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Is there an association between anemia and diabetic foot ulcers? A systematic review and meta-analysis.

Authors:
Kaissar Yammine Fady Hayek Chahine Assi

Wound Repair Regen 2021 Feb 16. Epub 2021 Feb 16.

Department of Orthopedic Surgery, School of Medicine, Lebanese American University Medical Center-Rizk Hospital, Lebanese American University, Beirut, Lebanon.

Anemia was found to be prevalent in patients with diabetes mellitus. Higher rates of anemia were reported in patients having diabetic foot ulcers (DFU). With the presence of an altered microcirculation, the potential negative effects of anemia might impede ulcer healing leading to higher rates of amputation and mortality. Medline, Embase, Scopus, CINAHL, Cochrane Library, and Google Scholar, were searched for from inception to locate relevant papers reporting any association between anemia and diabetic foot ulcers. The meta-analysis included 15 studies with 2895 patients. The weighted prevalence anemia rates of the total, mild-to-moderate DFU, and severe DFU groups were as follows: 69.7%, 49.5%, and 73%, respectively. For the hemoglobin level outcome, the same samples yielded the following pooled means: 11.00 ± 1.13, 12.08 ± 0.8, and 10.57 ± 0.68 g/dl. Individual studies showed association between low levels of hemoglobin and higher rates of non-healing ulcer, amputation, and mortality. This review demonstrated (a) a clear association between the presence of anemia and diabetic foot ulcers, (b) a clear association between the severity of anemia and the severity of DFUs, and (c) that anemia could be a predictor of amputation and mortality. Whether anemia is a predictor of adverse outcomes or an independent risk factor is to be further investigated.

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http://dx.doi.org/10.1111/wrr.12902DOI Listing
February 2021

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