Li H S, Yuan Z Q, Song H P, Luo Q Z, Xiang F, Ma S Y, Zhou J Y, Tan J L, Zhou L, Peng Y Z, Luo G X
State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Burn Research, the First Affiliated Hospital of Army Medical University (the Third Military Medical University), Chongqing Key Laboratory for Disease Proteomics, Chongqing 400038, China.
Zhonghua Shao Shang Za Zhi. 2021 Oct 20;37(10):911-920. doi: 10.3760/cma.j.cn501120-20210803-00266.
To analyze the clinical effect of extracorporeal membrane oxygenation (ECMO) in the treatment of burn patients with acute respiratory distress syndrome (ARDS). The retrospective observational study and the systematic review were applied. From March 2014 to July 2020, five burn patients with ARDS received ECMO treatment in the First Affiliated Hospital of Army Medical University (the Third Military Medical University). All the five patients were male, aged from 40 to 62 years. The average total burn surface area was 58.8% total body surface area (TBSA) and four cases had severe inhalation injury. Patient's ECMO starting time, duration and mode, and whether successfully weaned or the cause of death, and others. were recorded. Furthermore, the changes of oxygenation and infection before, during, and after utilizing ECMO were analyzed. and from the establishment of each database to August 2021 were searched using "Extracorporeal Membrane Oxygenation", "ECMO", "burn", "inhalation" as the search terms and "Title/Abstract" as the field to retrieve the clinical articles that meet the selection criteria . Basic information were extracted from the articles, including sample size, gender, age, total burn area, inhalation injury, the indication of ECMO, the start and lasting time of ECMO, ECMO mode, rate of successful weaning, complications of ECMO, mortality, the combined application of continuous renal replacement therapy (CRRT). Five patients started venovenous ECMO on an average of 10.2 days after injury and lasted an average of 180.4 hours. Three out of 5 patients were weaned successfully with one patient survived. Four patients died of multiple organ dysfunction syndrome (MODS) and septic shock. Compared with those before ECMO treatment, the arterial oxygen partial pressure (PaO) and oxygen saturation in arterial blood (SaO) of three successfully weaned patients obviously increased during and after ECMO treatment. The fraction of inspired oxygen (FiO) decreased below 50% and PaO/FiO ratio increased above 200 mmHg (1 mmHg=0.133 kPa) during and after ECMO. Furthermore, lactic acid and respiratory rate decreased, basically. Compared with those before ECMO, PaO and SaO in the other two patients during ECMO, who failed to be weaned, continuously decreased while lactic acid increased. Before and during ECMO, the PaO/FiO ratios of unsuccessfullg weaned cases were less than 200 mmHg, and partial pressure of carbon dioxide in arterial blood (PaCO) were more than 40 mmHg. Compared with those before ECMO, there were no significant changes in body temperature during and after ECMO, which were less than 38 ℃. Compared with those before ECMO, the leucocyte number (the index without this in unsuccessfully weaned cases was omitted, the same as below) in four patients showed a significant decrease during ECMO, but rose after removal of ECMO. The proportion of neutrophils in three patients were slightly higher during ECMO than before ECMO, and did not change significantly after removal of ECMO. Compared with those before ECMO, platelet counts in three patients were significantly reduced during ECMO, and all five patients during ECMO were below normal levels. Compared with those before ECMO, the procalcitonin levels in four deaths were significantly increased during ECMO. Catheter culture of microorganism was performed in three successfully weaned patients, all of which were negative. A total of 13 literature were included, ranging from 1990 to 2019. The sample size in 6 studies was less than 10, and the sample size in 4 studies was between 10 and 20, and only 2 literatures had a sample size larger than 50. ECMO was applied in 295 burn patients with overall mortality of 48.8% (144/295), including 157 adults and 138 children. The most common indication of ECMO was severe ARDS. Among 157 adult burn patients (95 males and 65 females), 36 cases had inhalation injury. The average burn area was 27%-37%TBSA in 5 reported studies and was more than 50%TBSA in 2 reported studies. The most common mode was venovenous ECMO. ECMO treatment began 26.5 hours to 7.4 days after injury and lasted from 90 hours to 18 days, and the rate of successful weaning ranged from 50% to 100%. The most common complications were bleeding and infection. The mortality was 52.9% (83/157). MODS and sepsis were the leading causes of death. Among 138 pediatric burn patients (77 boys and 61 girls), 29 patients had inhalation injury. The average burn area was 17%-50.2%TBSA in 3 studies. ECMO treatment lasted from 165.2 hours to 324.4 hours. Bleeding was the most common complication. The mortality was 44.2% (61/138). ECMO is an effective strategy for the salvage treatment of burns complicated with ARDS. Furthermore, the prevention and treatment of bleeding, infection and organ dysfunction should be emphasized during the use of ECMO. More importantly, evidence-based guidelines for burns are urgently needed to further improve the clinical effect of ECMO.
分析体外膜肺氧合(ECMO)治疗烧伤合并急性呼吸窘迫综合征(ARDS)患者的临床效果。采用回顾性观察研究和系统评价方法。2014年3月至2020年7月,陆军军医大学第一附属医院(第三军医大学)对5例烧伤合并ARDS患者进行了ECMO治疗。5例患者均为男性,年龄40~62岁。平均烧伤总面积为体表面积的58.8%,4例有重度吸入性损伤。记录患者ECMO启动时间、持续时间和模式,以及是否成功撤机或死亡原因等。此外,分析了使用ECMO前、中、后的氧合和感染变化。以“体外膜肺氧合”“ECMO”“烧伤”“吸入性损伤”为检索词,以“标题/摘要”为检索字段,检索各数据库建库至2021年8月符合纳入标准的临床文章。从文章中提取基本信息,包括样本量、性别、年龄、烧伤总面积、吸入性损伤、ECMO指征、ECMO开始和持续时间、ECMO模式、成功撤机率、ECMO并发症、死亡率、连续肾脏替代疗法(CRRT)的联合应用等。5例患者伤后平均10.2天开始静脉-静脉ECMO,平均持续180.4小时。5例患者中有3例成功撤机,1例存活。4例患者死于多器官功能障碍综合征(MODS)和感染性休克。3例成功撤机患者在ECMO治疗期间及治疗后动脉血氧分压(PaO)和动脉血氧饱和度(SaO)较ECMO治疗前明显升高。ECMO治疗期间及治疗后吸入氧分数(FiO)降至50%以下,PaO/FiO比值升至200 mmHg以上(1 mmHg = 0.133 kPa)。此外,乳酸和呼吸频率基本下降。另外2例未能撤机患者在ECMO治疗期间PaO和SaO较ECMO治疗前持续下降,乳酸升高。未成功撤机患者在ECMO治疗前及治疗期间PaO/FiO比值小于200 mmHg,动脉血二氧化碳分压(PaCO)大于40 mmHg。与ECMO治疗前相比,ECMO治疗期间及治疗后体温无明显变化,均低于38℃。4例患者白细胞计数在ECMO治疗期间较ECMO治疗前明显下降,但撤机后升高(未成功撤机患者此项指标省略,下同)。3例患者中性粒细胞比例在ECMO治疗期间较ECMO治疗前略有升高,撤机后无明显变化。3例患者血小板计数在ECMO治疗期间较ECMO治疗前明显降低,5例患者在ECMO治疗期间均低于正常水平。4例死亡患者降钙素原水平在ECMO治疗期间较ECMO治疗前明显升高。3例成功撤机患者行导管微生物培养,结果均为阴性。共纳入1990年至2019年文献13篇。6项研究样本量小于10,4项研究样本量在10~20之间,仅