局部伤口换药后加氧气吹干对伤口愈合效果的影响研究

目的 观察在局部伤口换药后加氧气吹干对伤口愈合的效果.方法 以我院2018年1月—2019年1月期间收治的60例局部伤口患者为研究对象,根据项目研究需求并结合患者及其家属意愿,将其分为观察组和对照组,每组各30例.对照组进行常规抗感染服用和涂抹、换药、护架烤灯照射局部,观察组在常规治疗的基础上在换药后加氧气吹干,对两组...     

痔瘘熏洗剂治疗火毒炽盛型低位肛周脓肿术后创面临床观察

目的观察痔瘘熏洗剂熏洗治疗火毒炽盛型低位肛周脓肿切开引流术后创面的临床疗效。方法将40例患者按1∶1原则随机分为治疗组和对照组,治疗组20例采用痔瘘熏洗剂熏洗治疗,对照组20例用皮肤康洗剂熏洗治疗。3周后评价疗效。结果治疗组在减少创面渗液、加快腐肉脱落、促进创面愈合方面明显优于治疗组（P〈0.05,或P〈0.01）。结论痔瘘熏洗剂熏洗治疗火毒炽盛型低位肛周脓肿术后创面的临床疗效确切。     

Vogt Koyanagi Harada disease following a recent COVID-19 infection

A 23-year-old female presented with a 3-day history of bilateral (OU) diminution of vision 3 weeks after COVID-19 infection. Best corrected visual acuity (BCVA) was 20/30 in right eye and 20/40 in left eye. Anterior segment showed OU 1+ cells in anterior chamber and anterior vitreous face. Fundus OU showed disc hyperemia and multiple pockets of subretinal fluid (SRF), confirmed on optical coherence tomography. Fundus fluorescein angiography showed multiple pin point leaks suggestive of Vogt Koyanagi Harada disease. Oral corticosteroids 1 mg/kg/day were started. At 2-months’ follow-up, her BCVA improved to 20/25 OU with complete resolution of SRF.     

The Extracellular Mass to Body Cell Mass Ratio as a Predictor of Mortality Risk in Hemodialysis Patients

The extracellular mass/body cell mass ratio (ECM/BCM ratio) is a novel indicator of nutritional and hydration status in hemodialysis (HD) patients. This study aimed to explore the ECM/BCM ratio as a predictor of mortality risk with nutritional-inflammatory markers in HD patients. A prospective observational study was conducted in 90 HD patients (male: 52.2%; DM: 25.60%). Clinical and biochemical parameters [serum albumin, serum C-reactive protein (s-CRP), interleukine-6 (IL-6)] were analysed and bioelectrical impedance analysis (BIA) was performed. Protein-energy wasting syndrome (PEW) was diagnosed using malnutrition-inflammation score (MIS). Based on BIA-derived measurements, the ECM/BCM ratio with a cut-off point of 1.20 was used as a PEW-fluid overload indicator. Comorbidity by Charlson index and hospital admissions were measured. Out of 90 HD patients followed up for 36 months, 20 patients (22.22%) died. PEW was observed in 24 survivors (34.28%) and all non-survivors. The ECM/BCM ratio was directly correlated with MIS, s-CRP, Charlson index and hospital admissions but was negatively correlated with phase angle and s-albumin (all, p < 0.001). Values of the ECM/BCM ratio ≥ 1.20 were associated with higher probability of all-cause mortality (p = 0.002). The ECM/BCM ratio ≥ 1.20, IL-6 ≥ 3.1 pg/mL, s-CRP and s-albumin ≥ 3.8 g/dL and Charlson index were significantly associated with all-cause mortality risk in multivariate adjusted analysis. This study demonstrates that the ECM/BCM ratio ≥ 1.20 as a nutritional marker and/or fluid overload indicator had a significant prognostic value of death risk in HD patients.     

参麦注射液合血府逐瘀汤治疗缺血性ST-T改变疗效观察

[目的]观察参麦注射液联合血府逐瘀汤治疗缺血性ST-T改变的临床疗效。[方法]将75例有心肌缺血型心电图改变的患者随机分成治疗组40例(以参麦注射液联合血府逐瘀汤治疗)与对照组35例(单纯西药治疗),疗程为14天,比较两组疗效。[结果]治疗组疗效优于对照组。[结论]参麦注射液联合血府逐瘀汤治疗缺血性ST-T改变有较好的疗效。     

生物蛋白胶制剂封堵腹腔镜胆总管探查即时缝合术毕胆漏

目的：总结运用生物蛋白胶制剂封堵腹腔镜胆总管探查即时缝合术毕胆漏的经验。方法：对491例腹腔镜胆总管探查即时缝合术毕37例胆汁渗漏的胆管切口,采用生物蛋白胶或纤维蛋白封闭剂进行封堵。结果：封堵成功34例,术后无胆漏。封堵有效3例,术后胆漏量少且持续时间短。无过敏反应。结论：生物蛋白胶制剂封堵腹腔镜胆总管探查即时缝合术毕胆漏安全、有效、简便。     

Inactivation Rates for Airborne Human Coronavirus by Low Doses of 222 nm Far-UVC Radiation

Recent research using UV radiation with wavelengths in the 200–235 nm range, often referred to as far-UVC, suggests that the minimal health hazard associated with these wavelengths will allow direct use of far-UVC radiation within occupied indoor spaces to provide continuous disinfection. Earlier experimental studies estimated the susceptibility of airborne human coronavirus OC43 exposed to 222-nm radiation based on fitting an exponential dose–response curve to the data. The current study extends the results to a wider range of doses of 222 nm far-UVC radiation and uses a computational model coupling radiation transport and computational fluid dynamics to improve dosimetry estimates. The new results suggest that the inactivation of human coronavirus OC43 within our exposure system is better described using a bi-exponential dose–response relation, and the estimated susceptibility constant at low doses—the relevant parameter for realistic low dose rate exposures—was 12.4 ± 0.4 cm²/mJ, which described the behavior of 99.7% ± 0.05% of the virus population. This new estimate is more than double the earlier susceptibility constant estimates that were based on a single-exponential dose response. These new results offer further evidence as to the efficacy of far-UVC to inactivate airborne pathogens.     

Patterns of Cerebrospinal Fluid Alzheimer’s Dementia Biomarkers in People Living with HIV: Cross-Sectional Study on Associated Factors According to Viral Control,Neurological Confounders and Neurocognition

People living with HIV (PLWH) age with an excess burden of comorbidities that may increase the incidence of age-related complications. There is controversy surrounding the hypothesis that HIV can accelerate neurodegeneration and Alzheimer’s dementia (AD). We performed a retrospective study to analyze the distribution of cerebrospinal fluid (CSF) AD biomarkers (beta amyloid 1–42 fragment, tau, and phosphorylated tau) in adult PLWH (on cART with undetectable viremia, n = 136, with detectable viremia, n = 121, and with central nervous system CNS disorders regardless of viremia, n = 72) who underwent a lumbar puncture between 2008 to 2018; HIV-negative controls with AD were included (n = 84). Five subjects (1.5%) presented CSF biomarkers that were compatible with AD: one was diagnosed with AD, whereas the others showed HIV encephalitis, multiple sclerosis, cryptococcal meningitis, and neurotoxoplasmosis. Regardless of confounders, 79.6% of study participants presented normal CSF AD biomarkers. Isolated abnormalities in CSF beta amyloid 1–42 (7.9%) and tau (10.9%) were associated with age, biomarkers of intrathecal injury, and inflammation, although no HIV-specific feature was associated with abnormal CSF patterns. CSF levels of AD biomarkers very poorly overlapped between HIV-positive clinical categories and AD controls. Despite the correlations with neurocognitive performance, the inter-relationship between amyloid and tau proteins in PLWH seem to differ from that observed in AD subjects; the main driver of the isolated increase in tau seems represented by non-specific CNS inflammation, whereas the mechanisms underlying isolated amyloid consumption remain unclear.     

甲鱼油中ω-3多不饱和脂肪酸的提取与分析

目的为从甲鱼脂肪中提取甲鱼油,并分析其浓度及纯度。方法采用超临界CO2萃取技术,利用低温浓缩工艺富集甲鱼油中DHA和EPA。以超临界提取甲鱼脂肪为原料,用低温浓缩法富集DHA和EPA;从甲鱼脂肪中提取甲鱼油,然后用GC法测定DHA和EPA,并对不同温度、溶剂配比参数进行比较。结果利用超临界CO2萃取技术可以从甲鱼脂肪中获得CO2超临界萃取原油（SFE原油）,并经正交分析得到最佳的组合为A1B3C3,其最优化工艺条件是：压力20MPa,温度50℃;时间4h,CO2用量为2m·lg^-1,EPA和DHA的最高萃取率为：16.32%,SFE原油∶溶剂为1∶12、冷冻8h的条件下,得到的甲鱼油中EPA＋DHA含量为26.39%。结论超临界CO2萃取技术简便易行,还具有安全可靠,无污染等优点。因此该方法为开发和综合利用甲鱼资源开辟了新的应用途径。     

205例HIV阴性梅毒患者脑脊液白蛋白商数及IgG指数分析

目的：了解HIV阴性梅毒患者中脑脊液白蛋白商数及IgG指数的分布特征。方法：共收集205例梅毒患者脑脊液标本,其中124例非神经梅毒, 81例神经梅毒。使用SPSS 25.0 软件进行统计学分析,计算两组患者白蛋白商数及IgG指数的敏感性、特异性及诊断效率。结果：神经梅毒组白蛋白商数及IgG指数分别为(6.98±3.80)和(1.51±1.16)高于非神经梅毒组(4.63±2.03)和(0.67±0.48),差异有统计学意义(均P＜0.001)。在神经梅毒患者中,脑脊液TRUST阳性患者IgG指数均值为(2.14±1.31)较阴性患者（1.10±0.84）高, 差异有统计学意义(P＜0.001)。白蛋白商数在神经梅毒诊断方面,敏感性为73.33%,特异性66.29%,阳性预测值27.16%,阴性预测值93.55%,诊断效率67.32%。IgG指数在神经梅毒诊断方面,敏感性为59.60%,特异性79.25%,阳性预测值72.84%,阴性预测值67.74%,诊断效率69.76%。结论：白蛋白商数及IgG指数可用于神经梅毒的辅助诊断。