目的 观察阶梯式呼吸管理策略在改善感染性休克伴急性肺损伤（ALI）患者中的价值。方法 纳入我院2019年1月—2020年12月收治的感染性休克伴ALI患者共146例为研究对象,数字表法随机分为观察组（73例）与对照组（73例）。对照组常规护理方案,观察组阶梯式呼吸管理,对比干预前后患者心肺功能的差异。结果 观察组平均动脉压、PaCO₂水平低于对照组,心脏指数、中心静脉压、血管外肺水指数、PaO₂与氧合指数高于对照组（P<0.05）;观察组复苏成功率与临床总有效率高于对照组,复苏时间与呼吸平稳时间低于对照组（P<0.05）;观察组气管切开率、有创呼吸机使用率及呼吸机相关性肺炎与气道并发症发生率均低于对照组（P<0.05）。结论 感染性休克并急性肺损伤患者建立阶梯化呼吸管理策略能够显著改善患者的心肺功能,提高临床复苏效果,降低相关并发症风险。

Objective To observe the value of stepwise respiratory management strategy in improving patients with septic shock and acute lung injury（ALI）．Methods A total of 146 patients with septic shock and ALI treated in our hospital from January 2019 to December 2020 were included as the research objects．They were randomly divided into observation group（73 cases）and control group（73 cases）by digital table method．The control group received routine nursing plan,and the observation group received stepwise respiratory management．The differences of cardiopulmonary function before and after the intervention were compared．Results The levels of mean arterial pressure,PaCO₂ in the observation group were significantly lower than those in the control group,cardiac index,central venous pressure,extravascular lung water index,PaO₂ and oxygenation index in the observation group were significantly higher than those in the control group（P<0.05）．The success rate of resuscitation and total clinical effective rate in the observation group were significantly higher than those in the control group,and the resuscitation time and respiratory stability time in the observation group were significantly shorter than those in the control group（P<0.05）．The tracheotomy rate,the rate of using invasive ventilator and the incidence of ventilator associated pneumonia and airway complications in the observation group were lower than those in the control group（P<0.05）．Conclusions The establishment of stepwise respiratory management strategy in patients with septic shock and ALI can significantly improve their cardiopulmonary function,improve the effect of clinical resuscitation and reduce the risk of related complications.

       目的   探讨碳酸氢钠林格液联合乳酸靶向复苏对感染性休克患者的应用效果。方法   选取中国人民解放军联勤保障部队第九八八医院2019年1月—2023年12月收治的80例感染性休克患者，应用随机数字表法将其分为观察组与对照组，均为40例。对照组患者采用复方氯化钠溶液进行液体复苏，观察组患者采用碳酸氢钠林格液联合乳酸靶向复苏。对比两组患者复苏前与复苏后24 h的静脉血氧饱和度（SvO₂）、平均动脉压（MAP）、心脏指数（CI）、心率（HR）等相关生命体征变化，血乳酸、pH值、血钠（Na⁺ ）、血氯（Cl^- ）、碳酸氢根离子（HCO₃^-）水平变化，对比两组患者症状体征消失时间、意识恢复时间、机械通气时间、ICU住院时间、总住院时间及预后不良情况与并发症发生率。结果   复苏后两组SvO₂、MAP、CI均升高，且观察组的SvO₂为（73.62±6.24）%，MAP为（75.26±11.42）mmHg，CI为（3.62±0.66）min/m² ，均高于对照组的（66.85±8.32）%、（68.51±8.37）mmHg 和（3.16±0.35）min/m² ，而HR均降低，其中观察组为（113.26±12.37）次/分，低于对照组的（122.62±12.73）次/分，比较差异有统计学意义（t=4.117，P＜0.001；t=3.015，P=0.003；t=3.894，P＜0.001；t=3.335，P＜0.001）。复苏后两组血乳酸、Cl^- 均降低，pH值、Na⁺ 、HCO₃^-均升高，观察组血乳酸为（1.46±0.52）mmol/L，低于对照组的（2.25±0.32）mmol/L，比较差异有统计学意义（t=8.183，P＜0.001），但两组pH值、Na⁺ 、Cl^- 、HCO₃^-水平对比差异无统计学意义（P＞0.05）。观察组症状体征消失时间为（2.34±0.58）d、意识恢复时间为（1.15±0.27）d、机械通气时间为（5.82±1.08）d、ICU住院时间为（11.85±2.28）d、总住院时间为（23.15±4.26）d，均低于对照组的（3.54±0.72）（2.95±0.34）（10.35±2.12）（15.12±3.23）（27.24±6.37）d，比较差异有统计学意义（t=8.209，P＜0.001；t=26.221，P＜0.001；t=12.042，P＜0.001；t=5.231，P＜0.001；t=3.376，P＜0.001）。观察组多器官功能障碍综合征、肺水肿、脑水肿、再次休克、死亡等不良预后发生率低于对照组（7.50% vs 32.50%；χ ² =7.810，P=0.005）。结论   碳酸氢钠林格液联合乳酸靶向复苏可稳定感染性休克患者生命体征，降低乳酸水平，改善患者预后，缩短住院时间，且能够辅助降低患者不良预后发生率。

       Objective  To explore the application effect of sodium bicarbonate Ringer’s solution combined with lactate targeted resuscitation on patients with septic shock．Methods  A total of  80  patients with  septic  shock admitted to the  988 Hospital，Joint Logistic Support Force of the Chinese People’s Liberation Army from January 2019 to December 2023 were selected and divided into observation group and control group by random number table method，with 40 cases in both groups．The control group was treated with compound sodium chloride solution for liquid resuscitation，and the observation group was treated with sodium bicarbonate Ringer’s solution combined with lactic acid for targeted resuscitation．The changes in SvO₂，MAP，CI，HR，as well as changes in blood lactate，pH，Na⁺ ，Cl^- ，and HCO₃^- levels were compared between two groups of patients before and 24 hours after resuscitation．The time for symptom disappearance，consciousness recovery，mechanical ventilation，and ICU hospitalization were compared between the two groups of patients，as well as total length of hospital stay，poor prognosis，and incidence of complications．Results  That the SvO₂，MAP，and CI were elevated in both groups after resuscitation，and of the observation group （SvO₂［73.62±6.24］%，MAP［75.26±11.42］mmHg，CI［3.62±0.66］min/m² ）was  higher than that of the control group （［66.85±8.32］%，［68.51±8.37］mmHg，［3.16±0.35］min/m² ），the HR was decreased in all cases，the observation group（113.26±12.37）times/min was lower than the control group（122.62±12.73）times/min，the difference was statistically significant（t=4.117，P＜0.001；t=3.015，P=0.003；t=3.894，P＜0.001；t=3.335，P＜0.001）．After resuscitation，both groups blood lactate and Cl^-  were decased，pH value，Na⁺ ，and HCO₃^- increased，and the observation group blood lactate（1.46±0.52）mmol/L was lower than the control group（2.25±0.32）mmol/L，the difference was statistically significant（t=8.183，P＜0.001）．But the comparison of pH value，Na⁺ ，Cl^- ，and HCO₃^- levels between the two groups was not different（P＞0.05）．Time of disappearance（2.34±0.58）d，time of consciousness（1.15±0.27）d，time of mechanical ventilation（5.82±1.08）d，length of ICU stay（11.85±2.28）d and total length of stay（［23.15±4.26］d，［3.54±0.72］d，［2.95±0.34］d，［10.35±2.12］d，［15.12±3.23］d，［27.24±6.37］d），the difference was statistically significant（t=8.209，P＜0.001，t=26.221，P＜0.001，t=12.042，P＜0.001；t=5.231，P＜0.001；t=3.376，P＜0.001）．The incidence of multiple organ dysfunction syndrome，pulmonary edema，cerebral edema，reshock，and death in the observation group was significantly lower than that in the control group（7.50% vs 32.50%；χ ² =7.810，P=0.005，P＜0.05）．Conclusions  The combination of sodium bicarbonate Ringer’s solution and lactate targeted  resuscitation can improve the vital signs of septic shock patients，reduce lactate levels，significantly improve patient prognosis，shorten hospital stay，and assist in reducing the incidence of complications and mortality．