Effects of external diaphragm pacing combined with breathing training on pulmonary function of chronic obstructive pulmonary disease patients

Main Article Content

Jie Li
Xu Fan
Yafei Liu
Yu Guo
Qiang Dong

Abstract

Background: Pulmonary rehabilitation training is effective for patients with chronic obstructive pulmonary disease (COPD). External diaphragm pacing is a method to induce the change of nerve potential of the diaphragm by electrical stimulation and then stimulate the regular contraction of the diaphragm to improve the function of the diaphragm.


Objective: To explore the effects of external diaphragm pacing combined with breathing training on pulmonary function of COPD patients.


Methods: One hundred COPD patients admitted to our hospital from January 2021 to January 2023 were chosen and divided into control group (CG) and observation group (OG). Patients in the CG received breathing training. Patients in the observation group received external diaphragmatic pacing intervention after 30 minutes of respiratory training, with the pulse frequency adjusted to 30 ~ 40 Hz according to the patient's comfort level, and the pacing frequency adjusted to 9-12 times/minute, 30 minutes/times, 2 times/day. The clinical efficacy, lung function, arterial blood gas, oxidative stress, adverse effects that occurred during the treatment process along with quality of life in both groups was compared.


Results: Due to the patient's own reasons to fall off 3 cases, the final completion of 97 cases, including 48 cases in the control group and 49 cases in the observation group. The indicators and scores of the two groups of patients before treatment were not statistically different, and were comparable between the two groups (P>0.05). After treatment, the total effective rate, FEV1, FVC , and FEV1/FVC levels of OG were higher than those of CG group indicating that the improvement of lung function by combined treatment was better (P<0.05). Compared with CG, OG had lower PaCO2 levels and higher PaO2 levels, suggesting that combined treatment improved patients' ventilatory function (P<0.05). In addition, lower MDA levels and higher SOD and GSH levels suggested that the combination therapy reduced COPD-induced oxidative stress. The probability of adverse events in OG (8.89%) increased somewhat compared to CG (4.17%), but there was no statistical difference (P>0.05).The CAT score of OG was higher than that of CG, suggesting that the combination therapy gave patients a better experience.


Conclusion: Compared with respiratory training, external diaphragmatic pacing combined with respiratory training has a better effect on improving lung function and quality of life in patients with chronic obstructive pulmonary disease. However, due to the small sample size of this study, the single source of the sample, and the limitations of the sample selection, the conclusions drawn from this study need to be further justified. This study also suggests the potential of external diaphragmatic pacing combined with respiratory training in the clinical treatment of obstructive lung disease.

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Research Articles

References

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