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Clinical outcomes and influencing factors of in-stent restenosis after stenting for symptomatic stenosis of the vertebral V1 segment.
Journal of Vascular Surgery 2018 November
OBJECTIVE: The objective of this study was to evaluate 30-day and long-term clinical outcomes and influencing factors of in-stent restenosis (ISR) after stenting for symptomatic stenosis of the vertebral V1 segment.
METHODS: The clinical and follow-up data of 301 consecutive patients (mean age, 64 ± 8 years; 252 men) with symptomatic V1 stenosis who underwent stenting at the Fuwai Hospital between January 2010 and June 2016 were collected retrospectively. The 30-day and long-term follow-up of stroke and death after stenting and the recurrence of symptoms, ISR, and repeated revascularization were assessed.
RESULTS: Technical success was 100%. The mean stenosis of lesions was reduced from 82.8% ± 7.6% to 4.4% ± 4.0% immediately after 312 stents (165 bare-metal stents [BMSs] and 147 drug-eluting stents) were implanted. The overall risk of combined any stroke and death was 1.0% (3/301) within 30 days after stenting. The rates of freedom from any stroke and death were 98.2%, 96.8%, and 91.4% at 1 year, 3 years, and 5 years, respectively. After a mean follow-up of 2.9 ± 1.5 years, 46 (15.8%) patients developed ISR, of whom 19 (6.5%) were symptomatic. Twenty-two (7.6%) patients with ISR underwent repeated revascularization. The primary and assisted patency rates were 90.0% and 95.4%, 82.6% and 90.3%, and 80.3% and 87.9% at 1 year, 3 years, and 5 years, respectively. BMS (hazard ratio, 2.02; 95% confidence interval, 1.01-4.06; P < .05) and diabetes (hazard ratio, 1.87; 95% confidence interval, 1.04-3.37; P = .04) were independently associated with an increased risk of ISR.
CONCLUSIONS: Percutaneous stent placement for symptomatic V1 stenosis is safe and associated with a good long-term patency rate. BMS and diabetes are independent predictive factors of ISR.
METHODS: The clinical and follow-up data of 301 consecutive patients (mean age, 64 ± 8 years; 252 men) with symptomatic V1 stenosis who underwent stenting at the Fuwai Hospital between January 2010 and June 2016 were collected retrospectively. The 30-day and long-term follow-up of stroke and death after stenting and the recurrence of symptoms, ISR, and repeated revascularization were assessed.
RESULTS: Technical success was 100%. The mean stenosis of lesions was reduced from 82.8% ± 7.6% to 4.4% ± 4.0% immediately after 312 stents (165 bare-metal stents [BMSs] and 147 drug-eluting stents) were implanted. The overall risk of combined any stroke and death was 1.0% (3/301) within 30 days after stenting. The rates of freedom from any stroke and death were 98.2%, 96.8%, and 91.4% at 1 year, 3 years, and 5 years, respectively. After a mean follow-up of 2.9 ± 1.5 years, 46 (15.8%) patients developed ISR, of whom 19 (6.5%) were symptomatic. Twenty-two (7.6%) patients with ISR underwent repeated revascularization. The primary and assisted patency rates were 90.0% and 95.4%, 82.6% and 90.3%, and 80.3% and 87.9% at 1 year, 3 years, and 5 years, respectively. BMS (hazard ratio, 2.02; 95% confidence interval, 1.01-4.06; P < .05) and diabetes (hazard ratio, 1.87; 95% confidence interval, 1.04-3.37; P = .04) were independently associated with an increased risk of ISR.
CONCLUSIONS: Percutaneous stent placement for symptomatic V1 stenosis is safe and associated with a good long-term patency rate. BMS and diabetes are independent predictive factors of ISR.
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