摘要
【摘要】目的探讨肺泡动脉氧分压差(PAaO2)动态变化在评估入住ICU的重症弥漫性问质性肺疾病患者疾病严重程度和对预后的预测价值。方法采用回顺性研究方法,选择2012年1月至2014年8月的弥漫性间质性肺疾病患者34例,于人院1、3、7、14d抽取外周血检测血气分析,根据28d生存情况分为存活组和死亡组,比较两组血气分析各指标有无差异及各指标对预后的预测作用。结果①死亡组患者第3、7、14天的PA-a,O2均高于存活组,3d(383.03±162.59)mmHgVS(216.20±97.33)mmHg,7d(369.38±155.47)mmHgVS(185.16±81.23)mmHg,14d(507.30±132.52)mmHgVS(169.13±78.69)mmHg(P〈O.05);死亡组患者的3、7、14d的吸入氧气浓度(Fi():)均高于存活组,3d(73.47士23.98)mmHgVS(49.07±11.43)mmHg,7d(71.23±25.89)mmHgVS(46.22±8.08)mmHg,14d(83.17±22.58)mmHgVS(43.17±8.86)mmHg(P〈0,05);死亡组患者第7、14天的PaCO2高于存活组,7d(46.83±17.83)mmHgVS(31.85±5.90)mmHg,14d(47.01±16.65)mmHgVS(31.85±5.90)mrnHg(P〈O.05);死亡组患者第14天的PO2低于存活组,(72.13±28.88)mmHgVS(108.36±49.14)mmHg(P〈O.05)。②比较第1、3、7、14天PAA-aO2水平刘问质性肺疾病患者28d病死率的预测价值,AUC最大值为第14d(0.958),在ROC曲线上敏感度、特异度均较高的临界点为228.85mmHg,敏感度为75%,特异度为83.3%;③根据第14天PA-aO2水平是否大于228.85mmHg为界,以28d生存期为上界,生存曲线显示PAaO2水平〈228.85mmHg组患者的中位生存期为28d,PAaO2水平〉228.85mmHg组患者的中位生存期只有18.5d,两组差异有统计学意义。④COX预后分析显示若不考虑间质性肺疾病的病因因素,14d的PA-aO2是否大于228.85mmHg是预测28d病死率的预后指标(P〈0.05)。结论在弥漫性问质性肺疾病患者,动态监测PA-aO2水平变化趋势有助于预后的判断。
Objective To investigate the prognostic value of monitoring alveolar arteriai oxygen gradient (PA-aO2) in ICU Patients with diffuse interstitial lung disease. Methods 34 patients were collected with diffuse interstitial lung disease in ICU from January 2012 to August 2012 through a retrospective Study,Blood samples for testing blood gas analysis were taken on the 1.3.5.7,14 day of hospitalization in ICU, according to 28-day morta/ity divided into the survival group and death group, compared the plasma blood gas analysis between each group and the relationship between alveolar arterial oxygen gradient and prognosis of the disease. Results ① The PA-aO2 and fraction of inspiration O2 (FiO2) on the 3, 7, 14 day of hospitalization in non survival group were statistically significant higher than survival group,PaoO2 3 d (383.03+ 162.59) mmHg vs (216.20+97.33) mmHg, 7d (369.38+ 155.47) mmHg vs (185.16 + 81.23) mmHg, 14 d (507.30 + 132.52) mmHg vs (169.13 +78.69) mmHg(PG0.05);FiO2 3 d (73.47+23.98) mmHg vs (49.07+11.43) mmHg,7 d (71.23+ 25.89) mmHgvs (46.22+8.08) mmHg,14 d(83.17+22.58) mmHg vs (43.17+8.86)mmHg,The PaCO2 on the 7th, 14th day of hospitalization in non-survival group were statistically significant higher than survival group,7 d(46.83+17.83) mmHg vs (31.85+5.90) mmHg,14 d (47.01+16.65) mmHg vs (31.85+5.90) mmHg ( P〈0.05) ,and the PaO2 of the 14th day of hospitalization in the non-survival group were statistically significant lower than survival group,14 d (72.13+28.88) mmHg vs (108. 36+ 49.14) mmHg( P 〈0.05). ②9 The PA-aO2 on 14th day had a statistically significant for predict the 28-day mortality,The area under the receiver operating characteristic (ROC) curve was 0. 958, the cut off point value (cut off) predict prognosis is 228.85mmHg,the value of this cut off point under sensitivity 92.5%, specificity of 81.0%. ③The median survival time of patients for 14 day PA-aO2〉228.85 mmHg (18.5 d) is far less than the patients for PA-aO2〉 228.85 mmHg (28.0 d). ④ In multivariate analyses, PA-aO2 on 14th day were significantly correlated with 28 day mortality of diffuse interstitial lung disease (P〈0.05). Conclusions Dynamic monitoring of PA-aO2 can help to assess the prognosis of patients with diffuse interstitial lung disease.
出处
《国际呼吸杂志》
2015年第24期1873-1877,共5页
International Journal of Respiration