Compression Stocking Compliance Does Not Impact Reintervention or Symptom Change after Iliac Vein Stenting in Patients with Moderate to Severe Lower Extremity Edema

Background: Medical compression stocking (MCS) therapy remains a core treatment for chronic venous disease, particularly in patients with lower extremity edema. This study investi-gated the impact of postoperative MCS adherence on patients with moderate to severe edema who underwent iliac vein stenting (IVS).Methods: Patients at a large tertiary care center who underwent IVS from August 2011 to June 2021 were analyzed. Symptoms were quantified using the venous clinical severity score (VCSS) and clinical assessment score (CAS). The criterion for inclusion was moderate or severe lower extremity edema at the time of IVS. Patients were stratified into two cohorts: complete postop-erative compression therapy compliance (MCS+) and no postoperative compression therapy use (MCS-).Results: Among 376 patients fitting our study criteria, we identified 168 MCS+ and 208 MCS-patients. The VCSS edema score did not significantly differ between groups (P = 0.179). Post-operatively, the mean changes in VCSS edema at the first postoperative visit, the one-year follow-up, and the two-year follow-up were not significantly different between the MCS+ and MCS-cohorts (P = 0.123, 0.296, and 0.534, respectively). An analysis of CAS for edema revealed that the MCS+ cohort had a modestly better improvement in edema at the 90-day follow-up visit versus the MCS-cohort (P = 0.018), but this difference was not observed in the 30-day (P = 0.834) or six-month follow-up visit (P = 0.755). A multivariate analysis revealed no difference in the need for major intervention (OR 0.93, 95% CI 0.44 to 1.50, P = 0.504). A KaplaneMeier analysis via log-rank test revealed no difference in reintervention-free survival be-tween groups (P = 0.77).Conclusions: Many patients with moderate to severe lower extremity edema experience a reduction in their edema after IVS. In our study, compression stocking compliance after surgery had a little impact on edema relief in this population.