Abstract:Objective To compare the effect of interventional therapy combined with conservative treatment on the lower limb arteriosclerosis obliterans, and to analyze the risk factors that affect the prognosis of the patients.Methods From July 2016 to October 2018, 98 patients with lower limb arteriosclerosis obliterans, who received treatment in our hospital, were selected and divided into experimental group (50 cases) and control group (48 cases), according to different treatment methods. The experimental group received interventional therapy on the basis of conservative treatment, while the control group only received conservative treatment. The patient's age, sex, course of disease, drinking history, smoking history, comorbidity and laboratory indicators were recorded. The length of hospital stay, distance to lameness, Rutherford stage, ankle-brachial index (ABI) before and after treatment, clinical outcome, and adverse events were recorded. According to the prognosis, the patients were divided into the group with poor prognosis (n = 31) and the group with good prognosis (n = 67), and the risk factors influencing the prognosis were analyzed by single and multiple factors.Results Compared with the control group, the length of hospitalization was reduced, but the treatment cost was increased in the experimental group (P < 0.05). After treatment, compared with the control group, Rutherford stage was improved, and the vascular unblocked rate and the total effective rate were increased in the experimental group (P < 0.05). The claudication distance and ABI after treatment were higher in both groups than before treatment (P < 0.05), and the experimental group was better than the control group (P < 0.05). The incidence of cardiovascular and cerebrovascular events, amputation and death were lower in the experimental group than in the control group (P < 0.05). There were statistically significant differences in age, course of disease, length of hospital stay, treatment, ABI, vascular unclotting rate, fibrinogen, smoking, hypertension, diabetes, hyperlipidemia, platelet elevation, and lymphocyte lowering between the poor and good prognostic groups (P < 0.05). Multivariate analysis showed that age, conservative treatment, smoking, hypertension, diabetes, hyperlipidemia and fibrinogen were independent risk factors for poor prognosis of lower limb arteriosclerosis obliterans (P < 0.05). Age > 70 years, and fibrinogen > 4 g/L had a greater effect on the prognosis of lower limb arteriosclerosis obliterans.Conclusion Interventional treatment of arteriosclerosis obliterans of lower limbs has the advantages of high safety, good curative effect, easy recovery, and less complications. Increased age, conservative treatment, smoking, hypertension, diabetes, hyperlipidemia, and elevated fibrinogen can lead to poor prognosis in arteriosclerosis obliterans of lower limbs.