OBJECTIVE: To determine the mid-term effects of cutting balloon angioplasty (CBA) on in-stent restenosis. METHODS: A total of 69 patients with in-stent restenosis were divided into 2 groups randomly: cutting balloon a...OBJECTIVE: To determine the mid-term effects of cutting balloon angioplasty (CBA) on in-stent restenosis. METHODS: A total of 69 patients with in-stent restenosis were divided into 2 groups randomly: cutting balloon angioplasty and plain old balloon angioplasty. The mechanisms of restenosis and dilation results were determined by quantitative coronary angiography and intravascular ultrasound. Follow-up was performed. RESULTS: The procedural success rate was 100% without death and acute closure. One patient experienced dissection at the distal end of the stent and needed another stent. The mean follow-up period was 6.7 +/- 2.3 months. The final re-restenosis rate was 15% and 18% at 3 months and 6 months respectively, markedly lower than after plain old balloon angioplasty (38% and 43%). Acute gain by intravascular ultrasound (IVUS) was 1.72 +/- 0.52 mm after cutting balloon angioplasty, higher than 1.15 +/- 0.54 mm after plain old balloon angioplasty. The lumen diameter late loss in the cutting balloon group was 0.26 +/- 0.05 mm and 0.38 +/- 0.06 mm at 3 months and 6 months respectively, significantly lower than for those in conventional balloon group (0.78 +/- 0.19 mm and 0.89 +/- 0.16 mm, respectively, P展开更多
Objective To assess the efficacy and safety of percutaneous transluminal stenting for patients with carotid artery stenosis.Methods Selective percutaneous transluminal stenting was performed for patients with symptoma...Objective To assess the efficacy and safety of percutaneous transluminal stenting for patients with carotid artery stenosis.Methods Selective percutaneous transluminal stenting was performed for patients with symptomatic carotid artery stenosis(luminal narrowing ≥ 70%).Success rates and complications associated with the procedures were observed.During six months of follow-up,both recurrent symptom and restenosis rates were recorded.Results There were 17 bifurcating lesions among 27 stenoses in 26 patients,of whom 18 had concomitant coronary artery diseases.The acute procedural success rate was 96.3%(26/27),and the degree of stenosis was reduced from 88.6% ± 8.9%(range 70 - 100)to 0.4% ± 2.0%(range 0 - 10).Six patients developed severe bradycardia and hypotension,and 3 experienced transient loss of consciousness during balloon dilatation.During hospitalization,2 patients experienced loss of consciousness and convulsion,respectively,due to hyperperfusion,and both recovered 12 hours later.There were 2 minor stroke cases (7.4%)but no cases of major stroke or death.At the 6-month follow-up,there were no cases of TIA or new onset of stroke.There was no restenosis detected in 16 cases using angiography and in 10 cases using MRI in 6 to 16 months of follow-up.Conclusions Percutaneous transluminal stenting for patients with carotid artery stenosis has a high procedural success rate with few and acceptable complications.Few patients suffered from recurrent symptoms or showed restenosis in long-term follow-up.展开更多
文摘OBJECTIVE: To determine the mid-term effects of cutting balloon angioplasty (CBA) on in-stent restenosis. METHODS: A total of 69 patients with in-stent restenosis were divided into 2 groups randomly: cutting balloon angioplasty and plain old balloon angioplasty. The mechanisms of restenosis and dilation results were determined by quantitative coronary angiography and intravascular ultrasound. Follow-up was performed. RESULTS: The procedural success rate was 100% without death and acute closure. One patient experienced dissection at the distal end of the stent and needed another stent. The mean follow-up period was 6.7 +/- 2.3 months. The final re-restenosis rate was 15% and 18% at 3 months and 6 months respectively, markedly lower than after plain old balloon angioplasty (38% and 43%). Acute gain by intravascular ultrasound (IVUS) was 1.72 +/- 0.52 mm after cutting balloon angioplasty, higher than 1.15 +/- 0.54 mm after plain old balloon angioplasty. The lumen diameter late loss in the cutting balloon group was 0.26 +/- 0.05 mm and 0.38 +/- 0.06 mm at 3 months and 6 months respectively, significantly lower than for those in conventional balloon group (0.78 +/- 0.19 mm and 0.89 +/- 0.16 mm, respectively, P
文摘Objective To assess the efficacy and safety of percutaneous transluminal stenting for patients with carotid artery stenosis.Methods Selective percutaneous transluminal stenting was performed for patients with symptomatic carotid artery stenosis(luminal narrowing ≥ 70%).Success rates and complications associated with the procedures were observed.During six months of follow-up,both recurrent symptom and restenosis rates were recorded.Results There were 17 bifurcating lesions among 27 stenoses in 26 patients,of whom 18 had concomitant coronary artery diseases.The acute procedural success rate was 96.3%(26/27),and the degree of stenosis was reduced from 88.6% ± 8.9%(range 70 - 100)to 0.4% ± 2.0%(range 0 - 10).Six patients developed severe bradycardia and hypotension,and 3 experienced transient loss of consciousness during balloon dilatation.During hospitalization,2 patients experienced loss of consciousness and convulsion,respectively,due to hyperperfusion,and both recovered 12 hours later.There were 2 minor stroke cases (7.4%)but no cases of major stroke or death.At the 6-month follow-up,there were no cases of TIA or new onset of stroke.There was no restenosis detected in 16 cases using angiography and in 10 cases using MRI in 6 to 16 months of follow-up.Conclusions Percutaneous transluminal stenting for patients with carotid artery stenosis has a high procedural success rate with few and acceptable complications.Few patients suffered from recurrent symptoms or showed restenosis in long-term follow-up.
