新型双极射频消融的体外实验观察

目的: 初步研究新型双极射频消融在离体猪里脊肉上的消融灶的形态及范围。方法: 在不同的条件下,在新鲜的离体猪里脊肉上进行新型双极射频消融, 观察消融灶的大小形态及范围。结果: 在相匹配的条件下,新型双极射频可以形成适形的消融灶。

Chronic radiation proctopathy: A practical review of endoscopic treatment

Chronic radiation proctopathy(CRP) is a troublesome complication of pelvic radiotherapy. The most common presentation is rectal bleeding. CRP symptoms interfere with daily activities and decrease quality of life. Rectal bleeding management in patients with CRP represents a conundrum for practitioners. Medical therapy is ineffective in general and surgical approach has a high morbidmortality. Endoscopy has a role in the diagnosis,staging and treatment of this disease. Currently available endoscopic modalities are formalin,potassium titanyl phosphate laser,neodymium:yttrium-aluminum-garnet laser,argon laser,bipolar electrocoagulation(BiCAP),heater probe,band ligation,cryotherapy,radiofrequency ablation and argon plasma coagulation(APC). Among these options,APC is the most promising.

49例双极射频消融改良迷宫手术治疗心脏病合并心房纤颤

目的 探讨心脏手术同期进行双极射频改良迷宫手术（Cox maze Ⅲ）治疗心房颤动（AF）的手术效果,研究术后窦性心律维持率及其与左心房大小的关系.方法 2008年4月至2010年6月心脏病合并AF的患者接受心脏手术,同期行房颤改良双极射频消融手术,比较手术前后心电图前后心电图、超声心动图各项指标及心功能变化.结果 全组无手术死亡,术后低心排除量综合征1例,频发室性早搏并短阵室性心动过速2例.全部患者顺利出院.术后失访1例,1例于术后6个月死于栓塞.47例随访存活者,随访3～29个月,3个月、6个月和1年以上稳定窦性心律分别为36/48（75.0%）、36/40（90.0%）和20/22（90.9%）,心功能（NYHA）Ⅰ级41例、Ⅱ级6例,超声显示左房明显缩小.结论 心脏手术中行Cox maze Ⅲ治疗AF安全有效,临床效果良好.随着术后时间延长,稳定窦性心律逐步增加,左房≤60 mm者窦性心律维持率高于≥60 mm者.