Saphenous venous ablation with hot contrast in a canine model

Amit Prasad, Zhong Qian, David Kirsch, Marna Eissa, Pavan Narra, Jorge Lopera, Carmen G. Espinoza, Wifrido Castaneda

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: To determine the feasibility, efficacy, and safety of thermal ablation of the saphenous vein with hot contrast medium. Methods: Twelve saphenous veins of 6 dogs were percutaneously ablated with hot contrast medium. In all animals, ablation was performed in the vein of one leg, followed by ablation in the contralateral side 1 month later. An occlusion balloon catheter was placed in the infragenicular segment of the saphenous vein via a jugular access to prevent unwanted thermal effects on the non-target segment of the saphenous vein. After inflation of the balloon, 10 ml of hot contrast medium was injected under fluoroscopic control through a sheath placed in the saphenous vein above the ankle. A second 10 ml injection of hot contrast medium was made after 5 min in each vessel. Venographic follow-up of the ablated veins was performed at 1 month (n = 12) and 2 months (n = 6). Results: Follow-up venograms showed that all ablated venous segments were occluded at 1 month. In 6 veins which were followed up to 2 months, 4 (66%) remained occluded, 1 (16%) was partially patent, and the remaining vein (16%) was completely patent. In these latter 2 cases, an inadequate amount of hot contrast was delivered to the lumen due to a closed balloon catheter downstream which did not allow contrast to displace blood within the vessel. Discussion: Hot contrast medium thermal ablation of the saphenous vein appears feasible, safe, and effective in the canine model, provided an adequate amount of embolization agent is used.

Original languageEnglish (US)
Pages (from-to)158-163
Number of pages6
JournalCardiovascular and Interventional Radiology
Volume31
Issue number1
DOIs
StatePublished - Jan 2008

Keywords

  • Ablation
  • Animal model
  • Contrast
  • Experimental
  • Interventional procedure
  • Saphenous vein

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

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