Objective
To determine the incidence and characteristics of recurrent disease after femoropopliteal angioplasty, following either selective or routine stenting of diseased site(s).
Methods
Retrospective analysis of a prospectively maintained database for femoropopliteal interventions from 6/03 to 7/10 was performed. Interventions during this period were from a single institution, followed at 1, 3 and 6 months after initial intervention and on a semiannual basis thereafter with clinical examination and duplex ultrasound. Two groups were identified, Group RS (all diseased areas are routinely stented) versus Group SS (selective stenting for only segments which exhibited compromised flow from residual stenosis or significant dissection). Those patients who developed recurrent symptoms (claudication, rest pain, etc.), decrease in ABI (>0.2), or duplex documentation of a significant (> 80%) recurrent stenosis, underwent re-intervention. Patient demographics, co-morbidities, TASC II classification, run off, and degree of calcification (none, mild, moderate, severe) at initial intervention were recorded. Time to re-intervention and recurrence pattern were recorded for both groups.
Results
746 endovascular interventions in 477 patients were performed during the study period. Total re-intervention rate, including bypass, amputation, and asymptomatic occlusion after initial intervention, was 36.48 % (Group SS = 42.9% Group RS 33.1% p= 0.04). Of all initial interventions, 182 endovascular re-interventions in 165 patients for recurrent femoropopliteal disease were identified (Group SS=70, Group RS=95). No differences were noted among the groups in terms of gender, comorbidities, initial TASC II classification, run off, calcification scores, or statin/clopidrogel use. Time to recurrence was not different between the RS and SS groups. TASC II classification, run off score, and degree of calcification were not different between the two groups (Table 1). Although not statistically significant, analysis of recurrence pattern demonstrated denovo stenosis was more common in the SS group (50.0% vs. 34.7% p=0.06).
Conclusion
In this single-center retrospective study, a significant difference in the incidence of recurrence requiring re-intervention between patients treated with selective stenting and routine stenting for femoropopliteal disease is found. Analysis of endovascular re-interventions, however, reveals no significant different in recurrence time or recurrence pattern between the two groups. No significant differences in time to recurrence, TASC II classification, runoff, and calcification of endovascular re-interventions between the two groups’ end points are identified. Additional prospective studies to evaluate the roles of routine and selective stenting in symptomatic femoropopliteal PAD and to investigate recurrence lesion characteristics and the patency of multiple endovascular interventions between these two groups are needed.