Ventilator control system utilizing a mid-frequency ventilation pattern
AssigneeThe Cleveland Clinic Foundation
InventorsRobert L. Chatburn, Eduardo Mireles-Cabodevila
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Abstract
Systems and methods are provided for providing ventilation to a patient. An air source is configured to provide pressurized air to a patient through a patient circuit according to a ventilation pattern. At least one sensor is configured to monitor a corresponding physiologic property of the patient. A ventilator control system is configured to calculate an alveolar ventilation value from the monitored physiologic property of the patient, determine at least an optimal frequency for the ventilation pattern from the calculated alveolar ventilation value, and update the ventilation pattern according to the determined optimal frequency.
Claims20
A method for controlling a mechanical ventilator to provide mid-frequency mandatory ventilation to a patient comprising:
- providing mandatory ventilation to a patient according to a ventilation pattern;
- monitoring an alveolar ventilation of the patient;
- determining one of an optimal frequency, an optimal duty cycle, and an optimal positive end expiratory pressure for the mechanical ventilator according to the alveolar ventilation of the patient;
- and
- updating the ventilation pattern of the mechanical ventilator to include the determined one of the optimal frequency, the optimal duty cycle, and the optimal positive end expiratory pressure.
A medical ventilator system, comprising:
- an air source configured to provide pressurized air to a patient through a patient circuit according to a ventilation pattern;
- at least one sensor configured to monitor a corresponding physiologic property of the patient;
- and
- a ventilator control system configured to calculate an alveolar ventilation value from the monitored physiologic property of the patient, determine at least an optimal frequency for the ventilation pattern from the calculated alveolar ventilation value, and update the ventilation pattern according to the determined optimal frequency.
A computer readable medium storing computer executable instructions for controlling a mechanical ventilator to provide mid-frequency mandatory ventilation to a patient, such that, upon execution in a computer processor, the executable instructions are configured to perform a iterative method comprising the steps of:
- instructing the mechanical ventilator to provide mandatory ventilation to a patient according to a ventilation pattern;
- monitoring the feedback value representing an alveolar ventilation of the patient;
- and
- adjusting a duty cycle of the ventilation pattern according to the feedback value;
- wherein the iterative method is continued until a termination event is detected, such that a plurality of adjusted duty cycles and associated feedback values are collected.
Dependencies are inferred from the claim text.