病因 Etiology) >支气管、肺疾病( bronchial and lung diseases) 胸廓运动障碍性疾病( thoracic cage dyskinesia diseases) >肺血管疾病( ung vascular diseases) 其他:如睡眠呼吸暂停综合征( sleep apnea syndrome)病因（Etiology) ➢ 支气管、肺疾病(bronchial and lung diseases) ➢ 胸廓运动障碍性疾病 (thoracic cage dyskinesia diseases) ➢ 肺血管疾病(lung vascular diseases) ➢ 其他：如睡眠呼吸暂停综合征(sleep apnea syndrome)