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through-the-balloon ultrasound ablation
相关语句
  经球囊超声导管消融
     The Effect of Electrical Isolation on Pulmonary Veins With Through-the-Balloon Ultrasound Ablation:One Dog Experimental Study Report.
     经球囊超声导管消融对肺静脉的电隔离作用——附一只犬的动物实验报告
短句来源
  “through-the-balloon ultrasound ablation”译为未确定词的双语例句
     Preliminary Results of Pulmonary Veins Isolation Using Through-the-Balloon Ultrasound Ablation System in Patients With Paroxysmal Atrial Fibrillation.
     经球囊超声消融肺静脉治疗阵发性心房颤动的初步结果
短句来源
     The clinical study of the pulmonary vein isolation with through-the-balloon ultrasound ablation for focal atrial fibrillation
     导管超声消融治疗局灶性心房颤动的临床应用研究
短句来源
     The influence of radiofrequency catheter ablation and through-the-balloon ultrasound ablation on coagulable states of blood
     超声消融与射频消融对血凝状态影响的实验研究
短句来源
     Conclusion: With the through-the-balloon ultrasound ablation system,electrical isolation of multiple PVs seems convenient,but its effectiveness still need to be evaluated.
     结论 :采用经球囊超声系统进行多肺静脉的电学隔离方法简便 ,但效果仍有待进一步评价
短句来源
     Methods Six mongrel dogs were equally divided into two groups, with RF catheter ablation (RFCA) and through-the-balloon ultrasound ablation (TTB-USA) performed within the IVCs, respectively. Animals were euthanized at 30 minutes,4,12 weeks after repeat IVC angiography.
     方法 对两组共6条杂种犬行下腔静脉造影后分别用射频及超声能量消融下腔静脉开口处,术后30min、4周、12周分别取两组试验犬各1条,重复下腔静脉造影后处死,取被消融处组织制成切片,光镜下观察。
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     Through deriving J.
     通过对J.
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     Through the study of C.
     通过对C.
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     Watering Through
     饮水机
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     Reality through the Dust
     穿透尘埃的真实——读阿来的《尘埃落定》
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     Through-Tubing X-YCallper
     过油管X—Y井径仪
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To study whether ablation with Through-the-Balloon Ultrasound Ablation (TTB-USA) can electrically isolate left superior pulmonary vein (LSPV) and cause acute or chronic LSPV stenosis after ablation,the LSPV of one dog was electrically isolated with TTB-USA.Through the atrial septum,the TTB-USA was positioned at junction of LSPV and left atrium,and then begin to ablate to electrical isolation.Before,after ablation LSPV angiography was performed,and 2 months later pathological examination...

To study whether ablation with Through-the-Balloon Ultrasound Ablation (TTB-USA) can electrically isolate left superior pulmonary vein (LSPV) and cause acute or chronic LSPV stenosis after ablation,the LSPV of one dog was electrically isolated with TTB-USA.Through the atrial septum,the TTB-USA was positioned at junction of LSPV and left atrium,and then begin to ablate to electrical isolation.Before,after ablation LSPV angiography was performed,and 2 months later pathological examination was made. Result: The total ablation time was 1160 seconds. The effective ablation was indicated by the gradual decrease of amplitude of A wave in pulmonary vein,the extension of SP interval and eventually the electrical isolation.No acute pulmonary vein stenosis was found before or after 15 min ablation.No hemodynamic change appeared after ablation. Tow months later, pathological examination of pulmonary vein showed the wall of LSPV became mild thicker circularly and no any stenosis in LSPV was found. Conclution: The TTB-USA can electrically isolate LSPV of dog and do not cause acute or chronic stenosis after ablation.

试研究球囊超声导管消融能否电隔离肺静脉、是否造成肺静脉的急性或者慢性狭窄。报告 1只犬的左上肺静脉经球囊超声导管消融电隔离结果。经房间隔将球囊超声导管的球囊置于左上肺静脉与左房的交界处 ,消融至电隔离。消融前后行肺静脉造影检查 ,2个月后行病理检查。结果 :消融开始至隔离的时间为 1160s。有效消融表现为肺静脉内的A波振幅逐渐降低 ,SP间期的逐渐延长至出现肺静脉与心房的电隔离。消融前与消融后 15min的造影对比 ,无肺静脉的狭窄及血液动力学变化。 2个月后尸体解剖发现肺静脉壁的轻度环行增厚 ,无左上肺静脉的狭窄。结论 :球囊超声消融可完全电隔离肺静脉 ,不造成肺静脉的急性或慢性狭窄 ,但长期效果仍有待观察。

Preliminary results of pulmonary veins (PVs) isolation using through the balloon ultrasound ablation system in 4 patients with paroxysmal atrial fibrillation(AF) refractory to medication were reported.In each patient,circumferential ablation of both upper PVs and left inferior PV was performed with the endpoint of PV potential elimination.In total,11 PVs were ablated and endpoint was achieved in 9 of them.An average of 3.3 (1~6) ultrasound energy applications were required to isolate 1 PV.The postablation...

Preliminary results of pulmonary veins (PVs) isolation using through the balloon ultrasound ablation system in 4 patients with paroxysmal atrial fibrillation(AF) refractory to medication were reported.In each patient,circumferential ablation of both upper PVs and left inferior PV was performed with the endpoint of PV potential elimination.In total,11 PVs were ablated and endpoint was achieved in 9 of them.An average of 3.3 (1~6) ultrasound energy applications were required to isolate 1 PV.The postablation venography revealed no acute PV stenosis.The mean fluoroscopic time and procedure time were 32(19~40) minites and 2.4(1.9~3.0) hours,respectively.After a mean follow-up of 22 (19~25) days,only 1 patients (25%) was free of symptomatic AF attacks.Conclusion: With the through-the-balloon ultrasound ablation system,electrical isolation of multiple PVs seems convenient,but its effectiveness still need to be evaluated.

报道采用经球囊超声消融系统进行肺静脉电学隔离治疗 4例阵发性心房颤动 (简称房颤 )的初步结果。消融部位为双上肺静脉和左下肺静脉。总计对 11根肺静脉进行了超声消融 ,其中 9根达到消融终点———肺静脉电位消失。电学隔离一根肺静脉需平均进行 3.3(1~ 6 )次超声消融。消融后的肺静脉造影未见急性肺静脉狭窄。X线透视时间平均 32 (19~ 40 )min ,操作时间平均 2 .4(1.9~ 3.0 )h。术后平均随访 2 2 (19~ 2 5 )天 ,仅 1例 (2 5 % )患者房颤未再发作。结论 :采用经球囊超声系统进行多肺静脉的电学隔离方法简便 ,但效果仍有待进一步评价

Objective To observe and compare the short-and long-term pathological effects of radiofre-quency(RF) and ultrasound energy application in the orifice of inferior vena cava(IVC) in dogs. Methods Six mongrel dogs were equally divided into two groups, with RF catheter ablation (RFCA) and through-the-balloon ultrasound ablation (TTB-USA) performed within the IVCs, respectively. Animals were euthanized at 30 minutes,4,12 weeks after repeat IVC angiography. Sections were cut and examined under the light microscope....

Objective To observe and compare the short-and long-term pathological effects of radiofre-quency(RF) and ultrasound energy application in the orifice of inferior vena cava(IVC) in dogs. Methods Six mongrel dogs were equally divided into two groups, with RF catheter ablation (RFCA) and through-the-balloon ultrasound ablation (TTB-USA) performed within the IVCs, respectively. Animals were euthanized at 30 minutes,4,12 weeks after repeat IVC angiography. Sections were cut and examined under the light microscope. Results All the 3 RF ablated IVC developed significant venous stenosis scon after the ablation while none was found among the TTB-USA group. Venous stenosis were found with both group at 12 weeks. On gross examination, RFCA produced tissue necrosis and white, firm, irregularly contracted scars while lesions caused by TTB-USA were smooth, even and continuously circumferential. Histological examination revealed that intimal injury and proliferation, necrotic myocardium in various stages of collagen replacement, vascular contraction were found in both groups and were more serious in RFCA group. Conclusions Both RF and ultrasound energy could produce transmural lesions in the IVC. The ablated veins shared similar pathological procedure. Ultrasound energy injured venous slightly and the lesions tended to be continuously circumferential and smooth,so it is of less possibility to lead to venous stenosis compared with RFCA and might be relatively ideal energy for catheter ablation.

目的 观察并对比射频导管消融与经球囊超声导管消融犬下腔静脉开口处后静脉壁的近期及远期病理改变,探讨消融术后静脉狭窄的病理机制。方法 对两组共6条杂种犬行下腔静脉造影后分别用射频及超声能量消融下腔静脉开口处,术后30min、4周、12周分别取两组试验犬各1条,重复下腔静脉造影后处死,取被消融处组织制成切片,光镜下观察。结果 下腔静脉造影示射频导管消融组术后30 min,3条犬均有下腔静脉不同程度的狭窄,而超声消融组则没有。术后 12周时处死的两条犬均有管腔狭窄。慢性期大体标本显示射频导管消融术后可使静脉管壁形成局限的、僵硬的、形状不规则的疤痕,管壁挛缩。而超声组在静脉内壁仅形成光滑的、均匀的、连续的环状损伤。组织学观察均显示有不同程度的内膜损伤及增生、全层肌组织破坏并逐渐被纤维组织取代,管壁挛缩,但射频导管消融组改变更明显。结论 射频导管消融与经球囊超声导管消融均可造成血管透壁损伤,术后病理演变过程相似。超声在血管内壁造成的损伤轻微、均匀,呈连续环状,慢性期修复反应较轻,虽有形成管腔狭窄的可能,但较射频导管消融组轻微,且操作简便,效果确切,是较为理想的消融方法。

 
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