Relationship between different healing degree and C peptide in elderly patients with diabetic foot ulcers

Objective:To explore the relationship between different healing degree and C peptide in elderly patients with diabetic foot ulcers.Methods:Totally, two hundred and forty-one DFU patients were selected into our research from September 2nd, 2011 to September 2nd, 2012. After admission, the patients' sex, age, the course of diabetes, the days of hospitalization, and BMI were recorded. After examination, blood routine and blood biochemistry, urine routine, hepatorenal work were recorded. Follow up 5 years, patients with unhealed ulcers were selected into bad prognosis group during follow-up, and patients with ulcerative healing into good prognosis group. Single factor analysis showed factors affecting the healing of DFU patients;Cox proportional risk model was further evaluated the effect of all factors with statistical significance on the healing of DFU patients. Using the ROC curve to analyze the statistically significant factors and to calculate the area under the curve to evaluate the predictive ability of the healing of the patients with DFU.Results: At the end of the follow-up, 6 patients were lost, 177 had the end point, and the healing rate was 73.44%. Single factor and multifactor analysis showed that the course of diabetes and HbA1C were independent risk factors affecting the prognosis. FCP was an independent protective factor affecting the prognosis. In ROC, the AUC of diabetes course was 0.754 under the ROC curve. The AUC of HbA1C under the line is 0.791, while the AUC of FCP level is 0.581 under the ROC curve.Conclusion: Low FCP is an independent risk factor for DFU healing, but FCP has little predictive effect on patient healing.