摘要目的:探讨急性胰腺炎(AP)伴发门静脉系统血栓(PVST)的临床特点和症状性PVST的临床预测。方法:回顾性分析2014年1月至2019年12月昆明医科大学第一附属医院和第二附属医院符合AP并发PVST诊断标准并有完整临床资料的住院患者152例，对其临床特点进行分析。按照是否发生PVST所致临床表现(食管-胃底静脉曲张破裂出血、持续性腹水、肠缺血)，将AP并发PVST患者分为症状组(48例)和无症状组(104例)。比较症状组与无症状组的一般资料、实验室检查指标、急性生理学和慢性健康状况评价Ⅱ(APACHE Ⅱ)、Balthazar CT评分、局部和全身并发症等差异。采用两独立样本 t检验、两样本秩和检验、卡方检验进行统计学比较，二分类logistic回归进行多因素分析。 结果:重症急性胰腺炎(SAP)并发PVST多见，占73.0%(111/152)，医院内病死率为14.5%(22/152)。脾静脉(46.1%，70/152)为最常见的单支受累血管。症状组住院时间长于无症状组，住院费用和医院内病死率均高于无症状组[分别为(26.31±19.38) d比(15.11±9.31) d、(103 463.68±15 312.74)元比(37 199.38±4 647.17)元、25.0%(12/48)比9.6%(10/104)]，差异均有统计学意义( t＝-3.809、-4.141， χ2＝6.280； P均<0.05)。症状组LDH、CRP、PT均高于无症状组[4.78 μmol·s -1·L -1(2.96 μmol·s -1·L -1，7.82 μmol·s -1·L -1)比4.42 μmol·s -1·L -1(3.29 μmol·s -1·L -1，9.30 μmol·s -1·L -1)、69.53 mg/L(29.49 mg/L，147.14 mg/L)比40.90 mg/L(8.88 mg/L，104.89 mg/L)、(16.88±8.23) s比(14.12±1.59) s]，而血细胞比容、血钙水平均低于无症状组[(34.97±8.96)%比(39.18±7.17)%、(2.01±0.32) mmol/L比(2.17±0.19) mmol/L]，差异均有统计学意义( Z＝-2.067、-1.977， t＝-2.281、3.072、3.083； P均<0.05)。症状组APACHE Ⅱ、Balthazar CT评分、局部并发症胰腺坏死发生率，以及全身并发症腹腔出血、感染性休克、急性呼吸窘迫综合征、肺部感染和胸腔积液发生率均高于无症状组[分别为(7.21±3.84)分比(5.27±2.31)分、(7.10±1.57)分比(4.83±1.87)分、87.5%(42/48)比28.8%(30/104)、10.4%(5/48)比1.9%(2/104)、18.8%(9/48)比1.9%(2/104)、25.0%(12/48)比3.8%(4/104)、91.7%(44/48)比60.6%(63/104)、85.4%(41/48)比49.0%(51/104)]，差异均有统计学意义( t＝-3.241、-7.331， χ2＝45.320、5.393、13.852、15.604、15.323、18.191； P均<0.05)。二分类多因素logistic回归分析结果显示，Balthazar CT评分是症状性PVST的独立危险因素( P<0.01)， OR值(95% CI)为1.79(1.41～2.29)。 结论:Balthazar CT评分是AP患者并发症状性PVST的影响因素，对评分高的患者应早期干预治疗以改善预后。

abstractsObjective:To explore the clinical features of acute pancreatitis (AP) complicated with portal vein system thrombosis (PVST) and the clinical prediction of symptomatic PVST.Methods:From January 2014 to December 2019, at First Affiliated Hospital and Second Affiliated Hospital of Kunming Medical University, 152 hospitalized patients who met the diagnostic criteria of AP complicated with PVST and had complete clinical data were retrospectively analyzed, and the clinical characteristics of them were analyzed. According to whether there were clinical manifestations caused by PVST (esophago-gastric variceal bleeding, persistent ascites, intestinal ischemia), AP patients complicated with PVST were divided into symptomatic group ( n=48) and asymptomatic group ( n=104). The differences in general information, laboratory test indicators, acute physiology and chronic health evaluation Ⅱ (APACHE Ⅱ), Balthazar computed tomography (CT) score, local and systemic complications were compared between symptomatic group and asymptomatic group. Two independent sample t test, two sample rank sum test, and chi-square test were used for statistical analysis. The binary logistic regression was used for multivariate analysis. Results:The severe acute pancreatitis (SAP) complicated with PVST was common, accounted for 73.0% (111/152), and the hospital mortality rate was 14.5% (22/152). The splenic vein (46.1%, 70/152) was the most common single vessel involved. The hospital stay of the symptomatic group was longer than that of the asymptomatic group, the hospitalization costs and hospital mortality of the symptomatic group were both higher than those of the asymptomatic group ((26.31±19.38) d vs. (15.11±9.31) d, (103 463.68±15 312.74) yuan vs. (37 199.38±4 647.17) yuan, 25.0%, 12/48 vs. 9.6%, 10/104, respectively), and the differences were statistically significant ( t=-3.809 and -4.141, χ2=6.280; all P<0.05). The lactic acid dehydrogenase, C-reactive protein, and prothrombin time of the symptomatic group were all higher than those of the asymptomatic group (4.78 μmol·s -1·L -1, 2.96 μmol·s -1·L -1 to 7.82 μmol·s -1·L -1 vs. 4.42 μmol·s -1·L -1, 3.29 μmol·s -1·L -1 to 9.30 μmol·s -1·L -1; 69.53 mg/L, 29.49 mg/L to 147.14 mg/L vs. 40.90 mg/L, 8.88 mg/L to 104.89 mg/L; (16.88±8.23) s vs. (14.12±1.59) s), however the hematocrit and blood calcium in the symptomatic group were both lower than those of the asymptomatic group ((34.97±8.96)% vs. (39.18±7.17)%, (2.01±0.32) mmol/L vs. (2.17±0.19) mmol/L), and the differences were all statistically significant ( Z=-2.067 and -1.977, t=-2.281, 3.072 and 3.083; all P<0.05). The scores of APACHE Ⅱand Balthazar CT, the rate of local complications of pancreatic necrosis, and systemic complications including abdominal hemorrhage, septic shock, acute respiratory distress syndrome, lung infection and pleural effusion of the symptomatic group were higher than those of the asymptomatic group (7.21±3.84 vs. 5.27±2.31, 7.10±1.57 vs. 4.83±1.87, 87.5%, 42/48 vs. 28.8%, 30/104; 10.4%, 5/48 vs. 1.9%, 2/104; 18.8%, 9/48 vs. 1.9%, 2/104; 25.0%, 12/48 vs. 3.8%, 4/104; 91.7%, 44/48 vs. 60.6%, 63/104; 85.4%, 41/48 vs. 49.0%, 51/104; respectively), and the differences were statistically significant ( t=-3.241 and -7.331, χ2=45.320, 5.393, 13.852, 15.604, 15.323 and 18.191; all P<0.05). The results of binary logistic regression showed that Balthazar CT score was an independent risk factor for symptomatic PVST ( P<0.01), and odds ratio (95% confidence interval) was 1.79 (1.41 to 2.29). Conclusions:Balthazar CT score is an influencing factor of symptomatic PVST in AP patients, and patients with high scores should be treated early to improve the prognosis.