Validation of Chinese SRI Questionnaire

Validation of Chinese Severe Respiratory Insufficiency （SRI）Questionnaire for COPD Patients With Chronic Hypercapnic Respiratory Failure

Assessment of health-related quality of life in COPD patients with severe chronic respiratory failure requires appropriate and highly specific measurement tools. We attempt to validate the Chinese version of the Severe Respiratory Insufficiency Questionnaire (SRI)

Inclusion Criteria:

1. Adult COPD Patients with chronic hypercapnic respiratory failure established on home noninvasive ventilation for at least 1 month
2. Patients are in a clinically stable state,without any changes of medication during the previous 4 weeks.

Exclusion Criteria:

1. patient's refusal to participate
2. Patients with evidence of acute respiratory failure i.e.patients with worsening of symptoms during the previous 2 weeks, a pH ,7.35, or with signs of respiratory infection