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Current Aging Science

Author(s): Yen H. Wee and Mahesan Anpalahan*

DOI: 10.2174/1874609812666190627154316

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The Role of Older Age in Normocytic Anaemia in Type 2 Diabetes Mellitus

Page: [76 - 83] Pages: 8

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Abstract

Background: Older age has a significant association with anaemia. However, this has not been adequately investigated in the context of specific comorbidities such as Type 2 Diabetes Mellitus (T2DM).

Objectives: To investigate the role of age in Normocytic Anaemia (NCA) and the adverse outcomes of NCA in T2DM.

Methods: Patients with NCA, either unexplained or related to Chronic Kidney Disease (CKD), were recruited from a diabetic clinic over six months. Anaemia was defined as a haemoglobin(Hb) < 130g/l for men and <120g/l for women. The relevant data were obtained by interviewing patients and review of medical records. Patients were followed for 12 months for pre-defined adverse outcomes.

Results: Of the 354 patients assessed, 203 were included (mean age 63.12 ± 13.62 years, males 49.8%). The prevalence of NCA was 24% (49). Older age had a significant univariate association with NCA (p < 0.001) and this remained significant (adjusted Odds Ratio (OR) 1.24, 95% CI 1.16- 5.29) after adjusting for estimated Glomerular Filtration Rate (eGFR) < 60ml/min/1.73m2, albuminuria and other potential confounders. Adjusting for eGFR as a continuous variable also confirmed this significant association (OR1.15, 95% CI 1.10-7.01). In the subgroup of patients aged ≥ 75 years, only older age was significantly associated with NCA. The incidence of all-cause mortality and composite cardiovascular/cerebrovascular events was similar in the anaemic and nonanaemic groups.

Conclusion: NCA is common in T2DM and has a significant association with older age independent of CKD. The anaemia is mild in most patients and appears to have a benign course.

Keywords: Older age, type 2 diabetes mellitus, normocytic anaemia, adverse outcomes, chronic kidney disease, cardiovascular events, mortality.

Graphical Abstract

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