目的 分析献血者乙型肝炎病毒(HBV)核酸检测非重复反应性确认及追踪结果。方法 对1 200例于我站无偿献血者的血液样本进行非重复反应性确认,补充乙肝“两对半”检测,并对其部分单项核酸检测反应的患者予以回访结果追踪。结果 1 200份无偿献血血液样本单项核酸检测有反应性者150份(12.50%)。150份单项核酸检测有反应性样本经重新病毒核酸检测后,仍有58例样本有反应性(38.67%)、92例样本为非反应性(61.33%)。其中有18例献血者实际召回抽血,完成两次追踪,第一次追踪60~125天,第二次追踪间隔天数在160~356天,第一次追踪HBV DNA有反应(+)8例,第二次追踪仍存在反应(+);7例HBV DNA有反应者存在抗-HBc阳性(+)。核酸反应检测HBV-DNA阳性值10~17有37.25%,高于核酸反应检测值<10的4.17%(P<0.05)。结论 部分单项核酸检测反应无偿献血者存在一定的输血传播HBV风险,多为HBV隐匿性感染,此时需要重视其输血情况,屏蔽单项核酸反应性献血者。

Objective To analyze the results of nonrepetitive reactivity of HBV nucleic acid detection in blood donors. Methods 1 200 blood samples from our station were confirmed by nonrepetitive reaction, supplemented with the “two to half” test of hepatitis B, and some patients with single nucleic acid detection were followed up. Results One hundred and fifty samples (12.50%) were reactive in single nucleic acid detection in 1 200 blood samples. After the virus nucleic acid detection, 58 samples were reactive (38.67%), 92 were nonreactive (61.33%). 18 donors were actually recalled and drew blood, completed two tracking. The first tracking time was 60-125 days, the second time interval was 160-356 days. In the first tracking 8 cases had HBV DNA reaction (+) , which still had reaction in the second tracking; 7 HBV DNA positive donors had HBC antibody (+).The proportion of HBV-DNA positive with 10-17 value in mucleic acid reaction test(37.25%) was higher than that with value below 10(4.17%,P＜0.05). Conclusion Some donors with single nucleic acid detection reaction have a certain risk of transmission of HBV, most of them had hidden infection of HBV. At this time, we should pay attention to the blood transfusion and avoid the single nucleic acid reactive donors.

目的 探讨口腔综合修复技术应用于牙隐裂中的临床疗效,为牙隐裂的治疗路径提供参考依据。方法 我院所接收的牙隐裂患者为试验样本,共52例,选入期间为2019年1月—2020年12月,将其予以随机分组,其中对照组(n=26例)和观察组(n=26例),对照组施以常规治疗,观察组施以口腔综合修复技术治疗,评测各组的临床疗效、SF-36评分、咀嚼功能评分以及临床症状消退时间。结果 观察组总有效率为96.15%,低于对照组76.92%(P＜0.05);观察组干预后的疼痛程度评分低于对照组(P＜0.05);观察组牙面裂纹消退时间、冷热刺激消退时间、 咀嚼疼痛消退时间均低于对照组(P＜0.05)。结论 通过口腔综合修复技术治疗牙隐裂患者,可取得确切疗效,有助于缓解临床症状。

Objective To investigate the clinical effect of comprehensive prosthodontics in the treatment of cracked teeth, and to provide reference for the treatment of cracked teeth. Methods Fifth-two patients with cracked teeth in our hospital from January 2019 to December 2020 were randomly divided into control group (n=26) and observation group (n=26). The control group was treated with conventional treatment, and the observation group was treated with oral comprehensive repair technology. The clinical efficacy, SF-36 score, masticatory function score and the time for symptoms to subside of each group were evaluated. Results The total effective rate of the observation group was 96.15%, which was lower than 76.92% of control group(P<0.05); the pain score of the observation group after the intervention was lower than that of the control group (P<0.05); the tooth surface crack regression time, hot and cold stimulation regression time, masticatory pain regression time of the observation group were shorter than those of the control group (P<0.05). Conclusion Comprehensive prosthodontics treatment for cracked teeth can obtain exact curative effect and help to relieve clinical symptoms.

目的 探讨维持性血液透析患者症状负担的现状,并分析影响因素。方法 采用一般状况调查表、血液透析患者症状评估量表、慢性病自我效能量表对96名维持性血液透析患者进行调查。结果 维持性血液透析患者症状负担总得分为63.76±46.70,平均每位患者经历14.10±7.91个症状;其中自我效能、原发病、是否进行日常运动、碱性磷酸酶、血清钠是独立影响因素(P＜0.05)。结论 根据影响因素采取针对性的干预措施,有望缓解患者的症状负担。

Objective To explore the symptom burden and evaluate the risk factors in maintenance hemodialysis patients.Methods A total of 96 patients were retrospectively investigated by Karnofsky Performance Status, dialysis symptom index and chronic disease self-efficacy scale.Results The total score of symptom burden in patients was 63.76±46.70. The average experienced symptoms were 14.10±7.91 per patient. The result by multiple regression analysis indicated that self-efficacy, the primary disease, daily exercises, the level of alkaline phosphatase and sodium in serum were independent risk factors for symptom burden in patients.Conclusion Tailored treatments based on risk factors for hemodialysis patients may relieve their symptom burden.

目的 探讨35周岁以下患者行D5单囊胚移植的可行性。方法 回顾性分析2016年1月—2019年7月期间,女方年龄≤35岁,在本中心行新鲜周期全胚冻后第一冻融移植的663个周期,根据胚胎发育天数及囊胚移植数目分为三组:D3双优胚移植组(D3双优组:n=508)、D5单囊胚移植组(D5单囊组:n=47)、D5双囊胚移植组(D5双囊组:n=108),对三组的临床结局进行比较分析。结果 D5双囊组临床妊娠率高于D3双优组及D5单囊组,且差异有统计学意义(P＜0.05),但D5单囊组与D3双优组相比,无统计学差异(P＞0.05);D5单囊胚的多胎率低于D5双囊组及D3双优组,差异均有统计学意义(P＜0.001),D3双优组的多胎率也低于D5双囊组,差异亦有统计学意义(P＜0.05);D5单囊组和D5双囊组的种植率都高于D3双优组,差异都有统计学意义(分别是P＜0.05,P＜0.001),而D5单囊组合D5双囊组之间无统计学差异(P＞0.05);但三组之间的早期流产率及宫外孕率均无统计学差异(P＞0.05)。结论 年龄≤35周岁的患者全胚冷冻后第一冻融移植周期选择D5单囊胚进行移植,既能获得良好的临床妊娠率和种植率,又极大降低多胎妊娠率。

Objective To investigate the clinical outcomes of the single blastocyst transfer of day 5 in the women under 35 years old. Methods A retrospective study was conducted to analyze clinical outcomes of women less than 35 years old and experienced embryo transfer in the first frozen-thawed cycles from January 2016 to July 2019 in the Center of Reproductive Medicine of Guangzhou Women and Children's Medical Center. According to the embryo developmental days and transfer blastocyst numbers, all patients were divided into three groups: double high-quality cleavage embryo transfer of day 3 (n=508), single blastocyst transfer of day 5(n=47), double blastocyst transfer of day 5(n=108). The clinical outcomes were compared. Results The clinical pregnancy rate of the double blastocyst transfer of day 5 was higher than the other two groups,and the differences were statistically significant(P＜0.05). However, there was no statistical difference between the single blastocyst transfer of day 5 and the double high-quality cleavage embryo transfer of day 3(P＞0.05). The multiple pregnancy rate of the single blastocyst transfer of day 5 was lower than the other two groups, and the differences were statistically significant (P＜0.001),and that of the double high-quality cleavage embryo transfer of day 3 was even lower than that of the double blastocyst transfer of day 5,and the difference was statistically significant(P＜0.05). The implanting rate of the double high-quality cleavage embryo transfer of day 3 was lower than the other two groups, and the differences were statistically significant (P＜0.05;P＜0.001),but there was no statistical difference between the single blastocyst transfer of day 5 and the double blastocyst transfer of day 5 (P＞0.05). However, the early miscarriage rate and the ectopic pregnancy rate did not exhibit statistical differences (P＞0.05). Conclusion Single blastocyst transfer of day 5 can ensure clinical pregnancy rate and implantation rate while effectively reducing multiple pregnancy in the women undergoing the first frozen-thawed cycles of under 35 years old.

目的 分析院际转运紫绀型先天性心脏病患儿中的流行病学特征,评价院际转运在患儿救治过程中的作用及效果。方法 回顾性分析2016年1月—2019年12月我院院际转运的145例紫绀型先天性心脏病患儿的性别、年龄、体质量、生命体征、转运期间检测指标、支持治疗等资料。结果 145例紫绀型先天性心脏病男105例,女40例,73.1%(106/145)的转诊患儿是新生儿,59.3%(86/145)的转诊患儿来自三级医院,55.9%(81/145)的转诊患儿转诊距离在200 km以上,仅有10.3%(15/145)的转诊患儿转诊距离在50 km以内。转诊过程中44.1%(64/145)的患儿给予呼吸机辅助通气,33.1%(48/145)的患儿给予吸氧处理,仅22.1%(32/145)的患儿无需呼吸支持,所有患儿安全转运到接诊医院,入院后138例接受外科手术治疗手术康复,7例放弃治疗。结论 安全、有效的院际转运紫绀型先天性心脏病是救治的关键环节,为紫绀型先天性心脏病的救治提供前提。

Objective To analyzed the epidemiological characteristics of interhospital transport of cyanotic congenital heart disease in children and evaluate the effect of interhospital transport on treatment. Methods 145 children with cyanotic congenital heart disease from January 2016 to December 2019 transported in our hospital were analyzed retrospectively. Epidemiological data such as sex, age, weight, vital signs, detection indexes during transport and supportive treatment were collected. Results Among 145 children with cyanotic type of congenital heart disease there were 105 male, 40 female. 73.1% (106/145) children were newborn, 59.3% (86/145) children were from tertiary hospitals, 55.9% (81/145) children were transported over 200 km, only 10.3% (15/145) children were within 50 km. 44.1% (64/145) were given assisted ventilation during transporting, 33.1% (48/145) children were given oxygen treatment, only 22.1% (32/145) of the children did not need respiratory support. All children were transferred to the receiving hospital successfully. After admission, 138 of them received surgical treatment successfully, and 7 of them gave up treatment. Conclusion Safe and effective interhospital transport is the key to treating cyanotic congenital heart disease, which provides the basis for the treatment of cyanotic congenital heart disease.

目的 分析芳香化酶(CYP19)基因多态性与子宫内膜异位症(endometriosis,EMs)术后复发的关系。方法 回顾性分析2019年2月—2020年2月于我院接受手术的110例EMs患者临床资料,按照术后12个月是否复发分为未复发组(62例)、复发组(48例),通过聚合酶链反应-限制性片段长度多态性(PCR-RFLP)技术测定两组CYP19基因115T/C、240A/G、1531C/T位点的单核苷酸多态性(single nucletide polymorphism,SNP),并分析不同位点对应VAS评分、r-AFS评分的差异。结果 复发组CYP19基因115T/C、1531C/T位点不同基因型及等位基因频率与未复发组相比,差异均无统计学意义(P＞0.05);复发组CYP19基因240A/G位点AG基因型频率比未复发组高(P＜0.05),AA基因型频率比未复发组低(P＜0.05);两组240A/G位点等位基因频率相比,差异有统计学意义(P＜0.05);CYP19基因240A/G位点AG 型VAS评分、r-AFS评分＞GG型＞AA型,差异有统计学意义(P＜0.05);CYP19基因115T/C、1531C/T位点不同基因型的VAS评分、r-AFS评分相比,差异均无统计学意义(P＞0.05)。结论 CYP19基因240A/G位点多态性与EMs术后复发、疼痛程度及病情密切相关,且携带G等位基因的基因型(AG+GG)可能是术后复发的风险因素。

Objective To analyze the relationship between aromatase (CYP19) gene polymorphism and recurrence of endometriosis (EMs) after surgery. Methods The clinical data of 110 patients with EMs who underwent the operation in our hospital from February 2019 to February 2020 were analyzed retrospectively. The patients were divided into non-relapsing group (62 cases) and relapsing group (48 cases) by 12 months followed-up outcomes. The single nucleotide polymorphism (SNP) of 115T/C, 240A/G and 1531C/T sites of CYP19 gene were detected by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP), and the differences of VAS and r-AFS scores between the two groups were analyzed. Results The genotypes and allele frequencies of 115T/C and 1531C/T of CYP19 gene in relapsing group were not significantly different from those in non-relapsing group (P>0.05). The AG genotype frequency of 240A/G site of CYP19 gene in relapsing group was higher than that in non-relapsing group (P<0.05), while the AA genotype frequency was significantly lower than that in non-relapsing group (P<0.05). There were significant differences in the allele frequencies of 240A/G site (P<0.05). The scores of VAS and r-AFS of AG＞GG＞AA, with significant differences (P<0.05). There were no significant differences in the VAS and r-AFS scores of CYP19 gene at 115T/C and 1531C/T site (P>0.05). Conclusion The 240A/G polymorphism of the CYP19 gene is closely related to postoperative recurrence, pain degree and condition of EMs, and the genotypes carrying the G allele (AG+GG) may be the risk factor of postoperative recurrence.

目的 探讨Sysmex-2100全自动血液分析仪检测β-地中海贫血(β-地贫)患儿血小板参数显示不全的原因。方法 收集2017年4月—2020年4月期间本院确诊β-地贫患儿301人,其中重型病例204例,非重型97例。对301例患儿均采用希森美康Sysmex-2100血细胞分析仪进行血细胞分析,标本制作血涂片充分干燥后经瑞氏-吉姆萨染色,由主管技师及以上检验人员进行人工镜检。结果 301例β-地贫患儿血细胞分析结果出现血小板参数不显示者102例,占33.89％;其中有小红细胞、红细胞碎片、血小板聚集97例(95.10％);血小板直方图异常93例(91.18％)。重型β-地贫患儿血小板参数显示不全者75例,非重型β-地贫患儿血小板参数显示不全者27例,两组间血小板参数显示不全比例差异无统计学意义(P= 0.126)。血小板参数全显示病例的平均红细胞体积高于血小板参数显示不全病例,差异有统计学意义(P< 0.0001)。结论 小细胞低色素性红细胞及红细胞碎片化是β-地贫患儿血小板参数显示不全的主要原因,通过血小板直方图正常与否可大致判断血小板参数的可信度,采用PLT-O通道检测及涂片镜检查找原因,可提高结果的准确性。

目的 本文通过对越秀区2016—2020年学生肺结核流行特征和筛查情况分析,为学校制定针对性防控措施提供参考依据,最大限度地做好学校结核病防控工作。方法 在“国家结核病管理信息系统”专网中,导出2016—2020年常住在越秀区的学生肺结核患者的病案信息到EXCLE表,进行逻辑核对和补漏;将患者每次所做的密切接触者筛查资料统一并录入到一个EXCLE汇总表,将信息表转换成FoxPro 6.0数据库进行统计,分析本地居住学生肺结核登记发病率、新发与复发构成比,人群分布特征、发现方式、就诊和确诊延误、耐药情况、密切接触者筛查情况。结果 共登记学生肺结核191例,登记发病率为3.25/10万,不同年份登记发病率未见统计学差异(χ²=7.84. P=0.097 3),但学生患者占比从2016年的2.52%上升到2020年的7.74%,上升了3.07倍。学生患者均为新发,男女性别比为1.27:1,以15～24岁年龄段的高中生和大学生构成为主,分别占45.55%和39.79%,两者合计85.34%。发现方式主要以转诊、追踪到位和因症到结防机构直接就诊为主,分别为44.50%、25.13%、23.56%,其中转诊比例最高,占了44.50％;各年的发现方式构成比差异未见统计学意义(χ²=12.057,P=0.441 1)。共登记涂阳患者45例,就诊延误10例,延误率22.22%,确诊延误2例,延误率4.44%;共登记涂阴患者146例,就诊延误29例,延误率19.86%,确诊延误3例,延误率2.05%。共登记培养阳性(涂阳培阳45例,涂阴培阳6例),对一线抗结核药物(HRZES)全敏感42例,全敏感率82.35%;单耐药9例,耐药率17.65%,其中单耐药率最高的为异烟肼和链霉素,不同年份的全敏感率未见统计学差异(χ²=3.81 P=0.432)。需开展筛查的学生肺结核患者178例,已开展筛查的患者169例,筛查率94.94%。需筛查的密切接触者7954例,实际接受筛查(开展了PPD或胸片筛查1项或以上)者7 898例,筛查率99.30%,发现活动性肺结核13例,检出率0.16%。密切接触者筛查方式:胸片筛查6 317人,发现胸片异常42人,异常率0.66%;PPD筛查7 897人,强阳性493人,强阳性率6.24%;症状筛查7 897人,自诉有症状64人,症状阳性率0.81%。结论 2016—2020年,广州市越秀区学生肺结核疫情较轻,患者以高中和大学生首次发病为主,男女差别不大,但就诊延误和确诊延误仍较普遍。其次,对学生患者及其密切接触者的筛查工作做得较好,及时发现了较多现症患者及近期感染者。因此,继续加强高中以上学校的结核病防治知识宣传工作和做好应筛必筛工作,是今后学校疫情控制的侧重点。

目的 探讨血培养分离菌的分布特点及耐药性,为临床科室诊治血流感染疾病和控制感染提供重要的参考依据。方法 收集某院2016—2020年血培养阳性样本,采用细菌鉴定和药敏分析系统检测,用WHONET 5.6软件进行病原菌分布特点及药敏结果的整理分析。结果 从血培养阳性标本分离出非重复菌3 424株,主要来自老年病科、危重症监护室、急诊留观室等。其中革兰阴性菌1 873株,常见有大肠埃希菌、肺炎克雷伯菌、铜绿假单胞菌等。近五年超广谱β-内酰胺酶革兰阴性耐药菌呈缓慢上升趋势,其余耐药菌变化趋势不大。革兰阴性菌对头孢哌酮/舒巴坦、哌拉西林/他唑巴坦、头孢他啶、头孢吡肟、庆大霉素、妥布霉素、阿米卡星等总体耐药率均＜30%。革兰阳性菌1 328株,主要是葡萄球菌属,对达托霉素、替加环素均无耐药,对利奈唑胺、万古霉素、替考拉宁耐药率处于较低水平,对复方新诺明和克林霉素等的耐药率近五年呈缓慢下降趋势。结论 血流感染主要常见分离菌为肠杆菌属和葡萄球菌属,临床应重视早期规范血培养和药敏结果,科学合理规范使用抗菌药。

Objective To investigate the distribution characteristics and drug resistance of isolates from blood culture, and to provide important reference for the diagnosis and treatment of bloodstream infection and infection control in clinical practice. Methods Positive blood culture samples of a hospital from 2016 to 2020 were collected and detected by bacteria identification and drug sensitivity analysis system. The distribution characteristics of pathogenic bacteria and drug sensitivity results were analyzed by WHONET 5.6 software. Results A total of 3 424 non-repeating strains were isolated from positive blood culture specimens, which were mainly from geriatrics department, critical care unit, emergency observation room, etc.Among them, 1 873 strains of Gram-negative bacteria were found, including Escherichia coli, Klebsiella pneumoniae and Pseudomonas aeruginosa. In recent five years, the extended-spectrum beta-lactamases Gram-negative drug resistant bacteria was slowly increasing, while other drug resistant bacteria showed little change. The overall drug resistance rates of Gram-negative bacteria to cefoperazone/sulbactam, piperacillin/tazobactam, ceftazidime, cefepime, gentamicin, tobramycin and amicacin were all less than 30%. There were 1 328 Gram-positive strains, mainly Staphylococcus, showed no resistance to datoromycin and tegacycline, and the resistance rates to linezolid, vancomycin and teicolanin were at a low level, while the resistance rates to cotrimoxazole and clindamycin showed a slow declining trend in recent five years. Conclusion Enterobacteria and Staphylococcus were the most common isolates of bloodstream infection. In clinical practice, attention should be paid to the early blood culture and drug sensitivity results, and the antimicrobial drugs should be used scientifically and rationally.

目的 分析高龄呼吸道感染患者病原菌检测结果及耐药性情况,总结高龄呼吸道感染患者抗菌药物的合理用药经验。方法 对我院2018年1月—2020年12月收治的784例高龄呼吸道感染患者痰液标本进行病原菌培养及药敏试验,统计分析检测结果。结果 701株病原菌中,革兰阴性(G-)菌、革兰阳性(G+)菌和真菌分别检出497株、136株和68株,分别占70.90%、19.40%和9.70%。G-菌以肺炎克雷伯菌、铜绿假单胞菌、大肠埃希菌和奇异变形杆菌为主,分别占21.97%(154株)、18.97%(133株)、14.98%(105株)和7.13%(50株),G+菌以金黄色葡萄球菌为主,占11.27%(79株)。G-菌耐药性前五位依次为氨苄西林、哌拉西林、复方磺胺甲噁唑、头孢唑啉和头孢他啶,耐药率依次为95.96%、85.11%、79.88%、77.06%和52.92%。G+菌耐药性前五位依次为青霉素、氨苄西林、红霉素、环丙沙星和复方磺胺甲噁唑,耐药率依次为95.59%、89.71%、84.56%、80.15%和75.00%。结论 高龄呼吸道感染患者病原菌构成以肺炎克雷伯菌、铜绿假单胞菌、大肠埃希菌、奇异变形杆菌和金黄色葡萄球菌为主,G-菌对氨苄西林、哌拉西林、复方磺胺甲噁唑、头孢唑啉和头孢他啶耐药最强,G+菌对青霉素、氨苄西林、红霉素、环丙沙星和复方磺胺甲噁唑最强,且呈多重耐药特征,加强临床耐药性监测有助于指导合理用药。

Objective To analyze the test results and drug resistance of pathogenic bacteria in elderly patients with respiratory tract infections, and summarize the rational use of antibiotics in elderly patients with respiratory tract infections. Methods The sputum samples of 784 elderly patients with respiratory tract infections admitted to our hospital from January 2018 to December 2020 were collected for pathogen culture and drug sensitivity test, and the test results were statistically analyzed. Results Among 701 strains of pathogenic bacteria, 497 strains were Gram-negative (G-) bacteria (70.90%), 136 strains were Gram-positive (G+) bacteria (19.40%) and 68 strains were fungi (9.70%). G-bacteria were mainly Klebsiellapneumoniae, Pseudomonas aeruginosa, Escherichia coli and Proteus mirabilis, accounting for 21.97% (154 strains), 18.97% (133 strains), 14.98% (105 strains) and 7.13% (50 strains). G+bacteria were mainly Staphylococcus aureus, accounting for 11.27% (79 strains). The top five antibiotics which G-bacteria resisted were ampicillin, piperacillin, compound sulfamethoxazole, cefazolin and ceftazidime.The resistance rates were 95.96%, 85.11%, 79.88%, 77.06% and 52.92%,respectively. The top five antibiotics which G+bacteria resisted were penicillin, ampicillin, erythromycin, ciprofloxacin and compound sulfamethoxazole, and the drug resistance rates were 95.59%, 89.71%, 84.56%, 80.15% and 75.00%, respectively. Conclusions The pathogenic bacteria in elderly patients with respiratory tract infections were mainly Klebsiella pneumoniae, Pseudomonas aeruginosa, Escherichia coli, Proteus mirabilis and Staphylococcus aureus. G-bacteria resisted ampicillin, piperacillin,compound sulfamethoxazole, cefazolin and ceftazidime the most. G+bacteria were most resistant to penicillin, ampicillin, erythromycin, ciprofloxacin and compound sulfamethoxazole, and were characterized by multi-drug resistance.Enhancing bacterial resistance monitoring helps guiding the rational use of drugs.