Effects of low frequency electric stimulation on diaphragmatic muscle combined with threshold inspiratory muscle training on lung function in patients with sub-acute traumatic cervical spinal cord injury
Effects of low frequency electric stimulation on diaphragmatic muscle combined with threshold inspiratory muscle training on lung function in patients with sub-acute traumatic cervical spinal cord injury
Objective To observe the effectiveness of low frequency electric stimulation on diaphragmatic muscle com-bined with threshold inspiratory muscle training on lung function and incidence of lung infections in patients with sub-a-cute traumatic cervical spinal cord injury.Methods A total of 40 patients with sub-acute traumatic cervical spinal cord injury in Department of Critical Care Medicine of the First Affiliated Hospital of Bengbu Medical University from July 2020 to June 2022 were assigned to the control and experimental groups(20 for each group)by the random number ta-ble.The control group received threshold inspiratory muscle training on the basis of conventional treatment,and the ex-perimental group was given low frequency electric stimulation on diaphragmatic muscle on the basis of the control group.The patients'lung functions[forceful lung volume(FVC),FVC as a percentage of the predicted value(FVC％pred),first-second forceful expiratory volume(FEV1),and FEV,as a percentage of the predicted value(FEV1％pred)]were evaluated before and after 3 weeks of treatment.The incidence of pulmonary infections was followed up at 3 months after treatment.Results After three-week training,compared with before the training,FVC,FVC％pred,FEV,and FEV1％pred in two groups obviously improved(P＜0.01).Comparing with the control group,FVC,FVC％pred,FEV,and FEV1％pred in experimental group were significantly high(P＜0.01).After 3 months of treatment,the incidence of lung infection was significantly lower in the experimental group than in the control group[50.0％(10/20)vs.80.0％(16/20),x2=3.956,P=0.047].Conclusion Low frequency electric stimulation on diaphragmatic muscle combined with threshold inspiratory muscle training can significantly improve on lung function in patients with sub-acute traumatic cervical spinal cord injury,and its effect is better than the simple respiratory training.
关键词
低频脉冲电刺激/阈值压力负荷呼吸训练/颈段脊髓损伤/肺功能
Key words
Low frequency pulse electrical stimulation/Threshold inspiratory muscle training/Cervical spinal cord inju-ry/Lung function
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