Factors Affecting Platelet-Rich Plasma Success in Patients With Diabetic Foot Ulcer.

Introduction Diabetic foot ulcers (DFU) are one of the most common complications of diabetes mellitus (DM). The use of platelet-rich plasma (PRP) in the treatment of DFU has been increasing in recent years. In the current study, we aimed to evaluate the factors affecting the success of PRP in the management of DFU. Methods The present study was planned in a prospective manner, and we enrolled patients with DFU in the study. Patients' characteristics, DFU properties, and treatment outcomes were recorded. Patients with DFU were classified into two groups according to PRP success: healed DFU patients in Group 1 and non-healed DFU patients in Group 2. Groups were compared according to patient characteristics and treatment outcomes, and multivariate regression analysis was performed to clarify factors that predicted PRP success. Results In total, 182 patients were enrolled in the study, and DFU in 141 (77.5%) patients healed with PRP treatment. The mean body mass index (BMI) was significantly higher in the non-healed patients (p= 0.005). The smoking rate was 58.5% in the non-healed group and 39.7% in the healed group (p= 0.016). The duration of DM (17.9 years vs. 22.5 years, p= 0.003) was significantly longer, and patients with glomerular filtration rate (GFR) < 60 (44.0% vs. 63.4, p= 0.028) were significantly more common in the non-healed group. Multivariate regression analysis demonstrated that BMI ≥30 kg/mand duration of DM ≥20 years were predictive factors for PRP failure in patients with DFU (p= 0.019 and p= 0.005). Smoking and GFR <60 were significantly associated with PRP failure (p= 0.040 and p= 0.044). Conclusion In our study, it was found that PRP was an effective treatment that improved DFU in 141 out of 182 patients. Moreover, the present study demonstrated for the first time that higher BMI, longer duration of DM, smoking, and lower GFR were significantly related to PRP failure in patients with DFU.