Vascular complications in hospitalized patients with inflammatory bowel disease and acute gastroenteritis and colitis: A propensity score-matched study

Objectives: Atherosclerotic cardiovascular disease (ASCVD) and venous thromboembolism (VTE) are severe complications of inflammatory bowel disease (IBD). Risk factors for ASCVD and VTE in IBD are not entirely elucidated. This study investigated the incidence and risk factors for ASCVD and VTE in IBD compared to acute infective gastroenteritis and colitis (AGC). Methods: We reviewed the clinical records of inpatients with IBD and AGC over 6 years. Each group's propensity score-matched (PS) subpopulation consisted of 831 patients, ensuring a balanced comparison. Additionally, the effect of IBD on ASCVD and VTE was assessed. Results: The PS cohorts indicated a significantly higher number of ASCVD events in IBD than controls (10.1 % vs. 5.5 %, p = 0.001) and an increased prevalence of ischemic heart disease (IHD) (7.9 % vs. 3.6 %, p < 0.001). Conversely, the study groups demonstrated similar VTE incidence. IBD diagnosis, male sex, hypertension, diabetes, and the Charlson Index were independently associated with ASCVD. Age was significantly associated with VTE. Conclusions: Inpatients with IBD demonstrated an increased risk of ASCVD and IHD. IBD was an independent risk factor for ASCVD, and chronic inflammation was a significant enhancer factor for ASCVD. Aggressive control of inflammation is an essential target to reduce ASCVD risk.