Impact of varying ablation patterns in a simulation model of persistent atrial fibrillation

BACKGROUND: Several strategies of endovascular ablation with varying success rates and proarrhythmic effects have been proposed to treat persistent atrial fibrillation (AF). Evaluation of ablation patterns by computer simulation provides a tool for examination of its effectiveness and side effects. METHODS AND RESULTS: A biophysical model of the human atria based on magnetic resonance imaging derived geometry and a membrane kinetics model was used. Uniform conduction properties were assigned to the monolayer surface representing the atria. After induction of AF by burst pacing, progressively broader ablation patterns were applied: (A) individual pulmonary vein isolation (PVI); (B) double ipsilateral PVI; (C) double PVI with a roofline; (D) double PVI with a lateral mitral isthmus line, and (E) double PVI with both linear lesions. In addition, the influence of incomplete linear lesions and dilated atria were simulated. The incidence of AF termination was found to increase from pattern (A) to (E). Atrial flutter rate increased with incomplete ablations and in dilated atria. CONCLUSION: Computer simulation of various ablation patterns in persistent AF is feasible and can reproduce clinical results of catheter ablation. This model can be used to develop and simulate new ablation patterns and anticipate success rates and potential adverse effects.     

甘草类制剂不良反应及其机制研究进展

近年来中药及其制剂的安全用药备受国内外学者的关注。综述了甘草酸苷注射液、复方甘草口服液、复方甘草片等甘草类制剂不良反应的研究进展,从其引发的内分泌、心血管、神经、生殖、消化、免疫等多个系统的不良反应进行总结阐述,其中主要涉及到的作用机制包括雌激素样作用、糖皮质激素样作用、盐皮质激素样作用等,希望能够指导甘草及其制剂在临床上的合理使用。     

自拟安胃汤联合兰索拉唑对老年胃溃疡患者胃肠激素及IL-6水平的影响

目的探讨老年胃溃疡患者给予自拟安胃汤联合兰索拉唑治疗对胃肠激素及白细胞介素(IL-6)水平的影响。方法选取2018年1月至2020年12月在本院治疗的老年胃溃疡患者84例作为研究对象,按照随机数字表法分成观察组(42例)和对照组(42例),对照组给予兰索拉唑治疗,观察组给予自拟安胃汤联合兰索拉唑治疗,比较两组患者胃肠激素及IL-6水平。结果两组治疗后胃泌素(GAS)、胃动素(MOT)水平明显提高(P<0.05),观察组水平较对照组明显更高(P<0.05);两组治疗后IL-6水平明显降低(P<0.05),与对照组相比,观察组明显更低(P<0.05)。结论老年胃溃疡患者给予自拟安胃汤联合兰索拉唑治疗,能够改善胃肠激素及IL-6水平,应用价值较高。     

重组酶介导等温扩增技术检测疟原虫方法的建立和评价

目的 建立一种重组酶介导等温扩增技术（RAA）检测疟原虫的方法。方法 针对疟原虫属保守18S小亚基核糖体RNA （18S rRNA）基因设计特异性引物,筛选确定最佳引物对组合并建立疟原虫重组酶介导核酸等温扩增体系。通过该RAA体系检测疟原虫标准质粒、4种疟原虫[恶性疟原虫( Plasmodium falciparum, P.f )、间日疟原虫( P. vivax, P.v)、三日疟原虫( P. malaria, P.m)、卵形疟原虫( P. ovale, Po)]病原体以及其他6种输血传播寄生虫（婴儿利士曼原虫、杜氏利士曼原虫、刚地弓形虫、溶组织阿米巴虫、犬吉氏巴贝西虫、田鼠巴贝虫）,以评估该体系的灵敏度和特异度。 结果 筛选出一组扩增效果较好的引物对,整个RAA体系使用最佳引物对在37 ℃,20 min即可完成扩增,对标准质粒的检测下限为10^-2 copies/μL,恶性疟原虫、间日疟原虫和卵形疟原虫为10² copies/μL,三日疟原虫为10 copies/μL。RAA检测体系未与其他输血传播寄生虫产生交叉反应,特异性良好。应用RAA方法检测外籍学生献血者标本,结果与荧光定量PCR结果一致。结论 成功建立了一种快速、简便和特异的疟原虫RAA检测方法,将会给血液筛查和一些基层偏远医院的临床检测提供很大帮助。     

The role of urine IgG in the progression of IgA nephropathy with a high proportion of global glomerulosclerosis

International Urology and Nephrology - IgA nephropathy (IgAN), the most common glomerulonephritis in the world, is an important cause of end-stage renal disease (ESRD). It is necessary to explore...     

Incidence rate and predictors of recurrent aneurysms after clipping: long-term follow-up study of survivors of subarachnoid hemorrhage

Neurosurgical Review - Recurrent aneurysms are a major cause of re-aneurysmal subarachnoid hemorrhage (aSAH), but information on long-term clip durability and predictors is insufficient. This study...     

慢性硬膜下血肿术后早发性癫痫的影响因素

目的 探讨钻孔引流治疗慢性硬膜下血肿术后早发性癫痫的影响因素。方法 分析2011年1月—2020年1月在龙岩市第二医院和嘉兴市第一医院采用钻孔引流治疗的230例慢性硬膜下血肿患者的临床资料,分析性别、血肿量、血肿厚度、单双侧出血、术前MGS-GCS评分、电解质异常、术后24 h血肿清除率、术后是否颅内积气和是否使用预防性抗癫痫药物与术后早发性癫痫的相关性。结果 230例患者中术后13例发生早发性癫痫,术后早发性癫痫的发生率为5.7%。多因素Logistic回归分析显示术后24 h血肿清除率≥60%（95%CI：1.009~1.092）、未使用预防性抗癫痫药物（95%CI：0.033~0.575）和颅内积气（95%CI：2.113~26.744）与早发性癫痫相关（P＜0.05）。结论 钻孔引流治疗慢性硬膜下血肿术后早发性癫痫的发生与术后24 h血肿清除率和颅内积气相关,预防性使用抗癫痫药物能预防早发性癫痫。 [国际神经病学神经外科学杂志, 2022, 49(3): 21-25.]     

Altered microstructural properties of superficial white matter in patients with Parkinson’s disease

Brain Imaging and Behavior - Parkinson’s disease (PD), a chronic neurodegenerative disease, is characterized by sensorimotor and cognitive deficits. Previous diffusion tensor imaging (DTI)...     

术前焦虑与围术期不良事件相关性的研究进展

术前焦虑是围术期患者最常见的临床问题之一。许多研究表明,术前焦虑与围术期不良事件的发生密切相关,如失眠、术后疼痛、术后恶心呕吐、术后谵妄等。术前焦虑与围术期不良事件发生机制的关联目前尚未完全清楚,可能涉及多个系统功能的调节紊乱。针对术前焦虑进行合理的干预或治疗,或将有助于减少围术期不良事件的发生。本文选择失眠、术后疼痛、术后恶心呕吐及术后谵妄等较为典型围术期不良事件,从术前焦虑与围术期不良事件的关系、发生机制及干预策略等角度予以综述。