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. 2025 Jan;27(1):102-112.
doi: 10.5853/jos.2024.00661. Epub 2025 Jan 31.

Long-Term Incidence of Gastrointestinal Bleeding Following Ischemic Stroke

Affiliations

Long-Term Incidence of Gastrointestinal Bleeding Following Ischemic Stroke

Jun Yup Kim et al. J Stroke. 2025 Jan.

Abstract

Background and purpose: Previous research on patients with acute ischemic stroke (AIS) has shown a 0.5% incidence of major gastrointestinal bleeding (GIB) requiring blood transfusion during hospitalization. The existing literature has insufficiently explored the long-term incidence in this population despite the decremental impact of GIB on stroke outcomes.

Methods: We analyzed the data from a cohort of patients with AIS admitted to 14 hospitals as part of a nationwide multicenter prospective stroke registry between 2011 and 2013. These patients were followed up for up to 6 years. The occurrence of major GIB events, defined as GIB necessitating at least two units of blood transfusion, was tracked using the National Health Insurance Service claims data.

Results: Among 10,818 patients with AIS (male, 59%; mean age, 68±13 years), 947 (8.8%) experienced 1,224 episodes of major GIB over a median follow-up duration of 3.1 years. Remarkably, 20% of 947 patients experienced multiple episodes of major GIB. The incidence peaked in the first month after AIS, reaching 19.2 per 100 person-years, and gradually decreased to approximately one-sixth of this rate by the 2nd year with subsequent stabilization. Multivariable analysis identified the following predictors of major GIB: anemia, estimated glomerular filtration rate <60 mL/min/1.73 m2 , and a 3-month modified Rankin Scale score of ≥4.

Conclusion: Patients with AIS are susceptible to major GIB, particularly in the first month after the onset of AIS, with the risk decreasing thereafter. Implementing preventive strategies may be important, especially for patients with anemia and impaired renal function at stroke onset and those with a disabling stroke.

Keywords: Gastrointestinal bleeding; Ischemic stroke; Medical complications.

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Conflict of interest statement

Conflicts of interest

H-J Bae reports grants from AstraZeneca, Bayer Korea, Bristol Myers Squibb Korea, Chong Gun Dang Pharmaceutical Corp., Dong-A ST, Jeil Pharmaceutical Co., Ltd., Korean Drug Co., Ltd., Samjin Pharm, Takeda Pharmaceuticals Korea Co., Ltd., and Yuhan Corporation; roles as a principal investigator or co-investigator of clinical trials sponsored by Bayer, Bristol Myers Squibb, GNT Pharma, Korean Drug Co., Ltd., and Shinpoong Pharm. Co., Ltd.; and personal fees from Amgen Korea, Bayer, Daiichi Sankyo, JW Pharmaceutical, Hanmi Pharmaceutical Co., Ltd., Otsuka Korea, SK Chemicals, and Viatris Korea outside the submitted work. The remaining authors have no financial conflicts of interest.

Figures

Figure 1.
Figure 1.
Time distribution of major gastrointestinal bleeding events following acute ischemic stroke. Major gastrointestinal bleeding was defined as bleeding leading to the transfusion of two or more units of whole blood or red blood cells.
Figure 2.
Figure 2.
Cumulative incidence function for major gastrointestinal bleeding following acute ischemic stroke.
Figure 3.
Figure 3.
Adjusted IRR (95% CI) of selected variables for major GI bleeding following acute ischemic stroke. GI, gastrointestinal; NIHSS, National Institutes of Health Stroke Scale; IV tPA, intravenous tissue plasminogen activator; NSAID, nonsteroidal anti-inflammatory drug; eGFR, estimated glomerular filtration rate; ASA, aspirin; AP, antiplatelet; AC, anticoagulant; mRS, modified Rankin Scale; IRR, incidence rate ratio; CI, confidence interval.

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