of time.

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