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Diabetic foot is a common complication of diabetes mellitus (DM). The Wagner classification is mostly used to grade its severity. The correlation between the hemoglobin A1c (HbA1c) and the Wagner classification is still controversial. Therefore, the purpose of this study is to determine the correlation of HbA1c with Wagner classification in patients with diabetic foot.  Materials and methods  This cross-sectional study was conducted at a major hospital in Shaheed Benazirabad in which 88 patients aged 18-65 years, of either gender, with a known history of DM type I or type II, and diagnosed with diabetic foot were enrolled for six months. Blood samples were collected to check the HbA1c levels. Wagner classification grading was performed after the examination of diabetic foot ulcers. Demographics such as age, gender, duration of DM, and other risk factors of foot ulcers were also noted. The mean and standard deviation for continuous variables, such as age and HbA1c level, and the frequency and percentage for categorical variables, such as distribution of age, distribution of HbA1c, gender, duration of DM, grades of Wagner classification, and other risk factors of foot ulcers, were calculated. The correlation of HbA1c with Wagner classification was also calculated by applying the chi-square test and taking p ≤ 0.05 as significant.  Results  The mean age of the study population was 47.4 ± 10.6 years. Of the 88 patients, 15 (17.04%) were 25-35 years of age, 34 (38.63%) were 36-50 years of age, and 39 (44.31%) were 51-65 years of age; 45 (51.13%) patients were males and 43 (48.86%) patients were females. The mean HbA1c level of the study population was 9.07 ± 1.65%; 5 (5.68%) patients had 6.5-7.5%, 34 (38.63%) patients had 7.6-8.5%, 24 (27.27%) patients had 8.6-9.5%, and 25 (28.41%) patients had an HbA1c level of >9.5%. Twelve (13.63%) patients had ≤ 7 years, 18 (20.45%) had 8-15 years, and 58 (65.9%) had >15 years of duration of DM. Zero (0%) patients had grade 0, 1 (1.13%) patient had grade 1, 6 (6.81%) patients had grade 2, 29 (32.95%) patients had grade 3, 32 (36.36%) patients had grade 4, and 20 (22.72%) patients had grade 5 of Wagner classification. 23 (26.13%) patients had foot abnormalities, 19 (21.59%) patients had nephropathy, 13 (14.77%) patients had neuropathy, 14 (15.91%) patients had hypertension, 9 (10.22%) patients had retinopathy, 3 (3.41%) patients had foot ulcers/toe amputation, 2 (2.27%) patients had a cognitive deficit, and 5 (5.68%) patients had cardiovascular diseases. The correlation of HbA1c with Wagner classification was found statistically significant with p < 0.00001.  Conclusions  The older age, male gender, longer duration of DM, increased HbA1c, and previously existing foot abnormalities in diabetic patients are the risk factors of diabetic foot. The monitoring of HbA1c can help predict the diabetic foot in the aforesaid high-risk diabetics because the HbA1c linearly rises with the higher grades of Wagner classification of diabetic foot. Subsequently, the strict control of HbA1c as well as patient education about proper foot care can help prevent diabetic foot and its complications. However, more studies on larger scales are needed to establish the factual relationship between HbA1c and Wagner classification.

Correlation of Hemoglobin A1c With Wagner Classification in Patients With Diabetic Foot