A Study of in Elderly Patients With COPD on Long-term Home Oxygen Therapy Combined With MCI

Inclusion Criteria: * age ≥ 60 years old; * Physician-diagnosed stable COPD based on the 2022 Global Initiative for Chronic Obstructive Lung Disease (GOLD) guidelines ; * SpO₂ \<88% or PaO₂ \<60 mmHg; * Met diagnostic criteria for MCI , including subjective cognitive concerns;objective cognitive impairment in memory, executive function, attention, and/or language; preserved activities of daily living ; and absence of dementia ; * Unimpaired Mandarin communication ability ; * Voluntary participation in the study. Exclusion Criteria: * comorbid asthma or malignant lung cancer; * long-term home oxygen therapy(≥15 hours/day); * concurrent participation in similar trials; * significant sensory impairments, such as vision or hearing loss ; history of psychiatric disorders or congenital intellectual disabilities; comatose state, presence of major diseases, or being in the terminal stage; * presence of other neurological diseases that could cause cognitive impairment.