Abstract:
A device for providing ventilatory assist to a patient is disclosed. The device comprises a manifold having an inspiratory port to receive an inspiratory flow from an inspiratory supply line, an interface port connectable to an external end of an endotracheal tube inserted in a patient's trachea and an expiratory port configured to receive an expiratory flow from the endotracheal tube via the interface port. An inspiratory lumen has a distal end insertable in the endotracheal tube. A cross-section of the inspiratory lumen is smaller than that of the endotracheal tube to allow gas flowing in the endotracheal tube. The inspiratory flow is directed to the inspiratory lumen, or to the endotracheal tube, or at once to the inspiratory lumen and to the endotracheal tube. A ventilatory assist system and method using the device are also disclosed.
Abstract:
The present disclosure relates to a method and a system for quantifying timing discrepancies between inspiratory effort and ventilatory assist. A trigger error is determined by comparing a start time of neural inspiration with a start time of the ventilatory assist. A cycling-off error is determined by comparing an end time of the neural inspiration with an end time of the ventilatory assist. The ventilatory assist is synchronized when the trigger error is lower than a first threshold and the cycling-off error is lower than a second threshold. The ventilatory assist may also be characterized in terms of early or late trigger and of early or late cycling-off. A trigger of a ventilator may be adjusted according to the trigger error and a cycling-off of a ventilator may be adjusted according to the cycling-off error.
Abstract:
The present invention relates to a system and method for determining a patient-ventilator breath contribution index in a spontaneously breathing, mechanically ventilated patient. A patient's efficiency to generate an inspiratory volume without mechanical ventilatory assist and a patient's efficiency to generate an inspiratory volume with mechanical ventilatory assist are calculated and used to determine the patient-ventilator breath contribution index.
Abstract:
The present disclosure provides methods and uses of Tie2 agonists alone or in combination with antiviral agents. In particular, the present disclosure provides methods and uses for treating influenza, treating a bacterial superinfection associated with influenza and decreasing lung endothelial leakage. The disclosure also provides compositions comprising (a) a Tie2 agonist and (b) an antiviral agent and methods and uses thereof.
Abstract:
A ventilatory assist system and method are disclosed. The system comprises a tube for connection to a patient's airway, inspiratory and expiratory tube lumens connected to the tube, an inspiratory air source connected to the inspiration tube lumen, and a controller of air pressure in the expiratory tube lumen. The pressure controller is responsive to a physiological breathing signal representative of patient's inspiratory effort to allow air flow through the expiratory tube lumen during a patient's expiration phase, partially restricting the air flow through the expiratory tube lumen to a so minimum air flow during a patient's inspiration phase. During both respiratory phases, a unidirectional air flow is produced through the inspiratory and expiratory tube lumens to prevent air expired by the patient from being breathed again. The physiological breathing signal allows synchronization of the ventilatory assist with breathing efforts of the patient.