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THE JOURNAL OF CARDIOVASCULAR SURGERY
Rivista di Chirurgia Cardiaca, Vascolare e Toracica
Indexed/Abstracted in: BIOSIS Previews, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
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ORIGINAL ARTICLES VASCULAR SECTION
The Journal of Cardiovascular Surgery 2014 Agosto;55(4):551-8
Offroad re-entry catheter system for subintimal recanalization of chronic total occlusions in femoropopliteal arteries: primary safety and effectiveness results of the re-route trial
Schmidt A. 1, Keirse K. 2, Blessing E. 3, Langhoff R. 4, Diaz-Cartelle J. 5 ✉
1 Park-Hospital Leipzig, Center for Vascular Medicine, Leipzig, Germany;
2 Regional Hospital Heilig Hart Tienen, Tienen, Belgium;
3 University of Heidelberg, Heidelberg, Germany;
4 Sankt Gertrauden-Krankenhaus, Center for Vascular Medicine, Berlin, Germany;
5 Boston Scientific Corporation, Marlborough, MA, USA
AIM: Aim of the study was to provide additional clinical data regarding the safety and technical success of the OffRoad Re-Entry Catheter System (Boston Scientific, Natick, MA, USA) for subintimal recanalization of chronic total occlusions (CTO) in the femoropopliteal arteries.
METHODS: A total of 92 patients (mean age 70.3±10.6 years; 70% male) were enrolled in this prospective, single-arm, post-market study conducted at 12 European centers. Patients were required to have claudication or critical limb ischemia and a CTO lesion in a native femoropopliteal artery. The primary safety endpoint was the composite rate of device-related major adverse events (MAEs; i.e., death, perforation requiring intervention, clinically significant peripheral embolism, and major amputation of the treated lower limb) at 30 days. Effectiveness was based on device technical success, defined as placement of a guidewire in the true lumen distal to a CTO.
RESULTS: Ninety patients were evaluable for the primary safety endpoint. The 30-day device-related MAE rate was 3.3% (3/90), with an upper confidence bound of 6.5%, which was lower than the prespecified performance goal of 15%. All 3 events were clinically significant peripheral emboli. Technical success was 84.8% (78/92) with a lower confidence bound of 78.6%, which exceeded the prespecified performance goal of 76%. A decrease of ≥1 Rutherford category was observed in 75% (65/87) of patients at the 30 day visit.
CONCLUSION: The Re-ROUTE trial results demonstrate acceptable performance of the OffRoad system in terms of safety and technical success for the recanalization of femoropopliteal CTOs.