Occlusion of the cerebral arteries in Recklinghausen's disease

Summary Two children, aged 18 months and 6 years, who had Recklinghausen's disease, had occlusion of cerebral arteries. One child had no motor deficit but the other had right hemiparesis and partial occlusion of the left posterior cerebral artery, a fact not found in the literature.     

超声观察肝癌多次肝动脉栓塞术治疗前后肝脏声像图的变化及其预后的评估

目的探讨超声在评估肝癌肝动脉栓塞术后肝硬变受损程度方面的价值.方法对43例原发性肝癌患者进行了肝动脉栓塞术前与术后临床肝功能检查及超声分析.结果多次肝动脉栓塞术后肝硬变程度加重,根据Child‘s分级肝功能下降率达67.4%,超声检查肝硬变加重率达70%.两者检查结果相一致.结论超声观察肝内回声的变化对评估多次肝癌肝动脉栓塞术后肝功能损害程度有重要作用.     

甲状腺动脉栓塞治疗难治性甲状腺机能亢进

目的 探讨经导管甲状腺动脉栓塞治疗难治性甲状腺机能亢进的方法及疗效。方法 使用高压消毒后明胶海绵、聚乙烯醇(PVA)微球栓塞甲状腺上动脉及下动脉。结果 13例病人甲状腺动脉栓塞成功，颈围缩小，11例T3、T4降至正常，2例轻废增高。结论 经导管甲状腺动脉栓塞治疗难治性甲状腺机能亢进可作为内外科治疗及^131I治疗替代疗法，只要正确掌握操作方法，是安全有效的。     

Use of tactile stiffness to detect fatigue in the latissimus dorsi muscle

In clinical settings, no method has been established to examine the fatigue of a latissimus dorsi muscle (LDM) preconditioned for cardiomyoplasty. We examined the feasibility of measuring muscle stiffness (tactile stiffness) to evaluate muscle fatigue in situ using our tactile sensor. We stimulated canine LDM with burst pacing and monitored both stiffness and tension to determine their relationship. In both dissected LDM and LDM in situ, the decrements of these parameters during burst pacing were compared between preconditioned and unconditioned LDM. In measurement in situ, the sensor probe was placed on the LDM through a small incision. Strong statistical correlation was shown between stiffness and tension (r = 0.935). In decrements of stiffness in situ, there were statistically significant differences between preconditioned and unconditioned LDM. Our tactile sensor system can provide an efficient method for evaluating fatigue of muscles in situ without measuring muscle tension.     

Adaptative effects of loss of vision on upright undisturbed stance

In order to evaluate the long term effect of blindness on an undisturbed postural task, seven blind individuals (BLI) were compared to twelve healthy individuals (REF) who were required to close their eyes. To this aim, centre of pressure (CP) trajectories were recorded through a force platform on which the subjects remained upright. Through a low-pass filter, the vertical projection of the centre of gravity (CG(v)) and consequently the difference CP-CG(v) were estimated. The former represents the controlled variable whilst the latter is assumed to express the resultant joint stiffness. A first analysis consisted in studying the frequency distribution of these motions. Increased mean amplitudes in both elementary motions and no difference between frequency distributions were observed for the BLI when compared to the REF group. These trajectories were then modelled as a fractional Brownian motion process in order to gain insight about the nature of the control mechanisms called into play and their spatio-temporal organisation. Moreover, the main characteristic observed in the BLI group is a decreased in CP-CG(v) motions, which, according to Winter's model, may be related to joint stiffness. In addition, reduced spatial transition point co-ordinates and more deterministic control mechanisms aimed at returning the estimated CG to an equilibrium point during the longest Deltat were observed. This phenomenon is more pronounced in the antero-posterior direction and also allows the blind subject to significantly diminish their CG sways. Finally, these features are discussed in relation to other similarly analysed investigations.     

急进不同海拔地区健康成人动脉血气变化研究

目的：通过对急进不同高海拔地区健康成年人动脉血气变化的研究,探讨高原地区血气变化规律及机体调节习服机制。方法：对急进到海拔2260m和4600m地区共计56名身体健康成年人进行随机抽样分组,分急进后的第1天、7天和15天3个时间段检测血气各项指标,使用SPSS12.0进行统计学分析。结果：①急进高原后1天、7天、15天各血气指标对比PaO2在第1天和第15天存在差异,其它各项指标均无差异性。各时间段均存在着轻度的低氧血症。多数急进者存在着轻度的碱血症;②急进海拔2260m与急进海拔4600m15天后进行血气分析对比,pH、PaO2、AB有差异,PaCO2有显著性差异,而SaO2无差异;④急进海拔2260m15天与海平面地区进行血气分析对比,pH无差异、PaO2有差异,而AB、PaCO2、SaO2、BEB均有显著性差异。急进海拔4600m15天与海平面地区进行血气分析对比,pH、PaO2、AB、PaCO2、BEB均有显著性差异,而SaO2有差异;⑤急进海拔4600m组和当地正常人群组相比,除了SaO2无差异性,其它各血气指标均存在差异和显著性差异。急进组pH、PaCO2、PaO2、AB、BE均略高于当地组。结论：①急进高原后,人体动脉血气在短时间内迅速通过肺功能的应激性调节、血液各缓冲系统的作用等机制达到一个新的平衡,在血气变化方面有着一定的＂高原调节储备＂;②急进高原健康人和当地久居或移居者之间的血气调节机制和＂调节储备＂都是不同的;③SaO2在筛选急性高原反应易感人群时,可能具有一定的价值。     

动态动脉硬化指数联合血清肿瘤坏死因子受体相关因子 6、前蛋白转化酶枯草溶菌素 9对急性分水岭脑梗死病人的预后价值

目的探究动态动脉硬化指数( AASI)联合血清肿瘤坏死因子受体相关因子 6(TRAF6)、前蛋白转化酶枯草溶菌素 9(PCSK9)对急性分水岭脑梗死( CWI)病人的预后价值。方法选取 2019年 8月至 2021年 8月保定市第二中心医院收治的 96例急性 CWI病人为研究组,另取同期体检健康者 80例为对照组。收集病人一般临床资料,并对研究组和对照组的血清 TRAF6、 PCSK9水平及 AASI进行检测;根据研究组病人预后情况将其分为预后良好组(67例)和预后不良组( 29例)多因素 logistic回归分析急性 CWI病人预后的影响因素;绘制 AASI与血清 TRAF6、PCSK9对急性 CWI病人预后评估的受试者操,作特征曲线( ROC曲线)。结果研究组血清 TRAF6(1.48±0.34)μg/L、PCSK9(97.25±14.25)μg/L水平及 AASI(0.56±0.15)高于对照组( 0.87±0.19) μg/L、(82.78±9.17)μg/L、(0.36±0.11)(P<0.05)。预后良好组与预后不良组年龄、美国国立卫生研究院卒中量表( NIHSS)评分、空腹血糖、狭窄程度及血管斑块性质差异有统计学意义( P<0.05)。预后不良组血清 TRAF6(1.77±0.37)μg/L、PCSK9(104.82±17.93)μg/L水平及 AASI(0.62±0.12)高于预后良好组( 1.35±0.21)μg/L、(93.97±12.65)μg/L、0.53±0.09(P<0.05)。多因素 logistic回归分析结果显示 NIHSS评分、狭窄程度、血管斑块性质、 AASI、血清 TRAF6、PCSK9水平是急性 CWI病人预后的影响因素( P<0.05)。 AASI联合血清 TRAF6、PCSK9预测急性 CWI病人预后的 AUC是 0.92,灵敏度为 93.10%,特异度为 76.12%,Youden指数为 0.69,优于 AASI、TRAF6、PCSK9各自单独预测(P<0.05)。结论急性 CWI病人血清 TRAF6、PCSK9水平显著升高,联合 AASI对病人的预后状况具有较高的预测效能,可为临床的合理干预和改善病人预后提供依据。     

距腓前韧带影响踝关节不稳的生物力学研究

目的 探究踝关节不稳中距腓前韧带(anterior talofibular ligament, ATFL)的厚度与弹性模量对踝关节稳定性的影响,为踝关节不稳患者的诊断提供参考依据。 方法 建立踝关节三维有限元模型,改变 ATFL 的厚度与弹性模量,计算踝关节前后向刚度(ankle anteroposterior stiffness, AAS),并作为量化指标评估踝关节稳定性。 结果 ATFL厚度在 0. 78~ 2. 31 mm 范围内引起 AAS 的大幅度变化,且两者关系呈 S 形曲线;ATFL 弹性模量在 60 ~ 400 MPa 变化范围,AAS 随韧带弹性模量增加快速上升。 结论 ATFL 厚度与弹性模量均会影响踝关节的稳定性。     

Comparação entre os Efeitos da Ingestão de Sal do Himalaia e de Sal Comum sobre os Valores de Sódio Urinário e Pressão Arterial em Indivíduos Hipertensos

Background The Himalayan salt (HS) has become a popular alternative for the traditional table salt (TS) due to its health benefit claims, particularly for individuals with arterial hypertension. However, despite the increase in HS consumption, there is still a lack of clinical evidence to support a recommendation for its consumption by health professionals.Objective This cross-over study aimed to compare the impact of HS and TS intake on systolic blood pressure (SBP) and diastolic blood pressure (DBP), and urinary sodium concentration in individuals with arterial hypertension.Methods This study recruited 17 female patients with arterial hypertension who ate out no more than once a week. Participants were randomized into two groups, to receive and consume either HS or TS. Before and after each intervention, participants had their blood pressure measured and urine collected for mineral analysis. A p-value < 0.05 was considered statistically significant.Results There were no statistically significant differences before and after the HS intervention for DBP (70mmHg vs. 68.5mmHg; p=0.977), SBP (118.5 mmHg vs. 117.5 mmHg; p= 0.932) and sodium urinary concentration (151 mEq/24h vs. 159 mEq/24; p=0.875). Moreover, the between-group analysis showed no significant differences after the intervention regarding SBP (117mmHg vs 119 mmHg; p=0.908), DBP (68.5 mmHg vs. 71mmHg; p= 0,645) or sodium urinary concentration (159 mEq/24h vs. 155 mEq/24h; p=0.734).Conclusion This study suggests that there are no significant differences on the impact of HS consumption compared to TS on blood pressure and sodium urinary concentration in individuals with arterial hypertension.