应用Pentacam评价激光周边虹膜切除术前后前房形态参数的改变

目的：通过比较Pentacam测量的可疑房角关闭患者行激光周边虹膜切除术前后各项参数,探讨评价前房形态改变的敏感参数。
　　方法：诊断为可疑房角关闭并接受激光周边虹膜切除术治疗的患者33例60眼。患者术前及术后1 d行Pentacam检查,观察前房各项参数在激光前后的变化,进行配对 t检验。
　　结果：与术前相比较,中央前房深度差异无统计学意义,周边前房深度明显加深,差异有统计学意义;前房容积明显增加,差异有统计学意义。前房夹角变宽,从治疗前的(22.26°±5.18°)增加为治疗后的(26.42°±5.20°),差异有统计学意义。
　　结论：激光周边虹膜切除术可以显著增加可疑房角关闭患眼的周边前房深度和前房容积,周边前房深度和前房容积可作为评价前房形态改变的敏感参数。     

不同分级原发性高血压对角膜内皮细胞的影响

目的：通过角膜内皮细胞计探讨不同分级原发性高血压对角膜内皮细胞的影响。

方法：采用病例对照研究,病例组为确诊原发性高血压的患者71例142眼,其中高血压1级组22例44眼、高血压2级组23例46眼、高血压3级组26例52眼; 对照组为健康查体者69例138眼,两组的年龄、性别差异均无统计学意义(P>0.05),且均排除全身、眼部疾病史。检测角膜内皮细胞的平均细胞面积、平均密度、变异系数及六角形细胞比例,两组进行统计学比较。

结果：病例组与对照组角膜内皮细胞的平均细胞面积、细胞密度的差异无统计学意义(P>0.05),但病例组较对照组的变异系数增大(t=3.34,P<0.05),六角形细胞比例下降(t=-2.07,P<0.05); 病例组中高血压1级组、2级组、3级组的平均细胞面积、细胞密度的差异无统计学意义(P>0.05),而变异系数、六角形细胞比例的差异有统计学意义(P<0.05)。

结论：原发性高血压患者的角膜内皮细胞与对照组相比,变异系数增大、六角形细胞比例下降,高血压分级不同其变异系数、六角形细胞比例不同。     

Utilization of anticoagulants and outcomes in STEMI patients undergoing PPCI in the US hospitals: Bivalirudin,heparin plus GPI or heparin alone?

Objective. Despite major trials showing the opposite, one of three small randomized trials conducted outside the US has raised questions about whether heparin alone is a viable antithrombotic strategy for primary percutaneous coronary interventions (PPCI). We determined the frequency and in-hospital outcomes of anticoagulation strategies in patients undergoing PPCI. Methods. We analyzed records from 2008 through 2013 in the Premier Research Database of patients hospitalized with ST-segment elevation myocardial infarction (STEMI) undergoing PPCI. Patients were categorized into one of four anticoagulation strategies: bivalirudin alone, bivalirudin plus glycoprotein IIb/IIIa inhibitors (GPI), unfractionated or low-molecular-weight heparin alone or heparin plus GPI. In-hospital clinical outcomes were compared between treatment groups after propensity score matching. Results. Among 114,134 eligible STEMI patients, heparin alone was the least frequent anticoagulation strategy, used in 14.4% to 18.1% of cases per year. Bivalirudin alone nearly tripled during the study period, from 12.7% to 37.8% and surpassed that of heparin plus GPI by 2013. Bivalirudin alone performed better than heparin alone for mortality (4.7% vs 5.3%, p = 0.010), clinically apparent bleeding (5.7% vs 6.7%, p < 0.001), transfusion rates (4.1% vs 4.8%, p = 0.003) and mean length of stay (4.1 vs 4.2 days, p < 0.001). The in-hospital death rate was lower with heparin plus GPI than with heparin alone (4.9% vs 5.9%, p < 0.001), but clinically apparent bleeding was higher in heparin plus GPI than in heparin alone (9.4% vs 7.1%, p < 0.001). Conclusion: In patients hospitalized for STEMI undergoing PPCI, heparin alone is not commonly used and is inferior to bivalirudin for mortality, bleeding and length of stay outcomes. Heparin is also inferior to heparin plus GPI for ischemic protection but associated with less bleeding.     

Anterior segment changes after pharmacologic mydriasis using Pentacam and optical coherence tomography in angle closure suspects

AIM:To compare the dynamic changes of anterior segment parameters especially iris morphology induced by pharmacologic mydriasis between angle closure suspects and normal controls.METHODS:The study group comprised 19 eyes of 19 angle closure suspects and 19 eyes of 19 age- and sex-matched normal open-angle eyes. Pentacam and optical coherence tomography measurements before and 30min after instillation of compound tropicamide eye drop were performed and compared. Biometric evaluations of iris tomography and anterior chamber angle were estimated by a customized image-processing software.RESULTS:Baseline axial length, iris cross sectional area and volume did not differ significantly between angle closure suspects and normal controls. Angle closure suspects had smaller pupil size, narrower anterior segment dimension and axial length, thinner iris with greater curve in comparison with normal controls. Pharmacologic mydriasis led to significant increments in iris thickness at 750 μm, anterior chamber depth and volume, whereas significant decrements in iris curve, cross sectional area and volume in both groups. Angle opening distance at 500 μm was increased significantly in normal controls (from 0.465±0.115 mm to 0.539±0.167 mm, P=0.009), but not in angle closure suspects (from 0.125±0.100 mm to 0.145±0.131 mm, P=0.326). Iris volume change per millimeter of pupil dilation (△IV/△PD) decreased significantly less in angle closure suspects than normal controls (-2.47±1.33 mm² vs -3.63±1.58 mm², P=0.019). Linear regression analysis showed that the change of angle opening distance at 500 μm was associated most with the change of central anterior chamber depth (β=0.841, P=0.002) and △IV/△PD (β=0.028, P=0.002), followed by gender (β=0.062, P=0.032).CONCLUSION:Smaller iris volume decrement per millimeter of pupil dilation is related significantly with the less anterior angle opening in angle closure suspects after pharmacologic mydriasis. Dynamic iris change may be as a prospective indicator of iris compressibility and angle closure glaucoma.     

Recent advances on the δ opioid receptor: from trafficking to function

Within the opioid family of receptors, δ (DOPrs) and μ opioid receptors (MOPrs) are typical GPCRs that activate canonical second-messenger signalling cascades to influence diverse cellular functions in neuronal and non-neuronal cell types. These receptors activate well-known pathways to influence ion channel function and pathways such as the map kinase cascade, AC and PI3K. In addition new information regarding opioid receptor-interacting proteins, downstream signalling pathways and resultant functional effects has recently come to light. In this review, we will examine these novel findings focusing on the DOPr and, in doing so, will contrast and compare DOPrs with MOPrs in terms of differences and similarities in function, signalling pathways, distribution and interactions. We will also discuss and clarify issues that have recently surfaced regarding the expression and function of DOPrs in different cell types and analgesia.

LINKED ARTICLES

This article is part of a themed section on Opioids: New Pathways to Functional Selectivity. To view the other articles in this section visit http://dx.doi.org/10.1111/bph.2015.172.issue-2     

The oral health care experiences of NSW Aboriginal Community Controlled Health Services

Objectives: Aboriginal people continue to experience a disproportionately heavy burden of oral disease. A range of oral health services may be available to Aboriginal communities, including those provided by Aboriginal Community Controlled Health Services (ACCHSs). This study explored the oral health care experiences and activities of ACCHSs to inform policy and program decision making. Methods: Mixed methods, including an online survey and semi‐structured interviews with senior ACCHS staff, were used. Areas of inquiry included perceived community need for oral health care, oral health care models, accessibility of other oral health services and barriers to providing oral health care. Twenty‐nine NSW ACCHSs participated in the study. Results: The activities of NSW ACCHSs in oral health care are diverse and reflect the localised approaches they take to delivering primary health care. ACCHSs commonly face barriers in delivering oral health care, as do Aboriginal communities in accessing other oral health services. Conclusion: NSW ACCHSs are important but under‐acknowledged providers of a range of oral health services to Aboriginal communities and are well placed to provide this care as part of their comprehensive primary health care model. Implications: ACCHS roles in improving Aboriginal oral health would be strengthened by greater acknowledgement of their contributions and expertise and the development of transparent, long‐term funding policies that respond to community need.     

Surveillance of injecting‐related injury and diseases in people who inject drugs attending a targeted primary health care facility in Sydney's Kings Cross

Objective: This study examined the prevalence of injecting‐related injuries and diseases (IRIDs) and associated risk factors among people who inject drugs (PWID) attending a primary health care facility in Sydney's Kings Cross. Methods: We calculated prevalence of a wide range of IRIDs utilising data reported by 702 PWID who completed a clinician‐administered survey at their first visit. Multivariable logistic regressions identified factors independently associated with at least one episode of: i) cutaneous and ii) non‐cutaneous IRIDs. Results: Lifetime prevalence of cutaneous IRIDs was 23%. Forty‐two per cent of PWID with a history of abscess attended hospital at their most recent episode. Female gender, lifetime receptive syringe sharing (RSS), injecting while in custody, and ever injecting in places other than the arm were independently associated with reporting at least one episode of cutaneous IRIDs. Ever injecting in sites other than the arm, injecting for five or more years and lifetime history of RSS were independently associated with at least one episode of non‐cutaneous IRIDs. Conclusions: IRIDs are a substantial health issue for PWID. Their ongoing surveillance is warranted particularly in primary care settings targeting PWID to inform prevention and early management, thus reducing complications that may require hospital admission.     

注意缺陷多动障碍共患数学学习困难儿童韦氏儿童智力结构特征

目的探讨合并数学困难(mathematical difficulties,MD)的注意缺陷多动障碍(attention deficit hyperactivity disorder,ADHD)儿童在韦氏儿童智力量表第四版(Wechsler Intelligence Scale for Children-The Fourth Vision,WISC-Ⅳ)中的智力结构特征。方法选取根据美国《精神障碍诊断和统计手册第四版》(Diagnostic and Statistical Manual,DSM-Ⅳ)诊断标准确诊为ADHD且数学成绩低于同年级P10、语文成绩不低于同年级P50的儿童30名,并按性别、年龄匹配抽取确诊为ADHD且语文、数学成绩不低于同年级P25的30名作为对照组。使用WISC-Ⅳ对两组儿童的智力结构特点进行比较。结果研究组儿童总智商及四指数均低于对照组儿童(P0.05),两组儿童在字母-数字排序、背数、译码、矩阵推理、积木、理解等分测验的差异有统计学意义(P0.05)。结论 WISC-Ⅳ可以全面评估儿童的一般认知功能,MD-ADHD儿童有独特认知特点,应根据与数学能力相关的认知缺陷进行个体化的科学干预。     

基层医疗卫生机构建立继续医学教育合作平台的思考

根据部队基层医疗卫生机构开展继续医学教育的实际困难,结合军队医院优势资源,建立继续医学教育合作平台,运用多种形式开展继续医学教育,提升基层医疗卫生机构人员的技能水平,进而提高保障能力.