目的 分析我院2011—2015年我院儿科住院患者下呼吸道病原菌分布及其耐药性。方法 采用全自动生化鉴定仪对痰标本分离株进行鉴定,用全自动微生物药敏系统和纸片扩散法对病原菌的耐药性进行检测,并用头孢硝噻吩纸片法对β-内酰胺酶进行检测。结果 2011—2015年共分离得到下呼吸道病原菌518株,包括肺炎链球菌(21.62%)、金黄色葡萄球菌(16.99%)、流感嗜血杆菌(14.48%)、肺炎克雷伯菌(11.97%)、大肠埃希菌(8.11%)、卡他莫拉菌(5.41%)、鲍曼不动杆菌(3.86%)和铜绿假单胞菌(3.86%)等。药敏结果显示,肺炎链球菌对克林霉素(90.18%)、红霉素(92.86%)和复方新诺明(87.50%)的耐药率较高,金黄色葡萄球菌则对青霉素G(90.91%)和红霉素(68.18%)有较强耐药性,未发现对万古霉素或利奈唑胺耐药的革兰阳性球菌。流感嗜血杆菌对氨苄西林耐药率为32%,与其β-内酰胺酶阳性率较一致,肺炎克雷伯菌和大肠埃希菌对头孢类药物(17.33%~45.33%)和喹诺酮类药物(34.67%~50.67%)耐药性较高,并发现1株碳青霉烯耐药的肺炎克雷伯菌。结论 本院下呼吸道感染病原菌谱较广,主要包括多种革兰阳性球菌和革兰阴性杆菌,并对多种抗菌药物表现出较强耐药性,临床应注重合理应用相关抗生素,严格防控病原菌的医院感染及传播。

Objective To analyze the antimicrobial resistance and the profile of pathogens from lower respiratory tract infections in pediatric in patients. Methods Sputum bacterial isolates were identified by an automated biochemical identification system. Antimicrobial resistance was detected by an automated drug susceptibility detection system and the disc diffusion method. The β-lactamases was tested by the nitrocefin disc detection method. Results Five hundred and eighteen bacterial pathogens were isolated from sputum samples during 2011-2015, including streptococcus pneumoniae(21.62%), staphylococcus aureus(16.99%), haemophillus influenzae(14.48%), klebsiella pneumoniae(11.97%), escherichia coli(8.11%), moraxelle catarrhalis(3.8%), acinetobacter baumanii(3.86%) and pseudomonas aeruginosa(3.86%). High resistant rates were detected for S. pneumoniae to clindamycin(90.18%), erythromycin(92.86%) and sulfamethoxazole (85.50%), while S. aureus was highly resistant to penicillin G(90.91%) and erythromycin(68.18%). Resistance to vancomycin and linezolid was not detected for gram positive cocci. The resistant rate to ampicillin was 32% for H. influenzae, which was in concordance with the production of β-lactamases. Relatively high resistance was detected for K. pneumoniae and E. coli to cephalosporins and quinolones. A carbapenem-resistant K. pneumoniae isolate was also detected. Conclusion Multiple bacterial species were isolated from lower respiratory tract infections in our hospital, including different species of gram positive cocci and gram negative bacilli, and these isolates exhibited high resistance to antibiotics tested. The clinical use of antibiotics and hospital infection and transmission of these pathogens should be controlled.

目的 观察并分析小儿肝门静脉海绵样变性者核因子-κB(NF-κB)活性在手术前后的变化。方法 以2005年2月—2013年7月我院收治的43例小儿肝门静脉海绵变性者为研究对象,以40例正常儿童为对照组,检测对照组以及观察组儿童在手术前后血清单个核细胞(PBMC)中的NF-κB p65/Lamin B1的相对含量和NF-κB活性。结果 观察组术前、术后PBMC中NF-κB p65的相对含量分别为(1269.3±349.8)ng/mg、(884.5±154.8)ng/mg,均高于正常对照组(106.1±12.7)ng/mg(P＜0.05);与术前相比,术后相对含量降低(P＜0.05);观察组术前、术后PBMC中NF-κB的活性分别为(2194.5±471.3)ng/mg、(1376.9±203.7)ng/mg,均高于正常对照组(221.1±33.6)ng/mg(P＜0.05);与术前相比,术后相对含量降低(P＜0.05)。结论 经手术治疗后,小儿肝门静脉海绵样变性者PBMC中NF-κB p65的相对含量、NF-κB的活性均显著降低,表明手术在一定程度上有效缓解了肝门静脉高压的病症。

目的 了解广州地区儿童患者分离的社区获得性耐甲氧西林金黄色葡萄球菌(CA-MRSA)临床分离株的分子特征。方法 收集2009年—2014年我院分离获得的65株CA-MRSA临床分离株,PCR法检测杀白细胞素(PVL)基因阳性菌株,多位点基因序列类型(MLST)测定MRSA菌株的序列类型,多重PCR法对MRSA菌株进行葡萄球菌mec盒式染色体(SCCmec)分型。结果 65株CA-MRSA分离株中PVL基因阳性31株,阳性率47.69%;MLST分型表明以ST5933.84%(22/65)及ST8823.07%(15/65)为主;SCCmec分型中发现3种类型,分别为SCCmecⅡ 32.30%(21/65)、SCCmecⅣ 49.23%(32/65)及SCCmecⅤ 18.46%(12/65),未存在未能分型菌株。结论 广州地区儿童患者分离的CA-MRSA临床分离株的PVL基因阳性率相对较高,SCCmecIV型、V型可形成小范围内的流行,其基因表型存在多种ST分型。

Objective To investigate the molecular characteristic of Community-acquired Methicillin-resistant Staphylococcus aureus(CA-MRSA) isolates from pediatric patients in Guangzhou. Methods 65 non-duplicate strains of Community-acquired Methicillin-susceptible Staphylococcus aureus(CA-MSSA) isolated from our hospital in 2009-2014 were investigated. Panton-valentine leukocidin(PVL) gene was detected by polymerase chain reaction(PCR). The sequence type (ST) of each strain was determined by muhilocus sequence typing (MLST). The genotypes of staphylococcal cassette chromosome mec(SCCmec) of the CA-MRSA isolates were confirmed by multiplex PCR. Results Among 65 isolates of CA-MRSA, the positive rate of PVL genes was 47.69%(31／65). The most common MLST type was ST59 (n=22, 33.84%), followed by ST88 (n=15, 23.07%). Three SCCmec types were found. The most common type was SCCmecIV (49.23%, 32/65), followed by SCCmecⅡ (32.30%, 21/65) and SCCmecV (8.46%, 12/65). Conclusion The PVL gene-positive rate of CA-MRSA isolates in our hospitals is at a relatively high level. SCCmec type IV and SCCmec type V could spread among hospitals and cause a small scale epidemic. Their phenotypes have a variety of ST types.

目的 研究比较低流量异氟烷与七氟烷麻醉在小儿腹腔镜手术中的麻醉效果。方法 选取在我院进行腹腔镜手术治疗的小儿患者120例作为研究对象,随机分为异氟烷和七氟烷两组,每组各60例,分别采用低流量异氟烷和七氟烷进行麻醉,比较两组患儿的相关麻醉参数,以及入睡、苏醒、拔管时间和不良反应情况。结果 两组患儿的不同时期脉搏氧饱和度、心率、呼气末二氧化碳浓度比较无差异(P＞0.05);七氟烷组患儿的不同时期的平均动脉压具有较强的稳定性,而异氟烷组患儿在诱导期间、手术过程中平均动脉压降低,差异有统计学意义(P＜0.05)。结论 在小儿腹腔镜手术过程,采用低流量七氟烷进行麻醉,可以使手术过程中血流动力学更加稳定,缩短术后拔管时间,减少术后不良反应发生,更易满足小儿腹腔镜手术的麻醉要求。

Objective To investigate efficacy between low flow isoflurane and sevoflurane in pediatric laparoscopic surgery. Methods 120 cases of children underwent laparoscopic surgery in our hospital were randomly divided into two groups. 60 patients in isoflurane group were given low-flow isoflurane anesthesia; 60 patients in sevoflurane group were given low-flow isoflurane anesthesia. Heart rate (HR), mean arterial blood pressure (MAP), pulse oxygen saturation (SpO₂), end-tidal partial pressure of carbon dioxide (EtCO₂) at different period, sleep and awakening time, extubation time, and adverse reactions of two groups were observed. Results Heart rate (HR), pulse oxygen saturation (SpO₂), end-tidal partial pressure of carbon dioxide (EtCO₂) of two groups at different period had no significantly difference (P>0.05). Mean arterial blood pressure (MAP) of two groups at different period had significantly difference (P<0.05). The sleep time and recovery time of two groups had no significant difference (P>0.05). The extubation time of sevoflurane was significantly lower than isoflurane group (P<0.05). The adverse reaction rate of sevoflurane was significantly lower than isoflurane group (P<0.05). Conclusion Low flow isoflurane and sevoflurane can be used in pediatric laparoscopic surgery, and the efficacy of sevoflurane is better.

       目的   探讨中医药治疗小儿腺样体肥大（AH）的研究现状、研究热点及趋势，为本领域研究者提供借鉴。方法   检索中国知网（CNKI）数据库从2005年1月1日至2024年1月31日中医药治疗小儿腺样体肥大的相关文献。运用Excel 2019分析其发文量，运用CiteSpace 6.2.R6软件分析其作者、机构、关键词。结果   共纳入文献395篇，年发文量整体呈现波动上升的趋势；发文量最多的作者为姜之炎；发文量最多的研究机构为山东中医药大学。初步形成了以姜之炎、俞景茂、阎兆君为核心的研究团队；研究机构以中医类院校及其附属医院为主。高频关键词提示当前研究热点前三位为中医药治疗方法、临床疗效。结论  AH领域研究内容主要以内治法、外治法、作用机制为主；研究热点逐渐从临床研究转向作用机制等实验研究；应用“数据挖掘”“网络药理学”等计算机技术研究AH会成为趋势。

       Objective  To explore the research status，research hotspots，and trends of traditional Chinese medicine in the treatment of adenoid hypertrophy in children，to provide a reference for researchers in this field．Methods  The relevant literature on the treatment of adenoid hypertrophy in children with traditional Chinese medicine was searched in the CNKI database from January 1，2005，to January 31，2024．Excel 2019 was applied to analyze the number of published papers，and CiteSpace 6.2.R6 software was applied to analyze its authors，institutions，and keywords．Results  A total of 395 papers were included，and the annual number of papers showed a fluctuating upward trend．The author with the largest number of papers was JIANG Zhiyan．Shandong University of Traditional Chinese Medicine was the research institution with the largest number of papers．The core  research teams including JIANG Zhiyan，YU Jingmao，and YAN Zhaojun were initially formed．The  research institutions were mainly Chinese medicine colleges and their affiliated hospitals．High-frequency keywords suggest that the current top three research hotspots were traditional Chinese medicine treatment methods，clinical efficacy．Conclusions  The research content in this field is mainly based on internal treatment，external treatment，and mechanism．The focus has gradually shifted from clinical research to experimental research such as mechanism．The application of computer technologies such as “data mining” and “network pharmacology” for this disease will become a trend．