摘要目的:分析新型冠状病毒奥密克戎突变株感染合并心房颤动（房颤）患者的临床特征及预后。方法:选择2022年3月23日至5月15日上海市新冠肺炎定点医院周浦医院收治的2 675例年龄≥50岁的本土新型冠状病毒肺炎（新冠肺炎）病例，将合并房颤患者分为轻型组、普通型组和重型/危重型组。收集3组患者的临床资料、影像学检查和实验室检查结果及预后并进行比较。结果:2 675例新冠肺炎患者中位年龄69.0（60.0，81.0）岁，其中135例合并房颤，房颤发生率为5.05%。合并房颤患者的年龄为55~101岁，中位年龄84.0（74.0，89.0）岁；轻型组68例，普通型组30例，重型/危重型组37例（包括重型9例、危重型28例）。重型/危重型组患者年龄55~75岁比例为43.2%，新冠疫苗接种率为32.4%；新发房颤比例在3组中最高，长程持续性房颤比例则以轻型组最高（58.8%）。重型/危重型组伴发热（29.7%）、肝功能不全（13.5%）、肾功能不全（46.0%）、2型糖尿病比例（46.0%）及心功能不全NYHA分级高〔与轻型和普通型比较分别为（分）：1.8±1.1比1.1±0.8、1.2±0.7，均 P<0.05〕。实验室检查方面，与轻型组和普通型组比较，重型/危重型患者的C-反应蛋白（CRP）、丙氨酸转氨酶（ALT）、天冬氨酸转氨酶（AST）水平均明显升高〔CRP（mg/L）：27.2（6.0，60.8）比7.6（3.1，19.3）、12.8（4.9，26.3），ALT（U/L）：31.3±15.4比15.4±9.3、19.3±11.7，AST（U/L）：78.0±21.7比34.7±15.6、38.1±24.4，均 P<0.05〕，血红蛋白（Hb）、白蛋白（ALB）水平均明显降低〔Hb（g/L）：105.3±22.5比125.8±25.4、123.0±20.4，ALB（g/L）：33.7±6.0比39.0±5.5、39.6±13.1，均 P<0.05〕；另外，重型/危重型组肌酸激酶同工酶（CK-MB）明显高于轻型组〔μg/L：2.5（1.5，3.4）比2.2（1.2，2.8）， P<0.05〕。治疗方面，3组间使用抗血小板药物和低分子肝素比例比较差异均有统计学意义，其中重型/危重型组使用抗血小板药物比例最低（27.0%），使用低分子肝素比例则高于轻型组〔81.1%（30/37）比51.5%（35/68）， P<0.05〕。新冠肺炎合并房颤患者病死率为18.5%（25/135），均为危重型患者，其中脑栓塞、肺栓塞及脑出血者占32.0%（8/25），40.0%（10/25）死于多器官衰竭（40.0%合并消化道出血），20.0%（5/25）死于心脏性猝死，12.0%（3/25）死于呼吸衰竭；而轻型、普通型及9例重型患者均无死亡。 结论:奥密克戎变异株感染合并房颤的重型/危重型新冠肺炎患者预后更差，病死率高，主要死因为心、肺、脑等多器官衰竭及栓塞性疾病。

abstractsObjective:To investigate the clinical characteristics and prognosis of coronavirus disease 2019 (COVID-19) patients with Omicron variant combined with atrial fibrillation (AF).Methods:From March 23, 2022 to May 15, 2022, 2 675 aged ≥ 50 years old COVID-19 patients with AF were admitted to Zhoupu Hospital, the designated hospital for COVID-19 in Shanghai. Patients were divided into mild symptoms group, normal group, and serious/critical group according to the symptoms. The clinical data, imaging examination and laboratory results and prognosis of the three group patients were compared.Results:The median age of 2 675 COVID-19 patients was 69.0 (60.0, 81.0) years old, the incidence of AF was 5.05% (135/2 675), the age range of AF patients were from 55 to 101 years old, with a median age of 84.0 (74.0, 89.0), and the number of mild symptoms, normal, serious/critical patients were 68, 30, 37, respectively, including 9 of serious and 28 of critical patients. In the serious/critical patients, aged 55-75 years old accounted for 43.2%, the rate of 2019 novel coronavirus vaccination was 32.4%. The identified new-onset AF was the highest among the three groups, but the rate of persistent AF was the highest in the mild symptoms group (58.8%). The severe/critical group complicated with fever (29.7%), hepatic insufficiency (13.5%), renal insufficiency (46.0%), type 2 diabetes (46.0%), and heart failure were higher in NYHA classification [compared with the mild symptoms and normal group (score): 1.8±1.1 vs. 1.1±0.8, 1.2±0.7, respectively, all P < 0.05]. In term of laboratory examinations, C-reactive protein (CRP), alanine aminotransferase (ALT), and aspartate aminotransferase (AST) levels were significantly higher in serious/critical patients compared to the mild symptoms and normal groups [CRP (mg/L): 27.2 (6.0, 60.8) vs. 7.6 (3.1, 19.3), 12.8 (4.9, 26.3), ALT (U/L): 31.3±15.4 vs. 15.4±9.3, 19.3±11.7, AST (U/L): 78.0±21.7 vs. 34.7±15.6, 38.1±24.4, all P < 0.05]. The hemoglobin (Hb) and albumin (ALB) levels were significantly lower than those in the mild symptoms and normal groups [Hb (g/L): 105.3±22.5 vs. 125.8±25.4, 123.0±20.4, ALB (g/L): 33.7±6.0 vs. 39.0±5.5 and 39.6±13.1, all P < 0.05]. In addition, MB isoenzyme of creatine kinase (CK-MB) was significantly higher in the serious/critical group than that in the mild symptoms group [μg/L: 2.5 (1.5, 3.4) vs. 2.2 (1.2, 2.8), P < 0.05]. In terms of the treatment, the percentage of antiplatelet agents and low-molecular heparin ratio compared among the three groups were statistically significant, with the serious/critical group using the lowest percentage of antiplatelet agents (27.0%) and a higher percentage of low-molecular heparin usage than that in mild symptoms group [81.1% (30/37) vs. 51.5% (35/68), P < 0.05]. In terms of prognosis, the mortality of patients with AF was 18.5% (25/135), all of whom were critical ill, including 32.0% (8/25) with cerebral embolism, pulmonary embolism and cerebral hemorrhage. Among them, 40.0% (10/25) died of multiple organ failure (40.0% combined with gastrointestinal hemorrhage), 20.0% (5/25) died of heart failure, and 12.0% (3/25) died of respiratory failure; while there were no death cases recorded in the mild symptoms, normal group and 9 serious patients. Conclusions:The serious/critical patients infected with COVID-19 Omicron variant with AF, have a worse prognosis and high mortality. Multiple organ failure, heart failure, sudden cardiac death, respiratory failure and embolic disease are the major causes of death.