title: Postoperative hemodynamic changes after endovenous laser ablation and phlebectomy in varicose vein surgery.
abstract: OBJECTIVE
  This study was designed to examine postoperative venous hemodynamic changes at 1 and 6 months after endovenous laser ablation (EVLA) and phlebectomy for primary great saphenous varicose veins.
  
  
  METHODS
  We retrospectively analyzed 116 limbs from 102 patients who were treated with EVLA from 2011 to 2013 at Samsung Medical Center. Venous hemodynamic changes were evaluated by air plethysmography preoperatively and at 1 month and 6 months postoperatively. The measured hemodynamic changes included venous volume (VV), venous filling index (VFI), residual volume fraction (RVF), and ejection fraction (EF).
  
  
  RESULTS
  The study included 52 limbs from men (44.8%) and 64 limbs from women (55.2%; male/female ratio, 1:1.23). The mean age of the patients was 54.8 ± 12.3 years. The preoperative median values were VV of 99.1 mL, VFI of 3.6 mL/s, RVF of 39.2%, and EF of 55.5%. The 1-month and 6-month postoperative median values were VV of 77.6 and 75.5 mL, VFI of 1.4 and 1.5 mL/s, RVF of 32.5% and 26.4%, and EF of 60.5% and 66.2%, respectively. The postoperative reduction rates between preoperative and 1-month measurements for VV, VFI, and RVF were 18.6%, 63.9%, and 22.2%, and the increase in EF was 7.9%. (P < .001, P < .001, P < .001, P = .043). Comparing 1-month and 6-month measurements, the reduction rates of VV and RVF were 1.9% and 15%, and the increase rates of VFI and EF were 3.2% and 7.6%, respectively. EF was significantly increased at 6 months compared with 1 month after EVLA (P = .013), but the other parameters showed no statistically significant differences between 1 month and 6 months after EVLA.
  
  
  CONCLUSIONS
  This study demonstrated that the venous hemodynamic parameters of primary varicose veins improved after performance of EVLA and phlebectomy.
authors.affiliation: Division of Vascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Yoongseok
authors.initials: Y
authors.lastname: Park
authors.affiliation: Division of Vascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Young-Wook
authors.initials: YW
authors.lastname: Kim
authors.affiliation: Division of Vascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Yang-Jin
authors.initials: YJ
authors.lastname: Park
authors.affiliation: Division of Vascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea. Electronic address: dikim@skku.edu.
authors.forename: Dong-Ik
authors.initials: DI
authors.lastname: Kim
mesh_terms: D000328:Adult; D000368:Aged; D017115:Catheter Ablation; D005260:Female; D006439:Hemodynamics; D006801:Humans; D053685:Laser Therapy; D008297:Male; D008875:Middle Aged; D010991:Plethysmography; D012189:Retrospective Studies; D012501:Saphenous Vein / Q000601:surgery*; D016896:Treatment Outcome; D014648:Varicose Veins / Q000503:physiopathology / Q000601:surgery*