# Balancing Act: Evaluating the Impact of Direct Oral Anticoagulants on Gastrointestinal Complications in Atrial Fibrillation Patients

## TL;DR

This study examines how direct oral anticoagulants affect gastrointestinal complications in atrial fibrillation patients.

## Contribution

The study provides new insights into the clinical impact of DOACs on GI complications using a large U.S. healthcare database.

## Key findings

- Patients in the post-2010 cohort required more blood transfusions, indicating higher bleeding risks.
- More post-2010 patients underwent upper endoscopies, suggesting increased clinical vigilance.
- A higher number of patients had shock diagnoses after 2010, possibly linked to DOAC use.

## Abstract

Atrial fibrillation (AF) is commonly treated with anticoagulant therapy, which is effective in reducing stroke risk. However, it can increase the likelihood of gastrointestinal (GI) complications. The literature on GI bleeding related to direct oral anticoagulants (DOACs) has expanded significantly since their approval, revealing both benefits and risks. Data from 66 healthcare organizations across the United States in the TriNetX database were studied. Adult patients with a history of AF and a subsequent history of GI bleeding were included. The study population was divided into pre-2010 and post-2010 cohorts. Our results showed there were statistically significant differences between patients in the post-2010 group and those in the pre-2010 group in their need for blood transfusion. There was also a statistically significant difference in the number of patients who needed an upper endoscopy. Patients who had an International Classification of Diseases (ICD)-10 code of any type of shock showed statistical significance with more patients having shock as a diagnosis after 2010 versus before. The results of this study reveal significant clinical implications following the introduction of DOACs in managing AF. The increase in blood transfusions likely reflects heightened bleeding risks associated with DOACs, particularly in patients with pre-existing GI issues. Additionally, the rise in upper endoscopies suggests clinicians have become more proactive in investigating GI complications, driven by increased awareness of anticoagulant risks.