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2020年国际重症医学主要进展有：对强制施行脓毒症1 h集束化治疗策略效果的反思仍在继续；以大剂量维生素C为代表的“代谢复苏”疗法未能获得阳性结论；新型冠状病毒肺炎疫情仍在肆虐，目前有证据表明地塞米松、瑞德西韦或干扰素β-1b（IFNβ-1b）、洛匹那韦/利托那韦与利巴韦林的联合治疗较有希望；无论是机械通气患者还是急性呼吸窘迫综合征（ARDS），保守性氧疗均未见显著优势；机械通气的肺-膈保护性通气理念值得期待；应激性溃疡的预防及高危上消化道出血的内镜干预时间均无阳性证据；同样，对重症急性肾损伤（AKI）积极的肾脏替代治疗（RRT）时机也未显示出阳性疗效；最后，人工智能在ARDS分型以及预测脓毒症方面显示出很好的应用前景。“,”The main progress in international critical care medicine in 2020 are: the reflections on the mandatory of implementation of the 1-hour cluster treatment strategy for sepsis are still continuing; the “metabolic resuscitation” therapy, represented by large dose of vitamin C, failed to yield positive results; the global epidemic of coronavirus disease 2019 (COVID-19) continues to spread, with evidences indicating Dexamethasone, Remdesivir or interferon β-1b (IFNβ-1b), Lopinavir/Ritonavir and ribavirin as promising therapy; conservative oxygen therapy did not exert positive effects neither for mechanical ventilated patients nor for acute respiratory distress syndrome (ARDS) patient; the concept of lung- and diaphragm-protective mechanical ventilation illuminates a new opportunity to potentially improve clinical outcomes for critically ill patients; there was no positive evidence for stress ulcer prophylaxis and timing of endoscopy for severe acute upper gastrointestinal bleeding; early initiation of renal-replacement therapy (RRT) for critically ill patients with acute kidney injury (AKI) has not shown positive effect. At last, artificial intelligence (AI) has shown good potential in identifying ARDS phenotypes and early predicting sepsis.