The effect of domestically-manufactured excimer laser with adjunctive balloon angioplasty in achieving revascularization and reduction of residual stenosis was assessed. 20 femoral arteries with thrombosis and occlusi...The effect of domestically-manufactured excimer laser with adjunctive balloon angioplasty in achieving revascularization and reduction of residual stenosis was assessed. 20 femoral arteries with thrombosis and occlusion from 12 dogs were subject to angiography. At first excimer laser angioplasty was done followed by balloon angioplasty. The diameter and residual stenosis of revascularized vessel were measured. The result showed that 17 out of 20 vessels (85 %) were revascularized. The diameter of revascularized vessel by excimer laser were 1. 22±0.14 mm,while residual stenoses were 54 %±5%. After adjunctive balloon angioplasty the diameter and residual stenoses were 2. 04±0. 16 mm and 20 %±7 %respectively (P<0. 05 and P<0. 01), Complication in form of vasoperforation occurred in 3/20 vessels (15%). It is concluded that China-manufactured excimerlaser angioplasty is effective when used for revascularization. While the reduction of narrowing and residual stenoses was enhanced after adjunction of balloon angioplasty. This method can be employed in treating peripheral occlusive disease effectively and safely.展开更多
In percutaneous coronary intervention (PCI), chronic total occlusion (CTO) coronary artery disease still remains difficult to treat. One of the reasons for the failure is the hard of the CTO lesions that balloon is di...In percutaneous coronary intervention (PCI), chronic total occlusion (CTO) coronary artery disease still remains difficult to treat. One of the reasons for the failure is the hard of the CTO lesions that balloon is difficult to pass through or expand. Previous methods to deal with CTO lesions that cannot be passed by balloon, include selecting reinforced catheter (such as 5 in 6 guiding catheter, Guidzilla catheter, or Tornus microcatheter), guidewire extrusion or rotary grinding technology. In recent years, excimer laser coronary angioplasty (ELCA) has been gradually applied to CTO lesions. Using inert halide as the laser medium, ELCA emits a 308 nm high-intensity unidirectional light wave with absorption depth of only 50 μmL, resulting in less thermal effect and less damage to non-target lesions. In this paper, we will describe a successful PCI case of an in-stent CTO lesion using ELCA with long term coronary angiography follow-up.展开更多
We reported 11 cases of excimer laser coronary angioplasty (ELCA). All were males, the average age being 59.7 years. Five patients had sustained previous myocardial infarctions with post-infarction angina in 2 cases a...We reported 11 cases of excimer laser coronary angioplasty (ELCA). All were males, the average age being 59.7 years. Five patients had sustained previous myocardial infarctions with post-infarction angina in 2 cases and 6 presented angina only. Coronary angiograms showed stenosis in LAD (N9), LCX(N6) and RCA (N6). According to the ACC/AHA classification, 6 were categorized as type B, and 5 type C. ELCA with adjunctive PTCA were performed in all 8 patients, 1. 3 mm (energy density 14. 5 mJ) and 1.6 mm (energy density 21.0 mJ) laser catheters with 20Hz pulse frequency were used There was one failure and in another ELCA was successful but death followed the procedure. The overall result was laser success 10 out of the 11 cases and procedure success 9.展开更多
目的观察准分子激光冠状动脉成形术(excimer laser atherectomy,ELCA)在慢性完全闭塞(chronic total occlusion,CTO)高阻力病变中的应用的安全性和有效性。方法总结自2020年5月至2021年8月在云南省阜外心血管病医院冠心病中心应用CTO导...目的观察准分子激光冠状动脉成形术(excimer laser atherectomy,ELCA)在慢性完全闭塞(chronic total occlusion,CTO)高阻力病变中的应用的安全性和有效性。方法总结自2020年5月至2021年8月在云南省阜外心血管病医院冠心病中心应用CTO导丝通过后球囊无法通过的病例共计51例,其中22例应用ELCA,29例采用其他临床常规方法,病例成功后均行血管内超声检查评估CTO段斑块性质并优化PCI治疗结果。手术成功定义为ELCA治疗后球囊及后续支架可通过病变,且支架植入后残余狭窄<20%。结果手术总成功率为90.2%(46/51),ELCA组成功率为100%(22/22),非ELCA治疗组成功率为82.7%(24/29),2组患者均未发生血管穿孔、心包填塞并发症。结论应用ELCA辅助CTO高阻力病变PCI治疗是安全有效的,可显著提高手术成功率。展开更多
文摘The effect of domestically-manufactured excimer laser with adjunctive balloon angioplasty in achieving revascularization and reduction of residual stenosis was assessed. 20 femoral arteries with thrombosis and occlusion from 12 dogs were subject to angiography. At first excimer laser angioplasty was done followed by balloon angioplasty. The diameter and residual stenosis of revascularized vessel were measured. The result showed that 17 out of 20 vessels (85 %) were revascularized. The diameter of revascularized vessel by excimer laser were 1. 22±0.14 mm,while residual stenoses were 54 %±5%. After adjunctive balloon angioplasty the diameter and residual stenoses were 2. 04±0. 16 mm and 20 %±7 %respectively (P<0. 05 and P<0. 01), Complication in form of vasoperforation occurred in 3/20 vessels (15%). It is concluded that China-manufactured excimerlaser angioplasty is effective when used for revascularization. While the reduction of narrowing and residual stenoses was enhanced after adjunction of balloon angioplasty. This method can be employed in treating peripheral occlusive disease effectively and safely.
文摘In percutaneous coronary intervention (PCI), chronic total occlusion (CTO) coronary artery disease still remains difficult to treat. One of the reasons for the failure is the hard of the CTO lesions that balloon is difficult to pass through or expand. Previous methods to deal with CTO lesions that cannot be passed by balloon, include selecting reinforced catheter (such as 5 in 6 guiding catheter, Guidzilla catheter, or Tornus microcatheter), guidewire extrusion or rotary grinding technology. In recent years, excimer laser coronary angioplasty (ELCA) has been gradually applied to CTO lesions. Using inert halide as the laser medium, ELCA emits a 308 nm high-intensity unidirectional light wave with absorption depth of only 50 μmL, resulting in less thermal effect and less damage to non-target lesions. In this paper, we will describe a successful PCI case of an in-stent CTO lesion using ELCA with long term coronary angiography follow-up.
文摘We reported 11 cases of excimer laser coronary angioplasty (ELCA). All were males, the average age being 59.7 years. Five patients had sustained previous myocardial infarctions with post-infarction angina in 2 cases and 6 presented angina only. Coronary angiograms showed stenosis in LAD (N9), LCX(N6) and RCA (N6). According to the ACC/AHA classification, 6 were categorized as type B, and 5 type C. ELCA with adjunctive PTCA were performed in all 8 patients, 1. 3 mm (energy density 14. 5 mJ) and 1.6 mm (energy density 21.0 mJ) laser catheters with 20Hz pulse frequency were used There was one failure and in another ELCA was successful but death followed the procedure. The overall result was laser success 10 out of the 11 cases and procedure success 9.
文摘目的观察准分子激光冠状动脉成形术(excimer laser atherectomy,ELCA)在慢性完全闭塞(chronic total occlusion,CTO)高阻力病变中的应用的安全性和有效性。方法总结自2020年5月至2021年8月在云南省阜外心血管病医院冠心病中心应用CTO导丝通过后球囊无法通过的病例共计51例,其中22例应用ELCA,29例采用其他临床常规方法,病例成功后均行血管内超声检查评估CTO段斑块性质并优化PCI治疗结果。手术成功定义为ELCA治疗后球囊及后续支架可通过病变,且支架植入后残余狭窄<20%。结果手术总成功率为90.2%(46/51),ELCA组成功率为100%(22/22),非ELCA治疗组成功率为82.7%(24/29),2组患者均未发生血管穿孔、心包填塞并发症。结论应用ELCA辅助CTO高阻力病变PCI治疗是安全有效的,可显著提高手术成功率。
