Junichi Ishigami1, Morgan E Grams2, Rakhi P Naik3, Josef Coresh1, Kunihiro Matsushita4. 1. Department of Epidemiology and. 2. Divisions of Nephrology and. 3. Hematology, Department of Medicine, Johns Hopkins University, Baltimore, Maryland. 4. Department of Epidemiology and kmatsush@jhsph.edu.
Abstract
BACKGROUND AND OBJECTIVES: Patients on dialysis are known to have higher risk for gastrointestinal (GI) bleeding. However, data on mild to moderate CKD, particularly elevated albuminuria, are limited. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Among 11,088 participants in the Atherosclerosis Risk in Communities (ARIC) Study, we investigated the association of eGFR and urinary albumin-to-creatinine ratio (ACR) with risk for hospitalization with GI bleeding. Kidney measures were assessed at visit four (1996-1998), and follow-up was continued through 2011. RESULTS: During a median follow-up of 13.9 years, 686 first incident hospitalizations with GI bleeding were observed (incidence rate, 4.9 per 1000 person-years [95% confidence interval (95% CI), 4.5 to 5.3]). Multivariable Cox proportional hazards models revealed that both lower eGFR and higher ACR were associated with higher risk for GI bleeding. With eGFR≥90 ml/min per 1.73 m2 as a reference, risk for GI bleeding was significant in moderately decreased eGFR of 30-59 ml/min per 1.73 m2 (hazard ratio [HR], 1.51; 95% CI, 1.13 to 2.02), and was highest in severely decreased eGFR<30 ml/min per 1.73 m2 (HR, 7.06; 95% CI, 3.91 to 12.76). Compared with ACR<10 mg/g, risk for GI bleeding became significantly higher in mild albuminuria with ACR 10-29 mg/g (HR, 1.36; 95% CI, 1.08 to 1.69), and was nearly double in moderate and severe albuminuria (HR, 2.13; 95% CI, 1.66 to 2.71 for ACR 30-299 mg/g, and HR, 2.07; 95% CI, 1.33 to 3.22 for ACR≥300 mg/g). These results were largely consistent in demographic and clinical subgroups and independent of incident cardiovascular events or dialysis during follow-up. CONCLUSIONS: Individuals with even mild to moderate CKD warrant clinical attention regarding the risk of hospitalization with GI bleeding.
BACKGROUND AND OBJECTIVES:Patients on dialysis are known to have higher risk for gastrointestinal (GI) bleeding. However, data on mild to moderate CKD, particularly elevated albuminuria, are limited. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Among 11,088 participants in the Atherosclerosis Risk in Communities (ARIC) Study, we investigated the association of eGFR and urinary albumin-to-creatinine ratio (ACR) with risk for hospitalization with GI bleeding. Kidney measures were assessed at visit four (1996-1998), and follow-up was continued through 2011. RESULTS: During a median follow-up of 13.9 years, 686 first incident hospitalizations with GI bleeding were observed (incidence rate, 4.9 per 1000 person-years [95% confidence interval (95% CI), 4.5 to 5.3]). Multivariable Cox proportional hazards models revealed that both lower eGFR and higher ACR were associated with higher risk for GI bleeding. With eGFR≥90 ml/min per 1.73 m2 as a reference, risk for GI bleeding was significant in moderately decreased eGFR of 30-59 ml/min per 1.73 m2 (hazard ratio [HR], 1.51; 95% CI, 1.13 to 2.02), and was highest in severely decreased eGFR<30 ml/min per 1.73 m2 (HR, 7.06; 95% CI, 3.91 to 12.76). Compared with ACR<10 mg/g, risk for GI bleeding became significantly higher in mild albuminuria with ACR 10-29 mg/g (HR, 1.36; 95% CI, 1.08 to 1.69), and was nearly double in moderate and severe albuminuria (HR, 2.13; 95% CI, 1.66 to 2.71 for ACR 30-299 mg/g, and HR, 2.07; 95% CI, 1.33 to 3.22 for ACR≥300 mg/g). These results were largely consistent in demographic and clinical subgroups and independent of incident cardiovascular events or dialysis during follow-up. CONCLUSIONS: Individuals with even mild to moderate CKD warrant clinical attention regarding the risk of hospitalization with GI bleeding.
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