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用胸腹电阻抗呼吸图促检测慢性阻塞性肺病（COPD）患者的膈肌疲劳，同时测定患者的营养水平，包括实际体重／理想体重、血清白蛋白、血清胆固醇、血红蛋白及血淋巴细胞计数。分析了膈肌疲劳与营养水平间的关系，发现营养水平下降会导致或加重偏肌疲劳，并探讨营养失调导致膈肌疲劳的机制。
Diaphragmatic fatigue was measured in patients with chronic obstructive pulmonary disease (COPD) by the thoracoabdominal resistance and respiratory arrest, and the nutritional status of patients with chronic obstructive pulmonary disease (COPD), including actual body weight / ideal body weight, serum albumin, serum cholesterol, hemoglobin and blood lymphocyte counts. The relationship between diaphragmatic muscle fatigue and nutritional status was analyzed. It was found that the decrease of nutrition level resulted in or aggravated the partial muscle fatigue, and the mechanism of diastolic dysfunction caused diaphragmatic fatigue.