不锈钢麻花牵引圈的制作及在管腔器械清洗质量检查中的应用

目的制作不锈钢麻花牵引圈并探讨其在管腔器械清洗质量检查中的应用效果。方法将制作的不锈钢麻花牵引圈用于管腔器械清洗质量的检查,通过与目测+光源放大镜法、探条纱布法、ATP生物荧光法做比较,评价其在管腔器械清洗质量检查中的效果。结果 A类空腔器械清洗质量检查中,麻花牵引圈法、目测+放大镜法和ATP生物荧光法的清洗质量检查合格率差别有统计学意义(P<0.010),两两比较,目测+放大镜法合格率最高,与其他2组的检查合格率差异具有统计学意义(P<0.017),麻花牵引圈法与ATP生物荧光法的检查合格率差异无统计学意义(P>0.017)。B类空腔器械清洗质量检查中,4种清洗质量检查方法合格率差异具有统计学意义(P<0.010),两两比较,目测+放大镜法合格率最高,与其他3组的检查合格率差异具有统计学意义(P<0.008)。麻花牵引圈法、探条纱布法和ATP生物荧光法的检查合格率差异无统计学意义(P>0.008)。结论不锈钢麻花牵引圈在管腔器械清洗质量检查中,能发现目测+放大镜法无法检出的不合格器械,其检测效果与探条纱布法、ATP生物荧光法相当,比ATP生物荧光法...     

应用中国商环行儿童包皮环切的护理干预

目的探讨护理干预对应用中国商环行包皮环切的儿童治疗效果的影响。方法商环包皮环切术100例,按门诊单双分为护理组和对照组,各50例。护理组行针对性护理干预措施,对照组未采取护理。比较两组术中术后24h疼痛评分、术后并发症发生率、伤口愈合情况及满意度。结果护理组疼痛程度、并发症发生率低、伤口愈合时间短且满意度高,与对照组比较差异有统计学意义(均P<0.05)。结论对应用中国商环行包皮环切的儿童护理干预有利于提高疗效。     

Regeneration of ring-shaped lateral meniscus after partial resection of discoid meniscus with anterior cruciate ligament reconstruction

INTRODUCTIONThe ring-shaped lateral meniscus is very rare. Although it is essentially known as a congenital anomaly, a central tear in an incomplete discoid meniscus or an old bucket-handle tear in a meniscus may be easily mistaken for a ring-shaped meniscus. We experienced a ring-shaped lateral meniscus that regenerated after partial resection of a discoid meniscus together with anterior cruciate ligament (ACL) reconstruction.PRESENTATION OF CASEA 37-year-old female patient still experienced unrelenting knee pain 6 months after ACL reconstruction and partial meniscectomy of a discoid lateral meniscus. A repeat arthroscopy was performed. The lateral tibial plateau was covered in the form of a ring by meniscus-like tissue. The meniscus-like tissue appeared to have regenerated inward toward the center from the stump after the partial meniscectomy and was connected from the anterior to posterior horn, forming an interhorn bridge. Partial meniscectomy was repeated. Histologically, the regenerated tissue was not meniscal, but comprised mature fibrocartilage; macroscopically; however, it was very similar to meniscal tissue. Two years after the initial operation, the patient had no complaints and experienced full return of function.DISCUSSIONThe reason for such regeneration is unknown, but may have been attributed to the specific intra-articular environment that developed after the ACL reconstruction.CONCLUSIONThis is the first report of regenerative development of a ring-shaped lateral meniscus. When a ring-shaped lateral meniscus is diagnosed, we must accurately determine whether it is a true congenital anomaly in consideration of the present case.     

肛管直肠环肌群有限元模型应力分析

目的:从力学角度应用试验与仿真相结合对肛管直肠环进行有效预测评估与量化评判。方法:提取直肠癌术后组织标本获得肛管直肠环样本,进行静态拉伸试验,获得肛管直肠环肌群的应力-应变曲线;采用逆向工程的方法将使用MR扫描得到的盆底肛提肌、肛门扩约肌复合体转换为可导入仿真软件的三维几何模型;再使用ABAQUS有限元仿真软件进行仿真分析,模拟肛管直肠环肌群在不同排便条件下所承受的应力情况。结果:采用不同直径的圆柱作用于肛管直肠环,可以有效地模仿人静息状态、强忍状态,力排初状态以及增大腹压的各种活动状态如喷嚏、咳嗽、负重活动。结论:肛管直肠环有限元模型的建立为有效地模拟肛门不同手术方式导致的肛门控便功能障碍研究提供了有效真实的平台。     

Season-related changes in circulating androgen,brain aromatase,and perch-calling in male ring doves

The perch-call of ring doves (Streptopelia risoria) is related to territorial defence and mate attraction. Perch-calls are sexually dimorphic and individually different in structure. The expression of perch-call is androgen-dependent and is controlled by the action of testosterone on the preoptic-hypothalamic areas. However, it is not known whether the acoustic features of the call vary with the reproductive condition. We studied plasma androgen levels, brain steroid metabolism, and perch-calling of male ring doves kept in winter-like (low temperature, short days) or spring-like (mild temperature, long day) conditions. Circulating levels of androgen were higher in males kept on spring-like condition. Spring males spent more time in perch-calling than winter males. However, a detailed analysis of the call structure revealed no difference for any time or frequency parameter between groups. This work shows that in ring doves season-dependent variations in the circulating levels of androgen are correlated with differences in the amount of time males spend in perch-calling. In addition, the study suggests that in adult males the acoustic structure of the perch-calls is not influenced by season-related changes in androgen levels.     

一种新的商环内环内置手术路径在成人包皮环切中的临床应用研究

目的:观察商环内环内置手术路径行成人包皮环切的手术特点及术后并发症。方法:因包皮过长或包茎就诊的528例成年患者采用商环内置手术路径实施商环包皮环切手术,其中包皮过长465例(88.1%),包茎63例(11.9%)。对手术时间、术中出血;术后感染、水肿、伤口裂开、出血进行观察。结果:528例患者手术时间为(3.8±0.3)min;术中出血量为(0.6±0.1)ml;术后2 h疼痛评分为(7.3±0.3)分。67例(12.7%)患者选择不拆环,让环切器自行脱落,脱落时间为(21.6±2.1)d,461例(87.3%)患者术后第7天复诊时选择拆环,给予拆外环处理,拆环时没有出现疼痛。术后感染3例(0.56%),轻度水肿9例(1.70%)。未发生术后出血及切口裂开,患者对外观满意度为98.1%。结论:商环内置式手术方式安全,不需要拆内环,操作更简便,需要的手术器械少,与标准的商环技术相比,缩短了手术时间,术后并发症发生率低,满意度高。不过,仍需要进行随机对照研究来证实这些优势。     

Effects of asymmetric coupling and self-coupling on metastable dynamical transient rotating waves in a ring of sigmoidal neurons

Transient rotating waves in a ring of sigmoidal neurons with asymmetric bidirectional coupling and self-coupling were studied. When a pair of stable steady states and an unstable traveling wave coexisted, rotating waves propagating in a ring were generated in transients. The pinning (propagation failure) of the traveling wave occurred in the presence of asymmetric coupling and self-coupling, and its conditions were obtained. A kinematical equation for the propagation of wave fronts of the traveling and rotating waves was then derived for a large output gain of neurons. The kinematical equation showed that the duration of transient rotating waves increases exponentially with the number of neurons as that in a ring of unidirectionally coupled neurons (metastable dynamical transients). However, the exponential growth rate depended on the asymmetry of bidirectional coupling and the strength of self-coupling. The rate was equal to the propagation time of the traveling wave (a reciprocal of the propagation speed), and it increased near pinned regions. Then transient rotating waves could show metastable dynamics (extremely long duration) even in a ring of a small number of neurons.     

Stability analysis of fractional-order Hopfield neural networks with time delays

This paper investigates the stability for fractional-order Hopfield neural networks with time delays. Firstly, the fractional-order Hopfield neural networks with hub structure and time delays are studied. Some sufficient conditions for stability of the systems are obtained. Next, two fractional-order Hopfield neural networks with different ring structures and time delays are developed. By studying the developed neural networks, the corresponding sufficient conditions for stability of the systems are also derived. It is shown that the stability conditions are independent of time delays. Finally, numerical simulations are given to illustrate the effectiveness of the theoretical results obtained in this paper.     

Round Pendant Around the Neck–Thyroid. A Review

The rare situation of thyroid stone is discussed with literature review and case report. A case of isolated solitary stone of the thyroid is documented here. There are incidences of calcification in the thyroid gland commonly associated with carcinoma thyroid and multinodular goiter. But solitary stone of thyroid is reported rarely and one such case is reported from India. The possibility of malignancy is high, in case of calcification of thyroid swellings. Hence, isolated calcification should be surgically treated even if fine needle aspiration cytology is negative for malignancy.