Document Detail

Plaque excision with the Silverhawk catheter: early results in patients with claudication or critical limb ischemia.
MedLine Citation:
PMID:  17210379     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: This study was conducted to detail the early experience after infrainguinal atherectomy using the Silverhawk plaque excision catheter for the treatment of symptomatic peripheral vascular disease.
METHODS: A prospective database was established in August 2004 in which data for operations, outcomes, and follow-up were recorded for patients undergoing percutaneous plaque excision for peripheral arterial occlusive disease. Society for Vascular Surgery (SVS) ischemia scores and femoropopliteal TransAtlantic Inter-Society Consensus (TASC) criteria were assigned. A follow-up protocol included duplex ultrasound surveillance at 1, 3, and 6 months and then yearly thereafter. Standard statistical analyses were performed.
RESULTS: During a 17-month period, 66 limbs of 60 patients (37 men [61.7%]) underwent 70 plaque excisions (four repeat procedures). Indications included tissue loss based on SVS ischemia at grades 5 and 6 (25/70), rest pain at grade 4 (22/70), and claudication at grades 2 to 3 (23/70). The mean lesion length was 8.8 +/- 0.7 cm. The technical success rate was 87.1% (61/70). Adjunctive treatment was required in 17 procedures (24.3%), consisting of 14 balloon angioplasties and three stents. Femoropopliteal TASC criteria included 5 TASC A lesions, 14 TASC B lesions, 32 TASC C lesions, and 19 TASC D lesions. Although 17 plaque excisions included a tibial vessel, no patient underwent isolated tibial atherectomy. The mean increase in ankle-brachial index was 0.27 +/- 0.04 and in toe pressure, 20.3 +/- 6.9 mm Hg. Mean duplex ultrasound follow-up was 5.2 months (range, 1 to 17 months). One-year primary, primary assisted, and secondary patency was 61.7%, 64.1%, and 76.4%, respectively. Restenosis or occlusion developed in 12 patients (16.7%) and was detected at a mean of 2.8 +/- 0.7 months. Restenosis or occlusion was significantly more common (P < .05) in patients with TASC C and D lesions compared with patients with TASC A and B lesions. Six (8.3%) of 12 patients underwent reintervention on the basis of duplex ultrasound surveillance results. Four (33.3%) of 12 patients experienced reocclusion during the same hospitalization, and amputation and open revascularization were required in two patients each.
CONCLUSIONS: Percutaneous plaque excision is a viable treatment option for lower extremity revascularization. Outcomes are related to ischemia and lesion severity. Patency and limb salvage rates are equivalent to other endovascular modalities.
W Brent Keeling; Murray L Shames; Patrick A Stone; Paul A Armstrong; Brad L Johnson; Martin R Back; Dennis F Bandyk
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of vascular surgery     Volume:  45     ISSN:  0741-5214     ISO Abbreviation:  J. Vasc. Surg.     Publication Date:  2007 Jan 
Date Detail:
Created Date:  2007-01-09     Completed Date:  2007-02-08     Revised Date:  2012-10-03    
Medline Journal Info:
Nlm Unique ID:  8407742     Medline TA:  J Vasc Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  25-31     Citation Subset:  IM    
Division of Vascular and Endovascular Surgery, University of South Florida,Tampa, FL, USA.
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MeSH Terms
Catheterization, Peripheral / instrumentation*
Equipment Design
Femoral Artery / surgery*,  ultrasonography
Follow-Up Studies
Intermittent Claudication / surgery*,  ultrasonography
Ischemia / surgery*,  ultrasonography
Leg / blood supply*
Popliteal Artery / surgery*,  ultrasonography
Prospective Studies
Severity of Illness Index
Treatment Outcome
Ultrasonography, Doppler, Duplex
Vascular Surgical Procedures / methods*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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