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52 results about "Bronchodilator" patented technology

A bronchodilator is a substance that dilates the bronchi and bronchioles, decreasing resistance in the respiratory airway and increasing airflow to the lungs. Bronchodilators may be endogenous (originating naturally within the body), or they may be medications administered for the treatment of breathing difficulties. They are most useful in obstructive lung diseases, of which asthma and chronic obstructive pulmonary disease are the most common conditions. Although this remains somewhat controversial, they might be useful in bronchiolitis and bronchiectasis. They are often prescribed but of unproven significance in restrictive lung diseases.

Airway resistance judgment based on diaphragmatic electromyogram

The invention relates to a method for adopting a diaphragmatic electromyogram to judge an airway resistance, namely applying the change of the ratio of the diaphragmatic electromyogram to an airflow to judge change of a lower airway resistance. The diaphragmatic electromyogram can be recorded through an esophagus electrode and can be also recorded through a surface electrode. An airflow signal can be obtained through various flow meters and is represented in the form of peak flow rate, mean flow rate, tidal volume and the like. The change of the lower airway resistance is reflected through the change of the ratio of the diaphragmatic electromyogram to the airflow. When a bronchial provocation test is performed, airway shrinkage of an asthma patient causes increase of the lower airway resistance, and the ratio of the diaphragmatic electromyogram to the airflow rises at the moment. Similar to the principle, a bronchodilator causes airway relaxation during asthmatic attack, accordingly the airway resistance is reduced, and the ratio of the diaphragmatic electromyogram to the airflow is also reduced with the resistance reduction. The method does not need a lung function instrument, and medical resources are saved. A patient only needs to perform eupnea, and a complicated checking routine is simplified. The method is suitable for checking of airway hyperresponsiveness and airway obstruction reversibility of lots of patients, especially the old, children and unconscious patients.
Owner:罗远明
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