Objective: This study aimed to analyze the clinical characteristics of patients with diabetic foot ulcers combined with peripheral arterial disease (PAD) and the risk factors.
Patients and methods: A retrospective study was conducted on 120 patients with diabetic foot ulcers in the Second Affiliated Hospital of Dalian Medical University from October 2018 to February 2021. The patients were divided into uncombined with the PAD group (42 cases) and combined with the PAD group (78 cases). The baseline information and clinical indicators were measured from two groups. Univariate and binary logistic regression was used to analyze the risk factors of PAD in patients with diabetic foot ulcers.
Results: The proportion of patients with age ≥ 60 years, Wagner grade 4-5 and smoking history in the combined group was higher than that in the uncombined group (p < 0.05). The diastolic blood pressure (DBP) of the combined group was lower than that of the uncombined group, while the C-reactive protein (CRP), neutrophil-to-lymphocyte ratio (NLR) and glycated hemoglobin (HbA1c) levels of the combined group were higher than those of the uncombined group (p < 0.05). Binary logistic regression analysis showed that age ≥ 60 years, high Wagner grade, smoking, elevated CRP, NLR and HbA1c levels were risk factors for patients with diabetic foot ulcer combined with PAD (OR > 1, p < 0.05). An elevated DBP level was the protective factor for PAD in patients with diabetic foot ulcer (OR < 1, p < 0.05).
Conclusions: Patients with diabetic foot ulcer combined with PAD have the clinical characteristics of poor blood pressure control, long course of disease, and low ABI value. Age ≥ 60 years, high Wagner grade, smoking history, elevated CRP, NLR and HbA1c levels are the risk factors of PAD in patients with diabetic foot ulcer. Increased DBP is protective for PAD in patients with diabetic foot ulcer.