Abstract
目的 探讨严重急性呼吸综合征(SARS)患者使用无创通气后对胸部CT影像变化的影响及临床意义.方法 回顾性分析18例SARS患者使用无创通气前及使用后(4～12 d)胸部CT影像变化,并做远期(3～36个月)胸部CT随访.设未使用无创通气SARS患者27例为对照组.结果 (1)使用无创通气18例患者中15例出现特殊CT表现:7例肺内实性病灶密度减低呈磨玻璃密度灶;5例肺下叶支气管血管束周围环形肺气肿;8例出现胸膜下肺气肿;2例出现纵隔气肿及气胸.远期随访(36个月)观察,2例患者残留胸膜下弧形线状影但有吸收.(2)对照组27例治疗过程中未出现上述CT表现.结论 使用无创通气对SARS患者胸部CT影像表现产生影响,全面认识SARS影像动态变化有利于合理使用无创通气治疗相关性肺炎。
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