FEMLAB对OCT在脑外科手术中应用可行性的仿真分析

光学相干层析技术是一种高分辨率成像方法。它是一种无损伤、非介入、非离子辐射的探测技术，具有较高的空间分辨率。有限元分析（FEA）是用于工程科学的重要工具，FEMLAB（Finite Element Modeling Laboratory）是基于偏微分方程的对科学和工程问题进行建模和仿真计算的交互式系统。本文简要介绍了OCT成像技术的原理及FEMLAB的应用步骤，重点用FEMLAB软件对脑组织内光场的分布情况进行分析，从而利用分析结果论证OCT成像在脑外科手术中应用的可行性。     

保守处理一例ERCP致围十二指肠穿孔

本文介绍一例ERCP术中操作不当导致围十二指肠穿孔的诊断和治疗经过,分析发现系粗暴操作致围十二指肠穿孔,导致消化液外泄引发腹腔内炎症反应,经保守处理避免了手术等进一步损伤.本例虽保守处理效果满意,但此类并发症应预防为主.     

Highly covalent molecular cage based porous organic polymer: pore size control and pore property enhancement

It remains a great challenge to effectively control the pore size in porous organic polymers (POPs) because of the disordered linking modes. Herein, we used organic molecular cages (OMCs), possessing the properties of fixed intrinsic cavities, high numbers of reactive sites and dissolvable processability, as building blocks to construct a molecular cage-based POP (TPP-pOMC) with high valency through covalent cross coupling reaction. In the formed TPP-pOMC, the originating blocking pore channels of TPP-OMC were “turned on” and formed fixed pore channels (5.3 Å) corresponding to the connective intrinsic cavities of cages, and intermolecular pore channels (1.34 and 2.72 nm) between cages. Therefore, TPP-pOMC showed significant enhancement in Brunauer–Emmett–Teller (BET) surface area and CO₂ adsorption capacity.

By utilizing the cage to framework strategy, the blocking pores of the cage itself were “turned on” to construct a highly covalent molecular cage based porous organic polymer.     

Predictors of post coronary artery bypass grafting atrial fibrillation

Objective: To investigate the incidence and relative risk factors of post coronary artery bypass grafting(post-CABG) atrial fibrillation (AF). Methods: 312 patients with CABG were reviewed and divided into an AF group and a non-AF group. Statistical analysis was used to compare the data between the two groups and screen for risk factors of post-CABG AF. Results: 103/312(33.01%) patients developed post-CABG AF. Univariate analysis showed that patients in AF group compared with those in non-AF group were more likely to have advanced age (≥ 70 years), early postoperative withdrawal of β-blockers, hypertension, left atrial enlargement ( ≥40 mm), a history of AF, prolonged p-wave duration ( ≥ 120 ms) and increased number of grafts (≥3). Multivariate logistic regression analysis showed that advanced age (≥70 years), early postoperative withdrawal of β-blockers, hypertension, left atrial enlargement (≥40 mm) and a history of AF were highly related to post-CABG AF. Conclusion: The incidence of AF in patients following CABG was 33.01% in this study. Advanced age, early postoperative withdrawal of β-blockers,hypertension, left atrial enlargement and a history of AF were independent risk factors of post-CABG AF.     

Inhibitory effects of the atypical antipsychotic,clozapine, on voltage-dependent K+ channels in rabbit coronary arterial smooth muscle cells

To investigate the adverse effects of clozapine on cardiovascular ion channels, we examined the inhibitory effect of clozapine on voltage-dependent K⁺ (Kv) channels in rabbit coronary arterial smooth muscle cells. Clozapine-induced inhibition of Kv channels occurred in a concentration-dependent manner with an half-inhibitory concentration value of 7.84 ± 4.86 µM and a Hill coefficient of 0.47 ± 0.06. Clozapine did not shift the steady-state activation or inactivation curves, suggesting that it inhibited Kv channels regardless of gating properties. Application of train pulses (1 and 2 Hz) progressively augmented the clozapine-induced inhibition of Kv channels in the presence of the drug. Furthermore, the recovery time constant from inactivation was increased in the presence of clozapine, suggesting that clozapine-induced inhibition of Kv channels is use (state)-dependent. Pretreatment of a Kv1.5 subtype inhibitor decreased the Kv current amplitudes, but additional application of clozapine did not further inhibit the Kv current. Pretreatment with Kv2.1 or Kv7 subtype inhibitors partially blocked the inhibitory effect of clozapine. Based on these results, we conclude that clozapine inhibits arterial Kv channels in a concentration- and use (state)-dependent manner. Kv1.5 is the major subtype involved in clozapine-induced inhibition of Kv channels, and Kv2.1 and Kv7 subtypes are partially involved.     

Changes in the prevalence of comorbidity of mental and physical disorders in Singapore between 2010 and 2016

INTRODUCTIONFew studies have examined the changes in the prevalence of comorbidity of mental and physical disorders in recent years. The present study sought to examine whether the prevalence of comorbidity of mental and physical disorders in Singapore showed any changes between 2010 and 2016.METHODSWe extracted data from two repeated nationally representative cross-sectional surveys conducted among resident adults aged ≥ 18 years in Singapore. Significant changes were tested using pooled multinomial logistic regression analyses.RESULTSThe prevalence of comorbid mental and physical disorders increased significantly from 5.8% in 2010 to 6.7% in 2016. Among those with physical disorders, there were significant increases over time in the prevalence of comorbid generalised anxiety disorder (GAD) (0.1% vs. 0.4%) and obsessive-compulsive disorder (OCD) (1.4% vs. 3.9%) in diabetes mellitus, and alcohol dependence in cardiovascular disorders (0.1% vs. 1.3%). Among those with mental disorders, there were significant increases over time in the prevalence of comorbid diabetes mellitus in OCD (4.1% vs. 10.9%), cancer in major depressive disorder (0.4% vs. 2.4%), and cardiovascular disorders in GAD (0.4% vs. 6.7%) and alcohol dependence (0.9% vs. 11.8%). Significant changes in the overall prevalence of comorbid mental and physical disorders were also observed across age group, education and employment status.CONCLUSIONThe prevalence of comorbid mental and physical disorders increased significantly over time. This finding supports the need for more appropriate clinical management with better integration between mental health and general medical care professionals across all aspects of the healthcare system to treat this comorbidity in Singapore.     

复旦中文版神经肌肉疾病运动功能评估量表在儿童和青少年中的信度和效度研究

目的：验证复旦中文版神经肌肉疾病（NMD）运动功能评估量表（MFM）在中国儿童和青少年NMD中的信度和效度。 方法：2013年6月至2017年7月在复旦大学附属儿科医院（我院）神经科经基因检测或肌肉活检明确诊断为各类NMD、＞2岁且在我院康复科接受过复旦中文版MFM 20和MFM 32评估的患儿,排除1年内接受过手术、具有严重认知障碍和测试前3 d内从事过严重影响体力的活动患儿。2名物理治疗师同时进行MFM 20和MFM 32测试,检验不同测试者间的信度;同一评价者在第1次评价后间隔3~7d进行第2次评价,检测重测信度;以6 min步行距离（6MWT）和4项功能性计时测试为效度指标;通过分析MFM分值与之的相关性确定关联效度。通过分析纳入对象中杜氏进行性肌营养不良（DMD）患儿的MFM分值与北极星移动量表（NSAA）分值之间的相关性确定关联效度。 结果：372例患儿符合本文纳入排除标准,平均（6.5±2.7）岁,<7岁222例,男性338例,其中DMD 263例,重测信度（2~7岁16例,>7岁38例）和测试者间信度（2~7岁16例,＞7岁29例）检测结果显示,MFM 32和MFM 20的总分和各分区分值ICC=0.89~0.97。基于372例患儿,MFM 32和MFM 20的总分和D1区分值与6MWT和功能性计时测试结果具有中等和较强的相关性（r=0.48~0.73）,与D2和D3分区的分值相关性为中等和较弱。在263例DMD患儿中,MFM 32和MFM 20的总分和D1区分值与NSAA分值的相关性为强和极强相关性。 结论：复旦中文版MFM量表在儿童和青少年NMD患儿中具有很好的信度和效度,可以有效地测定NMD患儿的运动功能状态。