[Research on a new method to trigger ventilator based on electromyogram].
In order to improve synchrony between a ventilator and its patient, a new method for triggering a ventilator based on diaphragmatic electromyogram (EMG) is introduced. The methods to extract and process diaphragmatic EMG signals are studied. It has been shown that the characteristic parameters of a respiration activity, such as inspiratory beginning point, expiratory beginning point and respiration period, can be detected from diaphragmatic EMG envelop instead of traditional flux curve. A new parameter, designated as diaphragmatic "Intensity of EMG" for short "IEMG", is defined. Repeat respiration tests have disclosed that there is relatively high correlation between the diaphragmatic IEMG curve and its corresponding cubage curve. These results primarily demonstrate that the new synchronization method may be feasible.
Lu
Yaosheng
Y
College of Information Science and Technology, Jinan University, Guangzhou 510632, China. lys@sunray-cn.com
Xian
Ying
Y
Chen
Jiongfeng
J
Zheng
Zeguang
Z
D003964:Diaphragm / Q000502:physiology; D004576:Electromyography; D006801:Humans; D011175:Positive-Pressure Respiration / Q000379:methods; D012119:Respiration; D012121:Respiration, Artificial / Q000379:methods*; D012131:Respiratory Insufficiency / Q000628:therapy; D012132:Respiratory Muscles / Q000502:physiology*; D014939:Work of Breathing / Q000502:physiology*