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1.
《Journal of endodontics》2022,48(4):479-486
IntroductionAsepsis in endodontics aims to control all potential sources of infection. Inadvertent introduction of bacteria into the root canal system may occur when the aseptic chain is breached during treatment. Therefore, measures are taken to prevent such microbial access and establish an aseptic environment. This study aimed to assess potential bacterial contamination and the potential risk of iatrogenic introduction from 7 sites comprising surfaces, instruments, and files acquired during the treatment of 30 vital, pulpitic teeth.MethodsBacterial samples were collected from access burs, files, endodontic rulers, rubber dam surfaces, gloves, and instruments. Genomic DNA was extracted and quantified by quantitative polymerase chain reaction. Bacterial types were determined using next-generation sequencing.ResultsHigh frequencies of contamination and microbial numbers were encountered in all sample types examined.Thirty-eight percent of the initial files introduced into the root canal had significant levels of bacteria at the point of obturation, including endodontic pathogens. Around half of the rubber dam surfaces were contaminated with substantial bacterial loads at the time of obturation, and bacteria were also detected in 20%–30% of gloves, instruments, and rulers before obturation. Next-generation sequencing revealed the predominant oral or endodontic origin of these contaminants, with the following genera identified: Streptococcus, Rothia, Granulicatella, Cutibacterium, Corynebacterium, Peptostreptococcus, and Fusobacterium. Together, these findings highlight the potential risk of reintroducing endodontically relevant bacteria during treatment.ConclusionsGloves, rubber dams, instruments, and files acquire bacterial contamination during treatment at high frequencies and loads. This highlights the potential risk of iatrogenic contamination at the clinically vulnerable point of canal obturation. Measures to address these may improve clinical outcomes. 相似文献
2.
《Journal of endodontics》2022,48(9):1092-1099
IntroductionFew data are available on the long-term efficacy of mineral trioxide aggregate (MTA) in treating root canal perforations. This prospective cohort study builds on a previously reported trial to determine the outcome for teeth with root perforations treated with orthograde MTA after longer follow-up and identify potential prognostic factors.MethodsA prospective cohort study was performed, enrolling (1999–2009) patients with a single dental perforation treated with MTA. Preoperative, intraoperative, and postoperative information was evaluated, and the outcomes were dichotomized as healed or nonhealing. Patients were followed up yearly until 2018 for a maximum of 17 years after treatment, with controls carried out until 14 years. Clinical and radiographic outcomes were evaluated using standardized follow-up protocols.ResultsOf the 124 entrolled patients (median age = 36.5 years, 53.2% male), 115 were healed at the first (n = 110, 89%) or second (n = 5, 4%) annual posttreatment checkup, while 9 subjects (7%, 4 females, 18–65 years old) did not heal. Characteristics significantly associated with nonhealing were gender, positive probing, size, and perforation site. Perforations recurred in 48 teeth during the follow-up with the estimated probability of reversal at 5, 10, and 14 years of 6% (95% confidence interval [CI], 2%–10%), 30% (95% CI, 20%–38%), and 62% (95% CI, 46%–73%), respectively. Positive probing had a higher reversal risk (hazard ratio = 3.3, P ≤ .001), and perforations >3 mm were more likely to have a reversal (hazard ratio = 4.1, P < .001).ConclusionsThe risk of reversal for healed MTA-treated root canal perforations, initially relatively low, vastly increases over time. 相似文献
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《Nutrition, metabolism, and cardiovascular diseases : NMCD》2022,32(2):309-317
AimsThis review aims to provide an update of available methods for imaging calcification activity and potential therapeutic options.Data SynthesisAortic valve calcification represents the most common heart valve condition requiring treatment among adults in Western societies. No medical therapies are proven to be effective in treating symptoms or reducing disease progression. Therefore, surgical or transcatheter aortic valve replacement remains the only available treatment option. Elevated circulating concentrations of lipoprotein(a) is strongly associated with degenerative aortic stenosis. This relationship was first observed in prospective observational studies, and the causal relationship was confirmed in genetic studies.ConclusionsNew therapeutic targets have been identified and new imaging techniques could be used to test the effectiveness of new agents and further clarify the pathophysiology of AVS. No therapy that specifically lowers Lp (a) levels has been approved for clinical use. 相似文献
5.
目的探讨腰丛联合坐骨神经阻滞对高龄髋关节置换术患者术后疼痛的缓解作用及对认知功能的保护机制。 方法选取2016年6月至2018年5月于海南省万宁市人民医院行单次全髋关节置换术的高龄患者120例,年龄80~100岁,纳入标准:年龄范围为80~100岁,美国麻醉医师协会(ASA)分级Ⅱ~Ⅲ级;符合全髋关节置换术相关手术指征;认知功能正常。排除标准:合并严重原发疾病者;合并精神病或神经系统疾病者;依从性较差者;对本研究麻醉方案过敏者。所有患者采用随机数字表法分为两组:全身麻醉组(GA组),腰丛-坐骨神经阻滞组(PCSNB组),每组各60例。比较两组术中情况(麻醉操作时间、手术时间、术中出血量、术中补液量),手术前后血清碱性成纤维细胞生长因子(bFGF)水平。采用视觉模拟量表(VAS)评估两组患者术后疼痛程度,采用简易精神状态量表(MMSE)及蒙特利尔认知评估量表(MoCA)评估两组患者认知功能。正态分布的计量资料采用t检验,同一指标在3个以上不同时间点上比较,采用重复测量方差分析。 结果PCSNB组麻醉操作时间显著高于GA组(t=17.74,P<0.001),术中出血量及术中补液量均显著低于GA组(t=7.56、14.59、7.60,均为P<0.001)。术后1 d两组血清bFGF水平均有所下降(t=13.14、6.82,均为P<0.001),但PCSNB组血清bFGF水平显著高于GA组(t=7.43,P <0.001)。PCSNB组术后2、12及24 h的VAS评分显著低于对照组(F=8.03、6.56,均为P <0.001)。术后1 d,PCSNB组MMSE评分及MoCA评分均显著低于对照组(t=3.89、4.58,均为P <0.001)。 结论腰丛联合坐骨神经阻滞可减轻高龄髋关节置换术患者术后疼痛,对患者认知功能具有保护作用,可能与bFGF水平有关。 相似文献
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目的探讨基于微信平台的延续护理在颈动脉狭窄患者行颈动脉支架植入术后的应用效果。方法选择2019年1月—2020年12月于浙江省台州医院行颈动脉支架植入术的120例颈动脉狭窄患者为研究对象,根据随机数字表法将其分为干预组和对照组,各60例。对照组患者应用常规出院指导及随访护理,干预组在对照组的基础上实施基于微信平台的延续护理。采用简易生活质量量表(SF-36)、家庭亲密度与适应性量表中文版(FACESⅡ-CV)、自制治疗依从性调查问卷调查两组患者的生活质量、家庭功能、治疗依从性。结果干预后,干预组患者SF-36评分及FACESⅡ-CV评分、治疗依从性均高于对照组,差异均有统计学意义(P<0.05)。结论基于微信平台的延续护理可以有效提升行颈动脉支架植入术后颈动脉狭窄患者的生活质量、治疗依从性及家庭功能,值得临床应用。 相似文献
8.
目的:探讨颈动脉高分辨率MRI(HR-MRI)血管壁成像和超声对鉴别诊断脑卒中患者颈动脉狭窄原因的效果。方法:连续纳入2018年06月-2020年12月清远市人民医院神经内科诊断为脑卒中的患者31例,均行颈部辨血管壁HR-MRI检查、超声颈动脉以及数字减影血管造影术(DSA)检查。比较不同检查方式对颈动脉狭窄原因检出情况,并采用Kappa检验分析HR-MRI与DSA、超声与DSA诊断结果的一致性。结果:DSA、超声、HR-MRI对动脉硬化的检出率比较差异无统计学意义(P>0.05)。HR-MRI对动脉夹层的检出率高于超声,差异有统计学意义(P<0.05)。超声检查未见异常占比22.6%,DSA、HR-MRI检查未见异常均为0,差异有统计学意义(P<0.05)。Kappa检验分析显示,HR-MRI诊断颈动脉狭窄原因与DSA的一致性良好(Kappa值=0.669,P<0.05)。超声诊断颈动脉狭窄原因与DSA的一致性较差(Kappa值=0.221,P<0.05)。结论:高分辨率MRI血管壁成像技术对脑卒中患者颈动脉狭窄原因的鉴别诊断效果优于超声,可作为临床诊治补充检查首选方式。 相似文献
9.
目的 探讨降钙素原(PCT)与维持性血液透析(MHD)患者自体动静脉内瘘(AVF)并发症的关系。方法
选取使用AVF行MHD治疗的患者186例,根据随访过程中超声检查AVF是否出现并发症[狭窄和(或)血栓]分为并
发症组48例和非并发症组138例,收集2组患者透析龄、透析中收缩压下降≥30 mmHg(1 mmHg=0.133 kPa)例数、穿
刺失败或血肿形成例数、是否合并糖尿病等临床资料,并检测2组患者PCT、C反应蛋白(CRP)、血小板(Plt)等指标,
比较2组间上述指标的差异,应用二元Logistic回归分析AVF并发症的影响因素。结果 并发症组合并糖尿病、血液
透析中收缩压下降≥30 mmHg、穿刺失败或血肿形成发生率及PCT、CRP、透析龄高于非并发症组(P<0.05)。2组性
别、年龄、原发疾病、尿素清除指数、体质量指数、每月血液灌流及血液透析滤过时间等比较差异无统计学意义。二
元Logistic回归分析发现,较高水平的PCT、血液透析中收缩压下降≥30 mmHg、穿刺失败或血肿形成是发生AVF并发
症的独立危险因素(P<0.05)。结论 高水平PCT是MHD患者AVF并发症发生的危险因素,临床应重视对微炎症状
态的改善,并注意合理控制血压,避免血液透析中血压快速下降,不断提高穿刺技术。 相似文献
10.