Recanalization of chronic total occlusion after conventional guidewire failure: guided by optical coherent reflectometry and facilitated by radiofrequency energy ablation.
The success rate of percutaneous recanalization of chronic total occlusion remains low. The Safe-Cross wire, which utilizes the principle of optical coherent reflectometry for guidance and has the ability to deliver radiofrequency energy for tissue ablation, was evaluated in 21 patients. This wire was used only after conventional guidewire failure, except in 4 patients who had failed an interventional procedure 3 months to 2 years previously. Conventional guidewires were successful in 9, and the Safe-Cross wire was successful in 10 of the remaining 12, including those 4 with a failed previous attempt. The total success rate was 90% (19/21 patients). Technological improvement in the steerability of the Safe-Cross wire may help to improve the success rate further.
Wong
Philip
P
Division of Cardiology, Department of Medicine and Therapeutics, Prince of Wales Hospital, Chinese University of Hong Kong, Hong Kong, People s Republic of China. philip.wong@qhms.com
Tse
Kin K
KK
Chan
Wilson
W
D000328:Adult; D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000295:instrumentation*; D017115:Catheter Ablation / Q000295:instrumentation; D002681:China; D002908:Chronic Disease; D017023:Coronary Angiography; D003327:Coronary Disease / Q000000981:diagnostic imaging / Q000628:therapy*; D004868:Equipment Failure; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D017211:Treatment Failure