Rates, Risk Factors, and Outcomes of Nonvariceal Upper Gastrointestinal Bleeding in Patients Hospitalized for COVID-19 in the United States.

Objective: This study aimed to investigate the incidence and predictors of non-variceal upper gastrointestinal bleeding (NVUGIB) in hospitalized patients with coronavirus disease 2019 (COVID-19), as well as the inpatient outcomes associated with this complication.

Methods: This was an analysis of the National Inpatient Sample Database from January to December 2020. Adult COVID-19 patients were categorized into two groups based on NVUGIB development during hospitalization. Multivariate logistic analysis was performed to identify predictors and outcomes associated with NVUGIB in hospitalized COVID-19 patients in the US, after adjusting for age, sex, race, and Charlson Comorbidity Index (CCI) score, using Stata/BE 17.0.

Results: Among 1 050 045 hospitalized patients, 1.87% developed NVUGIB. Asian Americans had the highest risk, followed by Native Americans, Hispanics, and African Americans, with odds ratios (ORs) of 1.70, 1.59, 1.40, and 1.14, respectively. Patients with higher CCI scores were also at greater risk (with ORs of 1.47, 2.09, and 3.45 for CCI scores of 1, 2, and 3, respectively). COVID-19 patients with NVUGIB had a higher risk of inpatient mortality (OR=3.84), acute kidney injury (OR=3.12), hypovolemic shock (OR=13.7), blood transfusion (OR=7.02), and in-hospital cardiac arrest (OR=4.02).

Conclusion: NVUGIB occurred in 1.87% of hospitalized COVID-19 patients and was associated with a threefold increase in mortality. Further research is necessary to identify strategies for reducing its incidence in COVID-19 patients with multiple risk factors.