Incidence and factors associated with portal vein thrombosis in patients with acute pancreatitis: A United States national retrospective study.

ABSTRACT

BACKGROUND/OBJECTIVE: Portal vein thrombosis (PVT) is a well-known complication in patients with acute pancreatitis (AP). Limited data exist on the incidence and factors of PVT in patients with AP. We investigate the incidence and clinical predictors of PVT in AP. METHODS: We queried the 2016-2019 National Inpatient Sample database to identify patients with AP. Patients with chronic pancreatitis or pancreatic cancer were excluded. We studied demographics, comorbidities, complications, and interventions in these patients and stratified the results by the presence of PVT. A multivariate regression model was used to identify factors associated with PVT in patients with AP. We also assessed the mortality and resource utilization in patients with PVT and AP. RESULTS: Of the 1,386,389 adult patients admitted with AP, 11,135 (0.8%) patients had PVT. Women had a 15% lower risk of developing PVT (aOR-0.85, p < 0.001). There was no significant difference between the age groups in the risk of developing PVT. Hispanic patients had the lowest risk of PVT (aOR-0.74, p < 0.001). PVT was associated with pancreatic pseudocyst (aOR-4.15, p < 0.001), bacteremia (aOR-2.66, p < 0.001), sepsis (aOR-1.55, p < 0.001), shock (aOR-1.68, p < 0.001) and ileus (aOR-1.38, p < 0.001). A higher incidence of in-hospital mortality and ICU admissions was also noted in patients with PVT and AP. CONCLUSION: This study demonstrated a significant association between PVT and factors such as pancreatic pseudocyst, bacteremia, and ileus in patients with AP.