Angioscopy and Laser Angioplasty using Ceramic Tip of obstructive Arterio-venous Fistula

Abstract

This study was performed to check the possibility of angioscopy and laser angioplasty of obstructive arterio-venous fistula. Dogs with the femoral arterio-venous fistula produce experimentally were divided into two groups. For producing thrombus, Group C dogs were inserted copper coil into the femoral vein. Group S dogs had the stenosis ligated in the femoral artery. Angioscopy and laser angioplasty was conducted for coil thrombus detected by angiography of the fistula. After performing angioplasty, angioscopy and angiography was conducted again. In Groups angioscopy was performed for 5 hours every one hour. After confirming safety of angioscopy experimentally, angioscopy was applied to the patients with obstructive arterio-venous fistula.
Red thrombus in Group C, white fibrin net in Group S, and thickening of the intima of the patients was safely observed using angioscopy. Experimental laser angioplasty was safely performed and recanalization was confirmed by angioscopy and angiography.