# Thrombotic Long-Term Consequences of SARS-CoV-2 Infection in Patients with Compensated Cirrhosis: A Propensity Score-Matched Analysis of a U.S. Database

## TL;DR

This study finds that SARS-CoV-2 infection increases the risk of blood clots in patients with compensated cirrhosis over several years.

## Contribution

The novel contribution is identifying long-term thrombotic risks in cirrhosis patients post-SARS-CoV-2 infection using a matched cohort analysis.

## Key findings

- SARS-CoV-2-positive patients had higher rates of portal vein thrombosis (PVT) at 6 months, 1 year, and 3 years.
- The infection was also linked to increased deep venous thrombosis (DVT) and pulmonary embolism (PE) rates over the same periods.
- These findings suggest a persistent hypercoagulable state in cirrhosis patients following SARS-CoV-2 infection.

## Abstract

Background: Cirrhosis causes an imbalance in the coagulation pathway and leads to a tendency for both bleeding and clotting. SARS-CoV-2 has been reported to be associated with a hypercoagulable state. This study examines SARS-CoV-2’s impact on hemostasis in compensated patients with cirrhosis. Methods: We analyzed the US Collaborative Network, which comprises 63 HCOs in the U.S.A. Compensated cirrhosis patients were split into two groups: SARS-CoV-2-positive and -negative. Patients’ baseline characteristics were used in a 1:1 propensity score-matched module to create comparable cohorts. We compared the risk of portal vein thrombosis (PVT), deep venous thrombosis (DVT), and pulmonary embolism (PE) at 6 months, and 1 and 3 years. Results: Of 330,521 patients, 27% tested positive and 73% remained negative. After PSM, both cohorts included 74,738 patients. Patients with SARS-CoV-2 had a higher rate of PVT compared to those without at 6 months (0.63% vs 0.5%, p < 0.05), 1 year (0.8% vs 0.6%, p < 0.05), and 3 years (1% vs. 0.7%, p < 0.05), a higher rate of DVT at 6 months (0.8% vs. 0.4%, p < 0.05), 1 year (1% vs. 0.5%, p < 0.05), and 3 years (1.4% vs. 0.8%, p < 0.05), and a higher rate of PE at 6 months (0.6% vs. 0.3%, p < 0.05), 1 year (0.7% vs. 0.4%, p < 0.05), and 3 years (1% vs. 0.6%, p < 0.05). Conclusions: The presence of SARS-CoV-2 infection in patients with compensated cirrhosis was associated with a higher rate of PVT, DVT, and PE at 6 months, and 1 and 3 years.