The Effect Of The Number Of Infrapopliteal Arteries On The Curative Effect After The Stent Implantation

Objective:The objective of this study was to compare the therapeutic effects and stent patency rate of different numbers of infrapopliteal arteries on patients with superficial atherosclerosis occlusion.Methods:A retrospective analysis of patients who underwent superficial femoral artery angioplasty at Shengjing Hospital affiliated to China Medical University between January 2013 to December 2016.According to the number of infrapopliteal arteries(1,2,3),patients were divided into group A(24 petients),group B(19 patients)and group C(70 patients),total of 113 person from 50 to 89 years old,of which average age was 70.6.Post-operatively,patients were regularly reviewed by outpatient services and telephone consultations.Follow-up examination were at 6months,12 months,24 months,untill 3 years.Check-up content includes assessment of clinical signs and symptoms,ultrasound and CTA inspection of lower limb arteries.Follow-up ended when Rutherford stage greater than 2 or stent restenosis greater than50%.Results:Single factor analysis showed that patients' age,history of present hypertension,hyperlipidemia,and the number of infrapopliteal arteries could affect stent patency rate(P <0.05).Multi-factor analysis showed that high blood pressure and infrapopliteal arteries quantity were independent risk factors for postoperative stent patency rate(P < 0.05).However,differences between patient's gender,Rutherford grade,diabetes and smoking records,pre-operative ankle-brachial index had no statistical significance(P > 0.05).Within 12 months study,although there were no obvious difference between group A and B regards to stent patency rate,outcomes in group C was significantly higher than that of group A and B.Similarly,within 24 months,no obvious difference recorded between groups A and B,group C was significantly higher than A and B.Within 36 months,group C was still higher than the other two groups,group A and B were alike.Interms of symptpm relief rate,results from 12 months study showed minimal difference betweent three groups.Comparatively,after 24 month and 36 months,results from group C were significantly higher than those of group A and B,the latter two groups were again similar.Conclusion: After superficial femoral artery stenting procedure,both first phase stent patency and symptom relief rate of patients with 3 infrapopliteal arteries in affected limb was dramatically higher than those with 1 and 2 arteries.Therefore,for patients who suffer from superficial femoral arterial occlusive dissease,maximizing arterial revascularization can signifcantly improve stent patency rate.