目的 探讨本中心引起儿童泌尿系统感染的常见病原菌的分布以及耐药情况,为临床合理选用抗菌药物提供参考。方法 回顾性分析本医疗中心2012年1月—2013年12月2463例泌尿系统感染患儿中段尿标本培养及药敏检测结果。结果 2463例患儿中段尿标本共培养病原菌479株,阳性率为19.45%。其中革兰阴性杆菌309株(64.51%),革兰阳性球菌138株(28.81%),真菌32株(6.68%,主要为白假丝酵母菌)。分离率前7位的病原菌依次为大肠埃希菌(36.53%)、肺炎克雷伯菌(12.73%)、粪肠球菌(D群)(12.32%)、屎肠球菌(D群)(10.23%)、真菌(6.68%)、铜绿假单胞菌(5.22%)、奇异变形菌(3.13%),革兰氏阴性杆菌以大肠埃希菌和肺炎克雷伯菌为主,其中产超广谱β‐内酰胺酶菌株125株,比例高达71.42%;革兰阳性球菌以肠球菌(D群)为主,金黄色葡萄球菌检出率为2.30%,其中耐甲氧西林株占27.27%。结论 大肠埃希菌仍为儿童泌尿系统感染的主要病原菌,且存在多重耐药菌感染情况,革兰氏阳性球菌有增多的趋势;明确病原菌种类及药敏结果,对临床合理应用抗菌药物治疗儿童泌尿系统感染有重要意义。

Objective To research the distribution of common pathogenic bacteria and drug resistance of urinary tract infection in the hospital for providing reference of antimicrobial drugs for clinical reference. Methods Pathogenic bacteria isolated from the germiculture positive specimens of midstream urine and the antimicrobial susceptibility test results from Jan 2012 to Dec 2013 in our hospital were retrospective summarized. Results 479 strains pathogenic bacteria were isolated from 2463 urine samples totally. The positive rate was 17.3％, with 309 strains of gram-negative bacilli (64.51％),138 strains of gram-positive coccus(28.81％),32 strains of fungi(6.68％).The top 7 isolation of pathogens were strains of escherichia coli(36.53％),strains of klebsiella pneumoniae(12.73％),strains of enterococcus faecalis D group(12.32％),strains of enterococcus faecium D group(10.23％),strains of fungi(6.68％),strains of pseudomonas aeruginosa(5.22％),strains of staphylococcus epidermidis(3.13％).125 strains of klebsiella pneumoniae produced ESBL were detected out with the rates of up to 71.42%. The strains of gram-negative bacteria were based on enterococcus faecalis (D group),yet staphylococcus aureus methicillin resistant strains accounted for 27.27%. Conclusion Escherichia coli is the main pathogenic bacteria of child urinary tract infection and the multidrug resistance of the pathogenic bacteria is in a very serious situation. And gram-positive cocci is going to be increasing. It is necessary to make clear pathogens and drug sensitivity results, which is important to guide clinic make use of antibacterial agents exactly to cure infection of urinary system in children.

目的 调查重症监护病房(ICU)医院感染的常见细菌分布及耐药性变化,为合理使用抗生素和医院感染的预防控制提供相关科学依据。方法 回顾性分析医院2007—2011年ICU收治的381医院感染患者感染菌株分布特点及耐药性情况。结果 ICU医院感染常见菌株主要来源于痰液标本,占78.2%,其次是血液。381 株临床分离菌中共检出革兰阴性杆菌262 株、革兰氏阳性球菌70例和真菌49例,分别占68. 8%、24.9%和占17.4%。革兰阴性杆菌中鲍氏不动杆菌(24.7%)、肺炎克雷伯氏杆菌(10.8%)、铜绿假单胞菌(9.2%)排前三位。其中除碳青霉烯类药物及抑酶制剂,鲍氏不动杆菌对其余抗菌药物耐药率均＞40%。革兰氏阳性球菌以金黄色葡萄球菌为主。对青霉素、庆大霉素、红霉素的耐药率均＞50%。结论 呼吸道仍是ICU最常见的感染部位。病原菌以革兰阴性杆菌为主,且对常用抗菌药物的耐药率逐渐升高,临床应加强抗菌药物规范使用,避免耐药菌株的产生。

Objective To investigate the distribution and drug resistance of pathogens in intensive care unit(ICU)causing nosocomial infections so as to provide scientific basis for antibiotic adoption and the prevention and control of nosocomial infections. Methods The specimen sources and the clinical distribution of the 381 pathogens isolated from 2007 to 2011 were retrospectively analyzed. The drug resistance was observed in ICU that causing nosocomial infections. Results The sputum was the major specimens source in ICU, accounting for 78.2%. Of the 381 pathogens causing nosocomial infections in ICU, the 262 gram-negative bacilli (68.8%), 70 gram-positive cocci (24.9%),and 49 fungi (17.4) were isolated, Among gram-negative bacilli the top three were acinetobacter baumannii (24.7%), klebsiella pneumonia(10.8%),and pseudomonas aeruginosa (9.2%). The drug resisitance rate of baumannii to antibiotics were more than 40%,beside carbapenem and B-Lactamaseinhibitors. The main gram-positive cocci of causing nosocomial infections was saphylococcus aureus in ICU. The drug resisitance rate of S. aureus to penicillin, erythromycin and gentamicin were higher than 50.0%. Conclusion The main distribution area of nosocomial infections was the respiratory tract and the gram-negative bacilli were the common pathogens in ICU. It was benefit to avoid presenting of drug resistant strain, and antibiotics should be reasonably used in clinic.

目的 探讨2型糖尿病患者发生医院感染危险因素。方法 收集2010年1月—2015年1月我院收治890例2型糖尿病患者临床资料行回顾性分析,根据是否发生医院感染分为感染组(75例)和非感染组(815例),对两组患者相关因素进行分析。结果 2型糖尿病医院感染发生率为8.43%,好发于呼吸系统感染。年龄、病程、住院时间、血糖控制差、侵袭性操作、合并并发症、合并基础疾病为2型糖尿病患者发生感染的危险因素。结论 2型糖尿病患者发生医院感染危险因素较多,临床针对高危患者应重点进行预防,降低感染率,提高患者治疗效果。

目的 了解近5年来阴沟肠杆菌在我院的临床分布及耐药性的变迁情况。方法 采用K-B纸片法进行药物敏感性测定,再用双纸片法检测超广普β-内酰胺酶(ESBLs)。结果 2010年1月—2014年12月我院共分离阴沟肠杆菌261株,其中2010年分离48株(18.4%)、2011年50株(19.2%)、2012年52株(19.9%)、2013年54株(20.7%)、2014年57株(21.2株%);主要分布于重症监护室(ICU)、呼吸内科、肝胆外科,分别占49.%(130株)、14.9%(39株)、11.9%(31株),标本来源主要为痰液、尿液及伤口分泌物,分别占52%、13.5%、12.8%,ESBLs菌株的检出率为29.9%(78株),产酶株的耐药性高于非产酶株,全部菌株对亚胺培南敏感。结论 阴沟肠杆菌主要引起呼吸道、尿路和各种伤口感染,多发于ICU患者,并且呈逐年增多趋势,产ESBLs在阴沟肠杆菌中广为流行,合理使用抗菌药物(尤其是第三代头孢菌素)是减少产ESBLs株流行的重要措施。

Objective To investigate the clinical distribution and antimicrobial resistance of infections caused by enterobacter cloacae in our hospital. Methods Antimicrobial susceptibility tests were done by Kirby-Bauer disk diffusion method. The extended-spectrum β-Lactamases (ESLBS) were detected by double disc diffusion test. Results A total of 261 strains of E cloacae were isolated from Jan 2010 to Dec 2014. The percentages of these strains isolated in 2010, 2011, 2012, 2013, 2014 were 18.4%, 19.2%, 19.9%, 20.7%, 21.2% respectively. E cloacae were mainly isolated from intensive care unit (ICU) (49.0%), respiratory medicine (14.9%) and surgery (11.9%) respectively. The percentages of these strains isolated from sputum, urine and wound secretion were 52.0% 13.5% and 12.8% respectively. The percentages of ESBLS producer was 29.9% (78 strains).Their resistance was obviously higher than that of non-ESBLS producer. But all strain were sensitive to imipenem. Conclusion E Cloacae caused infections of respiratory tract, urinary and wound principally in clinic. The most of which occured in ICU. The ESBLS are popular in E cloacae and show the increasing trend year by year. The restricted use of antimicrobial drug is a considerable measure which reduces prevalence of ESBLS producing strains.

       目的   探讨支气管镜灌洗用于儿童重症肺部感染合并肺实变的治疗效果及对CT特征、肺功能的影响。方法   选取2022年5月—2024年5月铜仁市人民医院收治的100例重症肺部感染合并肺实变患儿开展前瞻性研究，应用随机数表法分为对照组和观察组，每组各50例。对照组患儿采取常规治疗，观察组则采取常规治疗加支气管镜灌洗治疗。对比其临床疗效，治疗前后炎症因子、CT特征及肺功能变化。结果   观察组治疗总有效率高于对照组（P＜0.05）；治疗后观察组患儿白细胞计数（10.36±2.52）×10⁹ /L、白细胞介素-6（20.57±5.05）ng/L、C反应蛋白（13.12±2.64）mg/L、降钙素原（101.62±12.16）pg/L均低于对照组白细胞计数（13.25±3.32）×10⁹ /L、白细胞介素-6（31.69±4.11）ng/L、C反应蛋白（16.16±4.44）mg/L、降钙素原（113.46±18.11）pg/L（P＜0.05）；治疗后两组患儿胸腔积液、支气管壁增厚、空气支气管征、肺部实变、磨玻璃影等相关CT影像特征占比下降，且观察组低于对照组（P＜0.05）；治疗后两组患儿呼气流量峰值水平均升高，观察组（90.67±18.45）L/s高于对照组（81.27±17.69）L/s，用力肺活量水平均更高，观察组（3.33±0.68）L高于对照组（2.68±0.25）L（P＜0.05）。结论   针对儿童重症肺部感染合并肺实变，在常规治疗基础上增加支气管镜灌洗可提升临床疗效，减轻机体炎症反应，改善胸部CT各种表现及肺功能。

        Objective  To explore the therapeutic effects of bronchoalveolar lavage in children with  severe pulmonary infection complicated by lung consolidation and its impact on CT features and pulmonary function．Methods A prospective study was conducted on 100 children with severe pulmonary infection complicated with pulmonary consolidation in a hospital from May 2022 to May 2024．They were randomly divided into observation group and control group using a random number table method，50 cases in each group．The control group of children received routine treatment，and the observation group received conventional treatment plus bronchoalvelar lavage．Clinical efficacy，inflammatory factors，CT features，and alterations in pulmonary function before and after therapy were compared．Results  The total effective rate of the observation group was higher than that of the control group（P＜0.05）．After treatment，the white blood cell count（10.36±2.52）×10⁹ /L，interleukin-6（20.57±5.05）ng/L，C-reactive protein（13.12±2.64）mg/L，and procalcitonin（101.62±12.16）pg/L in the observation group were all lower than those in the control group（13.25±3.32）×10⁹ /L，interleukin-6（31.69±4.11）ng/L，C-reactive protein（16.16±4.44）mg/L，and procalcitonin（113.46±18.11）pg/L（P＜0.05）．After treatment，the proportion of CT imaging features such as pleural effusion，bronchial wall thickening，air bronchogram sign，lung consolidation，ground glass opacities，decreased in both groups of children，and the observation group was lower than the control group（P＜0.05）．After treatment，the peak levels of expiratory flow in both groups of children increased，with the observation group（90.67±18.45）L/s higher than the control group（81.27±17.69）L/s．The forced vital capacity levels were also higher，with the observation group（3.33±0.68）L higher than the control group（2.68±0.25）L（P＜0.05）．Conclusions  Adding bronchoalvelar lavage to routine treatment for children with severe pulmonary infection complicated with pulmonary consolidation can improve their clinical efficacy，alleviate inflammatory reactions，and improve various chest CT manifestations and lung function．

       戊型肝炎病毒（HEV）是导致急性肝炎的重要病原体，部分HEV感染者可进展为肝衰竭，此外，慢性感染和肝外表现可也在HEV感染者中发生。全球每年感染HEV的患者数达2000万，其中330万例患者有肝炎相关的临床症状，年死亡例数约为4.4万（2015年数据）。在我国，HEV以散发流行为主。近年来由于对其研究的重视，HEV病原学、流行病学、临床诊疗和预防取得较大的进展，文章拟对目前HEV防治热点以及新进展进行总结和分析。

       Hepatitis E virus（HEV）is an important pathogen that causes acute hepatitis．Some HEV-infected individuals 

may progress to liver failure．In addition，chronic infection（including liver fibrosis and cirrhosis）and extrahepatic manifestations can also occur in HEV infection．Worldwide，there are 20 million cases of HEV infection each year，with  3.3 million cases presenting clinical symptoms related to hepatitis，and an annual death toll of approximately 44，000（data from 2015）．In China，HEV mainly present as sporadic outbreaks．In recent years，there has been significant progress in the pathogenesis，epidemiology，clinical diagnosis and treatment，and prevention of HEV．This review aims to summarize and analyze the current hotspots and new developments in the prevention and treatment of HEV．

       目的   探讨碳酸氢钠林格液联合乳酸靶向复苏对感染性休克患者的应用效果。方法   选取中国人民解放军联勤保障部队第九八八医院2019年1月—2023年12月收治的80例感染性休克患者，应用随机数字表法将其分为观察组与对照组，均为40例。对照组患者采用复方氯化钠溶液进行液体复苏，观察组患者采用碳酸氢钠林格液联合乳酸靶向复苏。对比两组患者复苏前与复苏后24 h的静脉血氧饱和度（SvO₂）、平均动脉压（MAP）、心脏指数（CI）、心率（HR）等相关生命体征变化，血乳酸、pH值、血钠（Na⁺ ）、血氯（Cl^- ）、碳酸氢根离子（HCO₃^-）水平变化，对比两组患者症状体征消失时间、意识恢复时间、机械通气时间、ICU住院时间、总住院时间及预后不良情况与并发症发生率。结果   复苏后两组SvO₂、MAP、CI均升高，且观察组的SvO₂为（73.62±6.24）%，MAP为（75.26±11.42）mmHg，CI为（3.62±0.66）min/m² ，均高于对照组的（66.85±8.32）%、（68.51±8.37）mmHg 和（3.16±0.35）min/m² ，而HR均降低，其中观察组为（113.26±12.37）次/分，低于对照组的（122.62±12.73）次/分，比较差异有统计学意义（t=4.117，P＜0.001；t=3.015，P=0.003；t=3.894，P＜0.001；t=3.335，P＜0.001）。复苏后两组血乳酸、Cl^- 均降低，pH值、Na⁺ 、HCO₃^-均升高，观察组血乳酸为（1.46±0.52）mmol/L，低于对照组的（2.25±0.32）mmol/L，比较差异有统计学意义（t=8.183，P＜0.001），但两组pH值、Na⁺ 、Cl^- 、HCO₃^-水平对比差异无统计学意义（P＞0.05）。观察组症状体征消失时间为（2.34±0.58）d、意识恢复时间为（1.15±0.27）d、机械通气时间为（5.82±1.08）d、ICU住院时间为（11.85±2.28）d、总住院时间为（23.15±4.26）d，均低于对照组的（3.54±0.72）（2.95±0.34）（10.35±2.12）（15.12±3.23）（27.24±6.37）d，比较差异有统计学意义（t=8.209，P＜0.001；t=26.221，P＜0.001；t=12.042，P＜0.001；t=5.231，P＜0.001；t=3.376，P＜0.001）。观察组多器官功能障碍综合征、肺水肿、脑水肿、再次休克、死亡等不良预后发生率低于对照组（7.50% vs 32.50%；χ ² =7.810，P=0.005）。结论   碳酸氢钠林格液联合乳酸靶向复苏可稳定感染性休克患者生命体征，降低乳酸水平，改善患者预后，缩短住院时间，且能够辅助降低患者不良预后发生率。

       Objective  To explore the application effect of sodium bicarbonate Ringer’s solution combined with lactate targeted resuscitation on patients with septic shock．Methods  A total of  80  patients with  septic  shock admitted to the  988 Hospital，Joint Logistic Support Force of the Chinese People’s Liberation Army from January 2019 to December 2023 were selected and divided into observation group and control group by random number table method，with 40 cases in both groups．The control group was treated with compound sodium chloride solution for liquid resuscitation，and the observation group was treated with sodium bicarbonate Ringer’s solution combined with lactic acid for targeted resuscitation．The changes in SvO₂，MAP，CI，HR，as well as changes in blood lactate，pH，Na⁺ ，Cl^- ，and HCO₃^- levels were compared between two groups of patients before and 24 hours after resuscitation．The time for symptom disappearance，consciousness recovery，mechanical ventilation，and ICU hospitalization were compared between the two groups of patients，as well as total length of hospital stay，poor prognosis，and incidence of complications．Results  That the SvO₂，MAP，and CI were elevated in both groups after resuscitation，and of the observation group （SvO₂［73.62±6.24］%，MAP［75.26±11.42］mmHg，CI［3.62±0.66］min/m² ）was  higher than that of the control group （［66.85±8.32］%，［68.51±8.37］mmHg，［3.16±0.35］min/m² ），the HR was decreased in all cases，the observation group（113.26±12.37）times/min was lower than the control group（122.62±12.73）times/min，the difference was statistically significant（t=4.117，P＜0.001；t=3.015，P=0.003；t=3.894，P＜0.001；t=3.335，P＜0.001）．After resuscitation，both groups blood lactate and Cl^-  were decased，pH value，Na⁺ ，and HCO₃^- increased，and the observation group blood lactate（1.46±0.52）mmol/L was lower than the control group（2.25±0.32）mmol/L，the difference was statistically significant（t=8.183，P＜0.001）．But the comparison of pH value，Na⁺ ，Cl^- ，and HCO₃^- levels between the two groups was not different（P＞0.05）．Time of disappearance（2.34±0.58）d，time of consciousness（1.15±0.27）d，time of mechanical ventilation（5.82±1.08）d，length of ICU stay（11.85±2.28）d and total length of stay（［23.15±4.26］d，［3.54±0.72］d，［2.95±0.34］d，［10.35±2.12］d，［15.12±3.23］d，［27.24±6.37］d），the difference was statistically significant（t=8.209，P＜0.001，t=26.221，P＜0.001，t=12.042，P＜0.001；t=5.231，P＜0.001；t=3.376，P＜0.001）．The incidence of multiple organ dysfunction syndrome，pulmonary edema，cerebral edema，reshock，and death in the observation group was significantly lower than that in the control group（7.50% vs 32.50%；χ ² =7.810，P=0.005，P＜0.05）．Conclusions  The combination of sodium bicarbonate Ringer’s solution and lactate targeted  resuscitation can improve the vital signs of septic shock patients，reduce lactate levels，significantly improve patient prognosis，shorten hospital stay，and assist in reducing the incidence of complications and mortality．