• R X Chen, J Y Shi, Y Q Ren, F Wang, Y P Zhou, and Y Cui.
• Department of Critical Care Medicine, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai 200062, China.
• Zhonghua Yi Xue Za Zhi. 2019 Dec 17; 99 (47): 3715-3719.

AbstractObjective: To observe the clinical features and effects of extracorporeal membrane oxygenation (ECMO) in critically ill children with acute fulminant myocarditis (AFM). Methods: A retrospective analysis was performed in pediatric patients with AFM requiring ECMO, from December 2015 to December 2018, who were admitted to the Pediatric Intensive Care Unit (PICU) in Shanghai Children's Hospital. According to whether patient was alive at least 48 hours after weaning, the children were divided into successful weaning group (9 cases) and unsucessful weaning group (3 cases). The factors related to successful ECMO weaning were explored. The changes of clinical and biochemical parameters before and after ECMO treatment in successful weaning group were analyzed. Continuous variables were presented as median (inter quartile range) for abnormal distribution data, and Mann-Whitney U test was used to compare the data. Results: A total of 12 pediatric patients including 4 males and 8 females were enrolled in this study. The median body weight was 20 (17, 36) kg, and the median age was 66 (48, 103) months. Nine cases were successfully weaned from ECMO, and 8 cases survived to discharge, and 4 cases died in the hospital. The median interval between symptoms onset and ECMO establishment was 3.0 (2.2, 4.0) days, the median duration of ECMO support was 120 (68, 152) hours. In the unsuccessful weaning group, patients displayed higher levels of initiallactic acid (LA), higher vasoactive-inotropic score (VIS), and longer QRS duration before ECMO establishment when compared with those in the successful weaning group (all P<0.05). After ECMO establishment, mean arterial pressure (MAP), systemic central venous oxygen saturation, LA, myocardial injury markers and left ventricular ejection fraction were all significantly improved in the successful weaning group (all P<0.05). Conclusion: In pediatric AFM patients, serum LA level, VIS and QRS duration before ECMO establishment are associated with successful ECMO weaning.

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