Method and system for controlling ventilator using thoracic impedance signal

Abstract

The invention discloses a method and system for controlling a respirator through impedance cardiography signals. The method comprises the steps that in the external chest compressing process, the impedance cardiography signals of a patient are obtained through a defibrillating electrode and digitally acquired, and the acquired impedance cardiography signals are processed; the differential signal of the impedance cardiography signals is calculated, and variation of the impedance cardiography signals and the differential signal are comprehensively analyzed; pressurizing periods and relaxing periods of external chest compression are identified in real time by setting detection threshold values, and detection results are simultaneously fed back to the respirator; by means of the feedback results of the impedance cardiography signals, the respirator is controlled to inhale in the relaxing periods and to exhale in the pressurizing periods in the continuous external chest compressing process, synchronous aeration of external chest compression is achieved, hyperventilation or hypoventilation is avoided, the resuscilation successful rate is increased, and a rescuer can operate the respirator more standardly.

Description

technical field [0001] The invention relates to the field of ventilators, in particular to a method and a system for controlling ventilators by using thoracic impedance signals. Background technique [0002] Cardiopulmonary resuscitation (CPR) is the key measure for rescuing critically ill patients with cardiac and respiratory arrest, that is, chest cardiac compression forms a temporary artificial circulation and restores spontaneous pulse, artificial / mechanical ventilation is used instead of spontaneous respiration, and rapid electrical defibrillation switches Compulsive ventricular fibrillation, and first-aid techniques for early restoration of spontaneous circulation with vasoactive drugs. Chest cardiac compression is an important measure to rescue patients with respiratory and cardiac arrest clinically. The 2015 CPR guidelines recommend that when there is no airway intubation, ventilation should be performed without compressions, and CPR should be performed with a compr...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the existing technology, the technical problem to be solved by the present invention is to provide a method and system for controlling the ventilator by using the chest impedance signal, solve the problem of chest compression and ventilation matching, improve the success rate of resuscitation, and enable rescuers to operate breathing Machine is more standard

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