Conclusion: Breathing exercises are safe for elderly patients with COPD and can effectively improve lung function and quality of life.
结论：对高龄COPD患者采取呼吸锻炼是安全的，并且能有效地改善肺功能和生活质量状况。
Conclusion Theophylline can relieve airway inflammation, improve lung function in stable COPD patients.
结论茶碱可减轻COPD患者气道炎症，改善COPD稳定期肺功能。
Conclusion Theophylline can relieve airway inflammation, improve lung function in stable COPD patients.
结论茶碱可减轻COPD患者气道炎症，改善COPD稳定期肺功能。
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