阻塞性疾病肺组织病变肺血管疾病胸廓胸膜病变神经系统及呼吸肌肉疾病肺动脉栓塞,引起通气/血流比例失调或部分未经氧合的血直接流入肺静脉,发生低氧血症。7精选文本CapitalMedicalUniversitySchoolofNursingCapitalMedicalUniversitySchoolofNursingCapitalMedicalUniversitySchoolofNursing『病因』呼吸道阻塞性疾病肺组织病变肺血管疾病胸廓胸膜病变神经系统及呼吸肌肉疾病胸廓外伤、畸形、手术创伤、气胸和胸腔积液,影响胸廓活动和肺脏扩张,导致通气减少及吸入气体分布不均,影响换气功能。8精选文本CapitalMedicalUniversitySchoolofNursingCapitalMedicalUniversitySchoolofNursingCapitalMedicalUniversitySchoolofNursing『病因』呼吸道阻塞性疾病肺组织病变肺血管疾病胸廓胸膜病变神经系统及呼吸肌肉疾病脑血管病变、脑炎、脑外伤、电击、药物中毒直接或间接抑制呼吸中枢;脊髓灰质炎、多发神经炎、重症肌无力导致呼吸肌无力或疲劳,引起通气不足。9精选文本CapitalMedicalUniversitySchoolofNursingCapitalMedicalUniversitySchoolofNursingCapitalMedicalUniversitySchoolofNursing『发病机制』1.低氧和高碳酸血症的发生机制2.低氧和高碳酸血症对机体的影响10精选文本CapitalMedicalUniversitySchoolofNursingCapitalMedicalUniversitySchoolofNursingCapitalMedicalUniversitySchoolofNursing
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