根据慢性阻塞性肺疾病全球创议(GOLD)的定义，慢性阻塞性肺疾病急性加重(AECOPD)是“在COPD的自然病程中发生的事件，气紧、咳嗽或／和咳痰等基础症状加重超出正常的日间变异的范围，急性发病，可能需要改变常规的治疗”[1]。AECOPD意味着对医疗卫生资源耗用的增加，如非预约的就医、使用药物增加，使用抗生素或口服皮质激素甚至住院，等等。仅仅依据是否占用卫生资源来定义AECOPD并不适当，这一点还要取决于医疗卫生资源的可获得性，同时有研究提示部分AECOPD可以是自限性的，特别是轻度急性加重。另一方面，占用医疗卫生资源的形式可以大致评估AECOPD的严重程度，如需要增加常规的吸人性药物常常意味着轻度AECOPD，需要短程口服抗生素或糖皮质激素意味着中度AECOPD，而需要住院者多为重度AECOPD。AECOPD是导致COPD患者健康状态降低乃至死亡的主要原因，也是耗用医疗卫生资源从而构成COPD疾病负担的主要部分，需要采用有力的干预措施以降低其发生率[2]。
ARDS 是引起重症患者呼吸衰竭的主要原因, 尽管医疗技术有了很大的进步, 但对ARDS 的治疗只局限在器官支持层面, 其病死率仍高达40% [ 1] 。ARDS的主要病理改变为肺泡上皮细胞和毛细血管内皮细胞受损, 通透性增加, 富含蛋白质的液体渗出积聚于肺间质和肺泡。因此促进损伤肺毛细血管内皮细胞和肺泡上皮细胞的有效修复可能是ARDS治疗的关键所在。随着干细胞工程学的发展, 间充质干细胞( MSC) 作为一种理想的组织修复来源, 在ARDS 治疗中的应用受到越来越多的关注, 这可能为ARDS 的治疗开辟一条新的途径。
目前哮喘的治疗已经取得了显著的进步, 大多数哮喘按全球哮喘防治创议( GINA) 推荐的治疗方案进行规范治疗都可以获得良好的临床控制, 但仍有部分中重度患者难以获得良好的临床控制, 所以仍有必要探索针对这一部分哮喘人群的更好的干预措施。
【Abstract】 Objective To review the progress in pathoanatomy, diagnosis, and treatment of posterolateral rotatory instability (PLRI) of the elbow. Methods Related literature concerning PLRI of the elbow was extensively reviewed, comprehensive analysis was done. Results The lateral collateral ligament complex (LCLC), radial head, capitellum, and coronoid process are important constraints to PLRI. Muscle groups that cross the lateral elbow are secondary constraints to PLRI. Clinical examination includes lateral pivot-shift test, lateral pivot-shift apprehension test, chair sign, active floor push-up sign, tabletop relocation test, and posterolateral rotatory drawer test. Radiology, arthroscopy, and ultrasound can help diagnosis of PLRI. Reconstruction of bony fixation or soft tissue fixation can be used for treatment of injured LCLC. Conclusion The primary constraints to PLRI is LCLC. Ultrasound imaging is accurate for identification and measurement of normal LCLC. Therefore, ultrasound may prove valuable in assessment of abnormal lateral ulnar collateral ligaments. Reconstruction of soft tissue fixation, which can avoid iatrogenic fracture, is a selective treatment method.
Objective To reviewe the research progress of liposomes as antibiotic carriers. Methods Domestic and abroad literature concerning liposomes as antibiotic carriers was reviewed and analyzed thoroughly. Results Liposomes as antibiotic carriers can significantly improve drug distribution, enhance antibacterial activity, and reduce the side effects of antibiotics during treatment. But it also has some problems, such as poor physical and chemical stabilities and low encapsulation efficiency. Conclusion Liposomes as antibiotic carriers can reduce the drug toxicity, improve drug biodistribution, and pharmacokinetics, and bring the dawn to completely curing infections disease.
Objective To review the progress in the diagnosis and treatment of tarsal coal ition. Methods Recent l iterature concerning the diagnosis and treatment of tarsal coal ition was reviewed. Results Tarsal coal ition is a bridge between the tarsal bones of the foot. The most common types are talocalcaneal and calcaneonavicular coal itions. Calcaneonavicular coal itions can be diagnosed with an oblique radiograph of the hindfoot. Most talocalcaneal coal itions require computer tomography for diagnostic confirmation. Magnetic resonance imaging may be useful for diagnoses of cartilaginous andfibrous coal ition. Casting is the usual initial treatment for the symptomatic individual. For patients with treatment failure and no degenerative changes, resection of the coal ition can be performed with good results. Isolated subtalar fusion may be performed for patients with failure of talocalcaneal resections. For patients undergoing failure of subtalar fusions and calcaneonavicular resection, tri ple arthrodesis may be performed. During minimally invasive operation, operation indications should be strictly controlled. Conclusion The diagnosis method of tarsal coal ition is clear. The cl inical manifestation combined with imaging examination can improve the diagnosis rate. The surgical indication of tarsal coal ition remains controversial, the randomized prospective studies are still required.