2017
DOI: 10.1161/jaha.117.005581
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Associations of Glycemic Control With Cardiovascular Outcomes Among US Hemodialysis Patients With Diabetes Mellitus

Abstract: BackgroundThere is a lack of data on the relationship between glycemic control and cardiovascular end points in hemodialysis patients with diabetes mellitus.Methods and ResultsWe included adult Medicare‐insured patients with diabetes mellitus who initiated in‐center hemodialysis treatment from 2006 to 2008 and survived for >90 days. Quarterly mean time‐averaged glycated hemoglobin (HbA1c) values were categorized into <48 mmol/mol (<6.5%) (reference), 48 to <58 mmol/mol (6.5% to <7.5%), 58 to <69 mmol/mol (7.5%… Show more

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Cited by 14 publications
(10 citation statements)
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References 38 publications
(82 reference statements)
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“…HbA1c values in groups with a worse and better outcome in our study were similar to those described in a US cohort study involving 16 387 diabetic patients who started HD treatment from 2006 to 2008 and survived for > 90 days. In that study, higher HbA1c level (7.5–8.5% and >8.5%) was significantly ( P =0.01) associated with higher rates of cardiovascular mortality (16%, 95% CI 2–32% and 18%, 95% CI 1–37%, respectively) and nonfatal myocardial infarction (MI) (16%, 95% CI 1–33% and 15%, 95% CI 1–32%, respectively), but not with stroke, peripheral arterial disease, or all-cause mortality, compared with the reference group (HbA1c <6.5%) [ 21 ]. In a large 6-year US study, which included 54 757 patients on HD, HbA1c levels <6% and >8% were associated with increased mortality [ 22 ].…”
Section: Discussionmentioning
confidence: 99%
“…HbA1c values in groups with a worse and better outcome in our study were similar to those described in a US cohort study involving 16 387 diabetic patients who started HD treatment from 2006 to 2008 and survived for > 90 days. In that study, higher HbA1c level (7.5–8.5% and >8.5%) was significantly ( P =0.01) associated with higher rates of cardiovascular mortality (16%, 95% CI 2–32% and 18%, 95% CI 1–37%, respectively) and nonfatal myocardial infarction (MI) (16%, 95% CI 1–33% and 15%, 95% CI 1–32%, respectively), but not with stroke, peripheral arterial disease, or all-cause mortality, compared with the reference group (HbA1c <6.5%) [ 21 ]. In a large 6-year US study, which included 54 757 patients on HD, HbA1c levels <6% and >8% were associated with increased mortality [ 22 ].…”
Section: Discussionmentioning
confidence: 99%
“…Patients on hemodialysis may have falsely low HbA1c levels due to shorter erythrocyte lifespan, lower erythrocyte concentrations seen in anemia, or predominance of younger erythrocytes, which occur in patients who are on iron replacement therapy or erythropoiesis-stimulating agents. 10,36 Third, because we abstracted the data on comorbidities from an administrative database, we were not able to adjust for the severity of these conditions. However, the under-ascertainment of comorbidities would have led to nondifferential bias, biasing the results toward the null and underestimating the true effect.…”
Section: Discussionmentioning
confidence: 99%
“…Description on how reported comorbidities and socioeconomic data were obtained has been reported previously. 10 Briefly, comorbidities were obtained from claims using the International Classification of Diseases, Ninth Revision, diagnosis and procedure codes from at least 1 inpatient or 2 or more outpatient encounters separated by at least 1 day. We combined information from both the Medical Evidence Report and claims data to define baseline comorbidities and used claims thereafter to create quarterly-updated comorbidities.…”
Section: Covariatesmentioning
confidence: 99%
“…, Patients with type 2 diabetes with ESRD undergoing haemodialysis are at very high cardiovascular risk . In these patients, poor glycaemic balance (ie, HbA1c ≥7.5% or serum glucose ≥200 mg/dL) was associated with increased cardiovascular and all‐cause mortality . Therefore, improving patients’ glycaemic balance is mandatory, often resulting in multiple daily insulin injections.…”
Section: Introductionmentioning
confidence: 99%