Abstract:Objective To quantitatively compare diaphragmatic motion during forced breathing between patients with chronic obstructive
pulmonary disease (COPD) and normal subjects using dynamic chest radiography. Methods Ninety-six COPD patients and 50
healthy subjects underwent dynamic chest radiography during forced breathing in this prospective study. The distance, motion times
and motion speeds of the diaphragms could be obtained by automatically analyzing with post-processing software. These parameters
were compared between the two groups. Correlation coefficients were analyzed between the motion excursions of the diaphragms
and pulmonary function. Results The average excursions of the diaphragms in COPD patients were significantly less than those in
healthy subjects during forced breathing (P<0.05). And the left COPD (35.93±13.07) mm, the left healthy (41.49±12.07) mm, respectively.
Right COPD (32.05±12.29) mm, right healty (36.88±10.96) mm, respectively. Motion times in inspiratory phase and expiratory phase
were significantly less in COPD patients compared to healthy subjects (P<0.05), inspiratory phase: left COPD 2.03 (1.19) s, left healthy
(2.53±0.83) s丨 right COPD 1.94 (1.32) s, right healthy 2.23 (1.21) s丨 expiratory phase: left COPD 4.77 (3.25) s, left healthy (6.40±2.73) s丨 right COPD
4.94 (3.30) s, righ healthy (6.72±2.58) s. There was no significant difference of peak motion speeds between the two groups. The
excursions of the bilateral diaphragms showed moderate correlation with FEV1/FVC (r=0.44). Conclusion The average excursions
and motion times of the diaphragms in COPD patients were significantly less than those in healthy subjects during forced breathing.
The dynamic chest radiography could be used to evaluate diaphragmatic motion accurately.
钟朝辉a,陈疆红a,吴柯薇a,于刚刚b,王维b,张婷婷a. 动态胸片定量评价慢性阻塞性肺疾病患者用力呼吸下横膈运动的研究[J]. 中国医疗设备, 2021, 36(11): 86-89.
ZHONG Zhaohuia,CHEN Jianghonga,WU Keweia,YU Ganggangb,WANG Weib,ZHANG Tingtinga. Study of Using Dynamic Chest Radiography to Evaluate the Diaphragmatic Motion in
COPD Patients During Forced Breathing. China Medical Devices, 2021, 36(11): 86-89.