Wavelet-based ventilator pipeline effusion automatic detection method

Abstract

The invention relates to a wavelet-based ventilator pipeline effusion automatic detection method which comprises detecting an inhalation starting point based on a flow velocity waveform, detecting anexhalation starting point based on the flow velocity waveform, performing wavelet decomposition on a respiratory pressure waveform and performing effusion detection based on a dynamic threshold. According to the method, the condition of the effusion in a pipeline can be detected automatically in real time, the erroneous triggering of a ventilator caused by the effusion in the ventilator pipeline and the injury to a patient caused by the airflow transportation obstacle caused by the change of the airway diameter are effectively reduced, the use level of the ventilator is improved, and the treatment effect of the patient is improved.

Description

technical field [0001] The invention relates to a wavelet-based automatic detection method for ventilator pipeline effusion, which can automatically detect the presence of fluid in the pipeline in real time, and effectively reduce the false triggering of the ventilator caused by the fluid in the ventilator pipeline and the cause of changes in the diameter of the airway. The damage to patients caused by airflow delivery obstacles can be improved, the use level of ventilators can be improved, and the treatment effect of patients can be improved. Background technique [0002] The ventilator is the most important life support equipment in the Intensive Care Unit (ICU). Proper and reasonable use of ventilators can provide good mechanical ventilation support for patients with respiratory failure, ensure that patients take in sufficient oxygen, and provide precious time for medical staff to save their lives. However, improper use of the ventilator may cause lung damage and a serie...

AI Technical Summary

Problems solved by technology

When there is a large amount of fluid in the pipeline, there is a risk of suffocation of the patient; secondly, the fluid provides an environment for the reproduction of germs, which can easily lead to secondary infection of the lungs, such as pneumonia

Third, the effusion will cause changes in the flow rate and pressure waveform of the ventilator, resulting in false triggering

There are many reasons for the accumulation of fluid in the ventilator circuit, including the lack of professional knowledge of the nursing staff, failure to arrange the ventilator circuit in time and unreasonable placement of the circuit, failure to dump the water cup in time, overfilling of the humidification irrigation, etc.

Although most of these problems can be improved by strengthening training and management, due to the low ratio of doctors and patients in the ICU and the heavy workload of nurses, it is common for fluid in the ventilator circuit to be treated in time.

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