CT引导经皮肺穿刺锚状电极高温射频消融治疗肺部肿瘤105例

目的 观察ＣＴ引导经皮肺穿刺高温射频消融治疗１０５例肺部恶性肿瘤的近期效果。方法 ＣＴ引导经皮肺穿刺,可扩展锚状电极配合ＲＦ－２０００仪高温射频消融治疗原发性肺癌８１例,肺部转移瘤２４例,共计２４２个肿瘤,每个肿瘤治疗３～８次,持续时间３～３３７ｍｉｎ。结果 完全缓解（ＣＲ）率１１．１％,部分缓解（ＰＲ）率７１．１％,轻微疗效（ＭＲ）率１３．２％,无改变（ＮＣ）率４．５％,其中ＣＲ＋ＰＲ率为８２．     

单导管射频消融治疗频发房颤的预激综合征

采用单导管射频消融法治疗１２ 例预激综合征（ Ｗ Ｐ Ｗ） 。１２ 例中８ 例有反复快速性房颤史,３ 例须用同步直流电复律,１ 例伴有晕厥。旁路分别为左侧８ 条,右后间隔２ 条,右后侧及右前间隔各１ 条,右侧者有１ 例并存１ 条左侧隐匿旁路。全部旁路一次消融成功。术中未诱发房颤。随访５ ～１７ 月未见复发。     

Histological findings after angioplasty using conventional balloon, radiofrequency thermal balloon, and stent for experimental aortic coarctation

Abstract Background : Use of balloon angioplasty or stent implantation has been reported to be effective in relieving coarctation of the aorta. However, restenosis frequently occurs after balloon angioplasty for native aortic coarctation in small infants, and sometimes develops after stent implantation because of vessel growth. The causes of restenosis remain uncertain. The purpose of this study was to assess the histologic differences in vascular responses to angioplasty using conventional balloon, radiofrequency thermal balloon (RFTB), or stent for experimental aortic coarctation. Methods : The authors surgically created an aortic coarctation model using 14 puppies. Angioplasty using conventional balloon, RFTB, or stent was performed 1 month after the initial operation. At the acute or chronic phase after angioplasty, the animals were killed and histologic studies were performed. Results : More vascular injuries were noted in the specimens from animals undergoing conventional angioplasty than in those with RFTB or stent. However, neointimal hyperplasia was seen more often after RFTB or stent because of the proliferation of smooth muscle cells from the tunica media, caused by secretion of growth factors. Apoptosis reached a peak 1?2 weeks after angioplasty, regardless of the type of intervention. Conclusions : The authors conclude that angioplasty with RFTB or stent can provide relatively small injuries in the vessel wall for aortic coarctation, but care must be taken to prevent restenosis caused by intimal hyperplasia, because neointima hyperplasia is more frequent after RFTB or stent.     

半月神经节射频热凝治疗难治性三叉神经痛

目的探讨半月神经节射频热凝治疗难治性三叉神经痛效果和安全性。方法对三叉神经第Ⅱ支合并第Ⅰ、Ⅲ支或Ⅰ、Ⅱ、Ⅲ支并存疼痛者应用改良的前入路卵圆孔穿刺法行射频热凝毁损术。应用C型臂定位下行卵圆孔穿刺。射频温度控制在75-90℃。结果优良46例，良好1例，总有效率为100％。无严重并发症，随访42例3～18个月，无复发患者。结论在C型臂引导下射频热凝半月神经节毁损术治疗难治性三叉神经痛疗效可靠、定位准确，时患者更安全。     

脉冲电磁场辅助骨细胞培养装置的研制

目的 根据脉冲电磁场对骨细胞的作用机制,设计了能够产生均匀磁场、参数可调的脉冲电磁场发生装置和磁场作用板;叙述了实验装置的硬件构成、软件控制功能以及磁场作用板的设计,并通过试验测试,观察记录了在未加入磁性材料和加入磁性材料后磁场的分布情况.方法 设计了强度为4～6 mT、频率8 Hz的参数可调的脉冲电磁场发生装置和专用的适合细胞培养的磁场作用装置,并对产生的磁场进行了实验测定.结果 实验装置运行时,对各参数检测表明,实验装置满足设计的要求:在加入磁性材料后,磁场作用表面的磁场分布均匀.结论 实验装置满足设计要求,可为进一步进行骨细胞培养提供可靠的实验手段.     

逆行静脉腔内射频闭合并点状抽剥治疗下肢静脉曲张

目的探讨逆行静脉腔内射频闭合并点状抽剥法治疗下肢静脉曲张的效果。方法本组在2005年3月-2007年5月对25例原发性大隐静脉曲张患者,共38条患肢的曲张大隐静脉采用数控射频静脉闭合系统逆行闭合大隐静脉主干并同时用点状抽剥法治疗小腿散在曲张浅静脉。结果随访1～24个月,所有患者大隐静脉主干均闭合良好,无复发,近期疗效满意。结论逆行静脉腔内射频闭合并点状抽剥法治疗下肢静脉曲张具有术式简便、创伤少、疗效可靠、康复快、住院时间短等优点。     

A technique for periorbital syringomas: intralesional radiofrequency ablation

AIM: To evaluate the efficacy of intralesional radiofrequency ablation in the treatment of periorbital syringomas. METHODS: We tried the intralesional radiofrequency ablation for 64 patients with periorbital syringomas from 2007 to 2011. The operation was performed under 2.5 loupe magnifications. The handpiece was assembled with a needle electrode and connected to the radiofrequency ablation apparatus. The electrode was then inserted into the target lesions in dermis and delivering injury to the base of these tumors. Results were assessed clinically by comparing pre- and post-treatment photographs and patient satisfaction rates. RESULTS: Clinical improvement increased with each subsequent treatment session. The percent of patients whose clinic improvement grade were≥3 after each session was respectively 71.9%(Session1), 83.3%(Session2), and 100%(Session3). The statistical results indicated the concordance of the clinical assessment and the satisfaction level of patients (kappa=0.78 of the session1; kappa=0.82 of the session2). The majority of patients had good or excellent cosmetic results. Postoperatively, there were no permanent side effects or recurrences. CONCLUSION: As a new technique of minimally invasion, the intralesional radiofrequency ablation was found to be an effective, inexpensive, highly precise and safe way of treating periorbital syringomas.     

双极射频消融治疗心房纤颤的临床研究

目的对心内直视下双极射频消融治疗心房纤颤(Atrial fibrillation,AF)的临床疗效进行总结及分析。方法回顾性分析在心内直视下瓣膜置换同期行双极AF射频消融术病例219例,术前行心电图及超声心动图了解心律及心功能指标。术中射频消融路线相同,术后定期复查心电图并口服胺碘酮半年,随访半年以上,行心电图出现窦性P波则表明转律成功。结果围手术期死亡5.48%(12/219),出院时窦性心律(Sinus rhythm,SR)79.00%(173/219),非SR 15.53%(34/219)。出院后随访6~58个月,平均(27.96±15.57)个月,随访率83.57%(173/207),失访率16.43%(34/207),随访期间死亡1.73%(3/173),维持SR 89.02%(154/173),非SR 10.98%(19/173)。单因素分析示左房内径(Left atrial diameter,LAD)、年龄及高血压病是影响术后转复的危险因素(P<0.05)。结论心内直视下瓣膜置换同期射频消融治疗AF安全、有效,LAD大、年龄大及高血压病可降低术后转复率。     

特发性室性心动过速的导管射频消融治疗效果

目的 评价导管射频消融(radiofrequency catheter ablation,RFCA)对特发性室速(idiopathic ventricular tachy-cardia,IVT)的治疗效果以及心电图对消融靶点的定位价值.方法 对126例特发性室速患者的电生理资料及RFCA治疗效果进行回顾性分析.多数患者采用激动顺序标测,射频能量采用温控法(60～65℃).结果 126例患者中右室流出道(right ventricular outflow tract,RVOT)IVT 62例、左后间隔IVT 43例,其他部位IVT 21例.本组RFCA的总成功率为87.3%,RVOT-IVT和左后间隔IVT的成功率显著高于其他部位IVT(96.8%和90.7% vs 52.4%,P<0.05).本组8例患者存在发作性晕厥(发作的R-R间期230～260 ms),其中4例合并房室结双径路、2例合并隐匿性房室旁道、2例合并多形性室速.随访6个月至10年,复发9例(复发率为8.2%),均再次RFCA成功.合并心动过速性心肌病者6例,术后3个月心脏大小与心功能均恢复正常.结论 采用激动顺序标测法RFCA治疗IVT成功率高;室速发作时体表心电图对绝大多数室速起源具有定位价值;部分室速可能合并房室旁道或房室结双径路.     

臭氧和脉冲强光对大肠杆菌协同杀灭效果的研究

目的研究走氧和脉冲强光对大肠杆菌的协同杀灭作用。方法对培养基表面人工污染大肠杆菌．进行臭氧和脉冲强光协同杀菌处理．测定大肠杆菌杀灭效果。结果臭氧和脉冲强光协同杀菌效果明显优于臭氧、脉冲强光单独杀菌效果,臭氧先处理脉冲强光后处理的杀菌效果显著大于脉冲强光先处理臭氯后处理的杀菌效果（P〈0．05）。建立了协同杀菌回归方程。试验因素对杀菌效果影响顺序为脉冲强光照射时间〉臭氧处理时间〉脉冲强光照射距离。结论臭氧和脉冲强光联合应用对杀灭大肠杆菌具有显著的协同增效作用。