目的 探讨阳性强化法对社区门诊静脉输液患儿穿刺疼痛及依从性的影响。方法 选取社区门诊2014年4月—2016年4月收治的100例行静脉输液治疗的患儿作为研究对象,采取随机数字表法将其分成两组,每组50例。观察组患儿给予阳性强化法干预,对照组给予常规护理干预,对比两组患儿穿刺疼痛相关指标、穿刺效果、患儿静脉输液依从性及患儿家长的满意度。结果 观察组患儿疼痛面容持续时间明显短于对照组,穿刺后心率明显慢于对照组,啼哭时间>30s的患儿占比明显低于对照组(P<0.01)。观察组一次穿刺成功率、穿刺耗时>5min占比分别为94.00%、24.00%,对照组分别为74.00%、62.00%,观察组一次穿刺成功率明显高于对照组,穿刺耗时>5min占比明显低于对照组(P<0.01)。观察组患儿静脉输液依从率为90.00%,与对照组的66.00%对比有明显上升(P<0.01)。观察组患儿家长满意度为96.00%,与对照组的80.00%对比有明显上升(P<0.05)。结论 对社区门诊静脉输液患儿实施阳性强化法干预可有效减轻穿刺疼痛,提高患儿的输液依从性,患儿家长满意度高。

Objective To explore positive reinforcement on pain and compliance of puncture to children in community outpatients with intravenous infusion. Methods Select 100 cases of children who receive intravenous infusion in community outpatients from April 2014 to April 2016 as research objectives and divide them into two groups randomly with each group of 50 cases. Provide positive reinforcement to observation group while provide routine nursing to control group. Compare two groups' puncture pain relevant indicator, puncture effect, children's intravenous infusion compliance and parents' satisfaction. Results Children in observation had less duration of pain face expression, lower heart rate after puncture and less children crying >30s than those in control group (P<0.01). Observation group's first puncture success rate, puncture time duration >5mins rate were 94.00% and 24.00% respectively while control group's data were 74.00% and 62.00%. Observation group's first success rate was significant higher than that of control group. Observation group's puncture time duration >5mins rate was significant lower than that of control group (P<0.01). Children's intravenous infusion compliance rate in observation group was 90.00% which was significant higher than control group's 66.00% (P<0.01). Parents satisfaction rate in observation groups was 96.00% which was significant higher than control group's 80.00% (P<0.05). Conclusion Implementing positive reinforcement on children in community outpatient may help to relieve puncture pain, improve children's compliance to intravenous infusion and increase parents' satisfaction.

目的 利用基质辅助激光解吸电离飞行时间质谱系统(VITEK-MS)对体液培养阳性瓶进行直接鉴定,探索快速诊断临床致病菌的新策略。方法 收集体液培养阳性瓶,不经琼脂平板培养,直接利用VITEK-MS进行鉴定,并与传统生化鉴定的方法进行比较分析。结果 50例体液培养阳性瓶中,传统细菌鉴定法检出47株阳性菌,3例阴性;而VITEK-MS直接鉴定法检出31株阳性菌,同样3例阴性。VITEK-MS直接鉴定法灵敏度达65.96%,特异度为100%,临床符合率为68%。鉴定时间从24小时缩短到2小时。结论 利用VITEK-MS质谱系统直接鉴定体液培养阳性标本中的病原菌,能有效缩短细菌鉴定时间,准确快速地诊断临床致病菌。

Objective To find a fast method for detection of pathogens in positive culture bottles by using the VITEK-MS system. Methods VITEK-MS microbial identification system was used to directly identify the bacteria in the positive culture bottles, without culture on agar plates. The identification results were further compared with those by the traditional biochemical identification. Results Forty-seven bacterial strains were identified by traditional biochemical methods among 50 positive culture bottles, and 3 of them were negative. Of these 50 samples, thirty-one bacterial strains were identified by VITEK-MS and 3 were also negative. The sensitivity and specificity for direct VITEK-MS identification were 65.96% and 100%, and the clinical coincidence rate was 68%. The turn around time for identification was reduced from 24 to 2 hours. Conclusion Direct identification of bacterial pathogens in positive culture bottles by VITEK-MS could reduce turn around time, and lead to accurate and fast diagnosis.

目的 探讨两种不同治疗方案治疗老年糖尿病合并初治涂阳肺结核患者的临床疗效。方法 将85例老年糖尿病合并初治涂阳肺结核患者分为每日疗法组(n=43)和间歇疗法组(n=42)。比较两组2、3、6个月及疗程结束痰菌转阴率、胸片吸收情况、并发症发生率。结果 两组治疗2个月痰菌转阴率每日疗程组高于间歇疗法组,但两组间无差异,但5、6个月末及疗程结束转阴率每日疗法均高于间歇疗法(P<0.05);治疗后每日疗程组病灶总吸收率(97.62%)高于间歇疗法组(79.07%),且差异有统计学意义(P<0.05);治疗过程中两组出现不良反应情况相比较差异无统计学意义(P>0.05)。结论 使用每日疗法并适当延长强化期及巩固期疗程治疗老年糖尿病合并初治涂阳肺结核的痰菌转阴率及病灶吸收率均优于间歇疗法,且安全性两者无差异,值得临床借鉴。

目的 了解河源市无偿献血人群中丙型肝炎病毒(HCV)感染情况及HCV感染合并乙型肝炎病毒(HBV)、人类免疫缺陷病毒(HIV)以及梅毒螺旋体(TP)感染的情况,为当地预防和控制输血传播性疾病提供实验室依据。方法 选择2010年1月1日—2015年12月31日河源市中心血站无偿献血者71 618例,采用酶联免疫吸附试验(ELISA)方法检测其血浆抗-HCV、乙型肝炎表面抗原(HBsAg)、抗-TP及HIV(Ag/Ab),统计分析抗HCV阳性无偿献血者合并感染HBV、HIV和TP的情况。结果 71 618例无偿献血者标本中抗-HCV、HBsAg 、抗-TP及HIV(Ag/Ab) 阳性率分别为0.56％(402例)、1.48％(1 062例)、1.14％(821例)、0.09％(61例);初次献血者抗-HCV、HBsAg 、抗-TP及HIV(Ag/Ab)阳性率均高于多次献血者(P＜0.05);402例抗-HCV阳性无偿献血者中合并HBsAg、抗-TP、HIV(Ag/Ab) 阳性率分别为1.74%(7例)、4.98%(20例)、0.25%(1例)。结论 抗-HCV阳性献血者合并TP感染率显著高于抗-HCV阴性无偿献血者, HCV合并HBV、HIV感染率低。

目的 分析经直肠彩超引导下不同前列腺穿刺方式的阳性率及其相关因素,探讨安全的穿刺方案。方法 回顾性分析接受经直肠彩超引导下前列腺穿刺的701例患者临床资料,所有患者均接受系统性13点穿刺活检,并假设13点穿刺中减少前列腺中线3个穿刺点为10点穿刺术式,加之标准的6点穿刺术式。比较上述穿刺术式的阳性率,分析T-PSA、前列腺体积、PSA体积密度(PSAD)、有无前列腺结节对穿刺阳性率的影响。结果 随前列腺穿刺针数的增加,活检阳性率增高。同一穿刺方式,不同T-PSA组间、不同前列腺体积组、不同PSAD组阳性率有差异。T-PSA>100 ng/mL时,三种穿刺方式的阳性率无差异;T-PSA<100 ng/mL时,6点穿刺法阳性率较低,而10点穿刺、13点穿刺阳性率无差异。前列腺体积>80 mL时,不同穿刺法阳性率有差异。PSAD<0.5 ng/mL²时,10点、13点穿刺阳性率无差异。结论 前列腺穿刺活检阳性率随穿刺针数增多而增加,可根据PSA水平、前列腺体积、PSAD选择个体化穿刺方案。

       无创正压通气的使用是患者发生鼻面部压力性损伤的重要原因之一，随着我国防控政策的放开，新增老年新冠感染患者急剧增加。文章对使用无创正压通气发生相关压力性损伤现状进行综述，介绍老年患者使用无创正压通气发生鼻面部压力性损伤的主要影响因素、评估方法以及预防措施现状，旨在为临床医务人员预防其相关压力性损伤提供参考。

       The use of non-invasive positive pressure ventilation is one of the important reasons for nasal and facial pressure injuries in patients．With the release of China's epidemic prevention policy，the number of new elderly patients with COVID-19 has increased dramatically．This paper summarizes the current situation of stress injuries caused by noninvasive positive pressure ventilation，introduces the main influencing factors，evaluation methods and prevention measures of nasal and facial stress injuries in elderly patients with noninvasive positive pressure ventilation，aiming to provide a reference for clinical medical personnel to prevent their related stress injuries．

       焦虑症是最常见的精神障碍，区别于生理性焦虑，患者常表现出持续的焦虑状态。越来越多证据表明，抑制性神经元参与生理性焦虑的产生和消退，而这类神经元功能异常与焦虑症的发生密切相关。小清蛋白（PV）神经元是一类主要的抑制性中间神经元，广泛分布于大脑皮质和其他脑区，并且具有独特形态和功能。PV神经元可通过快速放电活动精确控制局部微环路和大脑网络活动，进而调控焦虑发生。文章综述PV神经元如何介导生理性焦虑及其功能异常及如何导致焦虑症的产生，重点介绍了PV神经元的解剖和功能特性，这些特性使它们拥有快速和强力的抑制作用，能够快速调控神经网络活动，和PV神经元以及相关的神经环路调控焦虑发生的环路机制，以及PV神经元调控焦虑发生的分子机制，并展望未来的研究方向，以期为开发新的焦虑症干预策略提供科学依据。

       Anxiety disorders，distinct from physiological anxiety，are characterized by a chronic and pervasive state of heightened anxiety and represent the most common mental diseases．Emerging evidence implicates inhibitory neurons in both the generation and extinction of physiological anxiety，with dysfunction in these neurons strongly associated with the pathogenesis of anxiety disorders．Among inhibitory neurons，parvalbumin（PV）-positive interneuron，a key subset with unique morphological and functional characteristics，are widely distributed across the cerebral cortex and various brain regions．These neurons exert rapid，potent inhibitory control over local microcircuits and broader neural networks through their fast-spiking activity，making them integral to the regulation of anxiety-related behaviors．This review highlights three key aspects：the anatomical and functional properties of PV neurons；their role in circuit mechanisms；the molecular pathways by which PV neurons regulate anxiety．By elucidating the role of PV neurons in modulating physiological anxiety and highlighting their dysfunction in anxiety disorders，this review aims to inform future research and foster the development of novel therapeutic interventions for anxiety disorders．

       目的   分析重症烧伤患者血培养标本中检测出念珠菌的临床分布，探究重症烧伤患者血流念珠菌感染的病原学特征。方法   选取2012—2023年在广州市红十字会医院住院治疗的重症烧伤患者血培养标本1 148份，分析分离出念珠菌的非重复患者病死率、菌种分布、同时送检的其他类型标本念珠菌培养结果及患者念珠菌血流感染的检出时间与季节分布、抗菌药物使用情况及对常用抗真菌药物的耐药情况。结果  1 148份血培养标本中77份检出真菌，阳性率为6.71%。检出念珠菌感染的非重复患者27例，其中近平滑念珠菌13例，构成比为48.15%、白念珠菌8株，构成比为29.63%。血与静脉导管培养均检出念珠菌的有22例（81.48%）；血与伤口分泌物培养圴检出念珠菌的有10例（37.04%）；血、静脉导管、伤口分泌物培养圴检出念珠菌的有4例（14.81%）。静脉导管检出念珠菌高于其他类型标本。27例重症烧伤患者血流感染检出念珠菌的时间主要分布在入院后第2~3周、季节主要分布在春夏季。近平滑念珠菌、白念珠菌、热带念珠菌对氟康唑敏感率分别为83.33%、87.50%和75.00%。结论   重症烧伤患者血流近平滑念珠菌检出率最高，发生血流感染时间主要在春夏季及烧伤入院后第2~3周，静脉导管留置是增加重症烧伤患者念珠菌血流感染的因素。我院念珠菌对抗真菌药物具有较高敏感性。

      Objective  To retrospective analyze the clinical distribution of Candida species detected in blood cultures of patients with severe burns and to investigate the etiological characteristics of Candida bloodstream infections in these patients．Methods  A total of 1 148 blood culture specimens were collected from patients with severe burns hospitalized at an institution between 2012 and 2023．Patients data with Candida bloodstream infections isolated from 1 148 blood culture specimens were analyzed，including mortality rates，species distribution，Candida culture results from other simultaneously collected specimen types，and the timing and seasonal distribution of Candida bloodstream infections，the use of antibiotics and  resistance to commonly-used antifungal drugs．Results  A total of 1 148 blood culture samples，77 fungi were separated，resulting in a positive rate of 6.71%．Among the 27 patients with Candida infections，13 cases（48.15%）were caused by Candida parapsilosis and 8 cases（29.63%）by Candida albicans．Candida was isolated from both blood and intravenous catheter cultures in 22 cases，with a positivity  rate of 81.48%．Candida was isolated from both blood and wound secretion cultures in 10 cases（positivity rate of 37.04%），and 4 cases from blood，intravenous catheter and wound secretion cultures（positivity rate of 14.81%）．The detection rate of Candidafrom intravenous catheters was higher than that from other specimen types．Candida bloodstream infections were most commonly observed during the 2nd and 3rd week after admission，with a seasonal peak in spring and summer．The  susceptibility  rates of Candida parapsilosis、Candida albicans and Candida tropicalis to fluconazole were 83.33%、87.50% and 75.00%，respectively．Conclusions  The detection rate of Candida parapsilosis in bloodstream infections among patients with severe burns was the highest．These infections predominantly occur during the spring and summer and in the 2nd and 3rd week post-admission．The presence of intravenous catheters significantly contributes to Candida infections．The Candida in the hospital has high sensitivity to antifungal drugs．