Standard

Standard
  • 文章类型: Journal Article
    本研究从能源可持续性的角度解决了遗产预防性保护问题,为实现可持续发展目标(SDG)和欧盟绿色协议做出贡献。该研究分析并比较了标准EN16893:2018(案例1-3)建议的与不同微气候阈值相关的四个案例,并从三个用于保存纸张的降解模型的输出中得出。木头,和帆布画(案例4)。计算了基于天气的指数(度和克日),以估计属于不同柯本-盖革气候区的三个欧洲城市的收集设施的潜在能源需求趋势(CFB,Csa,和Dfb),在最近的过去(1981-2010)和近/远的未来气候情景(2021-2050和2071-2100)来自两个共享的社会经济途径(SSP2-4.5和SSP5-8.5)。研究结果表明,调整设施管理策略以关注收藏品保护可以促进17个可持续发展目标中的5个的实现。为昂贵的能源改造提供可行的替代方案,并鼓励为同一气候区的类似设施开发共享解决方案。结果可能有助于为EN16893的修订提供信息,并面临重大挑战,例如在南纬地区保存纸张收藏。
    This research addresses the issue of the heritage preventive conservation in the perspective of energy sustainability, for contributing to the achievement of the Sustainable Development Goals (SDGs) and towards the EU Green Deal. The study analyses and compares four cases associated with different microclimate thresholds as suggested by the standard EN 16893:2018 (Cases 1-3) and as derived from the outputs of three degradation models for preserving paper, wood, and canvas paintings (Case 4). Weather-based indices (degree and gram days) were calculated to estimate trends in the potential energy demand of collection facilities in three European cities belonging to different Köppen-Geiger climate zones (Cfb, Csa, and Dfb), under recent past (1981-2010) and near/far future climate scenarios (2021-2050 and 2071-2100) from two Shared Socioeconomic Pathways (SSP2-4.5 and SSP5-8.5). The findings suggest that adapting facilities\' management strategies to focus on collections preservation can facilitate the achievement of 5 out of 17 SDGs, offering a viable alternative to costly energy retrofits and encouraging the development of shared solutions for similar facilities in the same climate zone. The results can contribute to inform the revision of EN 16893 and to face major challenges such as the preservation of paper collections in southern latitudes.
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  • 文章类型: Editorial
    芯片上的器官是微生理系统,允许复制人体器官的关键功能,加速生命科学的创新,包括疾病建模。药物开发,精准医学。然而,由于其定义中缺乏标准,结构设计,细胞来源,模型构建,和功能验证,芯片上器官的广泛翻译应用仍然是一个挑战。"芯片上器官:肠"是中国第一个关于芯片上人体肠的团体标准,由中国生物技术学会专家共同商定并于2024年4月29日发布。本标准规定了适用范围,术语,定义,技术要求,检测方法,以及在芯片上构建人体肠道模型的质量控制。本团体标准的发布将指导机构建立,接受和执行适当的实用协议,并加速转换应用的芯片上肠道的国际标准化。
    Organs-on-chips are microphysiological systems that allow to replicate the key functions of human organs and accelerate the innovation in life sciences including disease modeling, drug development, and precision medicine. However, due to the lack of standards in their definition, structural design, cell source, model construction, and functional validation, a wide range of translational application of organs-on-chips remains a challenging. \"Organs-on-chips: Intestine\" is the first group standard on human intestine-on-a-chip in China, jointly agreed and released by the experts from the Chinese Society of Biotechnology on 29th April 2024. This standard specifies the scope, terminology, definitions, technical requirements, detection methods, and quality control in building the human intestinal model on a chip. The publication of this group standard will guide the institutional establishment, acceptance and execution of proper practical protocols and accelerate the international standardization of intestine-on-a-chip for translational applications.
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  • 文章类型: English Abstract
    本研究探讨了桂枝的外观性状与内部成分之间的关系,从而为质量评价和等级标准的制定提供参考。本研究测定了广西和广东核心产区41批肉桂枝条的外观性状和指标成分含量,并建立了HPLC特征图谱方法。碎片的重量,最窄的直径,并将tr和verse截面的最宽直径用作外观性状的指标。用建立的含量测定方法测定了指标成分(肉桂酸和肉桂海德)的含量。在Waters一XBridgeC_(18)(4。6mm×250mm,5μm)柱的流动相由0。1%磷酸乙腈梯度洗脱,流速为1mL·min~(-1)。柱温30℃,检测波长为254nm。聚类分析,主成分分析,采用其他化学计量方法分析了肉桂枝条的性状与指标/特征成分之间的相关性,并比较了不同批次和不同类型的肉桂枝条的质量差异。结果表明,重量越大,最窄的直径,横截面的最宽直径表示主要指标/特征成分的含量较低,不同成分之间存在协同下降趋势。广东省和广西的肉桂片总体质量相似,但是不同产地和同一产地的不同批次之间仍然存在差异。根据外观性状和指标/性状成分,对肉桂片进行质量评价,建立分级标准是科学可行的。该研究为桂枝的质量控制评价和标准制定提供了较为科学、全面的依据。
    This study explored the relationship between the appearance traits and internal components of Cinnamomi Ramulus pieces, so as to provide a reference for the quality evaluation and the formulation of grade standards. This study determined the appearance traits and index component contents of 41 batches of Cinnamomi Ramulus pieces in the core producing areas of Guangxi and Guangdongand established the HPLC characteristic map method. The weight of the pieces, the narrowest diameter, and the widest diameter of the tr ansverse section were used as the indices of appearance traits. The content of index components(cinnamic acid and cinnamalde hyde)was determined by the established content determination method. The chromatographic characteristics were determinedon a Waters XBridge C_(18)(4. 6 mm×250 mm, 5 μm) column with a mobile phase consisting of 0. 1% phosphoric acidacetonitrile and gradient elution at the flow rate of 1 mL ·min~(-1). The column temperature was 30 ℃, and the detection wavelength was 254 nm. Cluster analysis, principal component analysis, and other stoichiometric methods were used to analyze the correlation between theap pearance traits and the index/characteristic components of Cinnamomi Ramulus pieces and compare the qu ality differences of the piecesfrom different batches and plac es. The results showed that the larger weight, the narrowest diameter, andthe widest diameter of the tra nsverse section indicated lowercontent of main indexes/characteristic components, and there was a synergistic decreasing trend amongd ifferent components. The overall quality of Cinnamomi Ramulus pieces in Guangdong Province and Guangxi Province was similar, but there were still differences between different origins and different batches of the same origin. It is scientific and feasible to evaluatethe quality of Cinnamomi Ramulus pieces and establish grading standards based on the appearance traits and index/character istic components. The research provides a more scientific and comprehensive basis for the quality control evaluation and standardformulation of Cinnamomi Ramulus.
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  • DOI:
    文章类型: Journal Article
    BACKGROUND: There has been an upsurge in the use of electrocautery in the treatment of benign prostatic hyperplasia (BPH) in our environment. Monopolar transurethral resection of the prostate (M-TURP) still remains the gold standard in the surgical management of BPH.
    OBJECTIVE: To present our experience and the clinical outcome of M-TURP in north-central Nigeria.
    METHODS: Data on demographics, indications, comorbidities, duration of surgery, weight of resected tissue, outcome of surgery, and complications were collected. International Prostate Symptom Score (IPSS) and Quality of Life (QoL) scores were assessed pre- and post-operatively. Results were analyzed using descriptive statistics. Student t-test was used for the comparison of continuous data while categorical data were compared by using Chi-square. P-value was considered significant if <0.05.
    RESULTS: In this retrospective study, out of 227 men who met the inclusion criteria, two patients\' procedures were converted to open surgery (conversion rate of 0.9%). The mean age of our patients was 65.2 + 7.5 years (44-90). The commonest indication for surgery was LUTS unresponsive to medical therapy (54.7%, n=123), followed by acute urinary retention (36.4%, n=82). The average weight of resected tissue was 36.5+12.1g (range 10-89) The weight of resected tissue correlated positively to prostate size measured by ultrasonography and it was also statistically significant (r = 0.568 and p-value <0.001). The early complications encountered were urinary tract infection (3.6%, n=8), clot retention (1.8%, n=4), and significant hematuria requiring blood transfusion (1.8%, n=4).
    CONCLUSIONS: In our setting, M-TURP demonstrates safety and efficacy in treating BPH. Skill and experience contribute to better outcomes, facilitating the management of larger prostates through refined techniques.
    BACKGROUND: Il y a eu une augmentation de l\'utilisation de l\'électrocautérisation dans le traitement de l\'hyperplasie bénigne de la prostate (HBP) dans notre environnement. La résection transurétrale monopolaire de la prostate (RTUP-M) reste néanmoins la référence en matière de gestion chirurgicale de l\'HBP.
    OBJECTIVE: Présenter notre expérience et les résultats cliniques de la RTUP-M dans le centre-nord du Nigéria.
    UNASSIGNED: Des données sur la démographie, les indications, les comorbidités, la durée de la chirurgie, le poids du tissu réséqué, les résultats de la chirurgie et les complications ont été collectées. Les scores de l\'Indice International des Symptômes Prostatiques (IPSS) et de la Qualité de Vie (QoL) ont été évalués avant et après l\'opération. Les résultats ont été analysés à l\'aide de statistiques descriptives. Le test t de Student a été utilisé pour comparer les données continues tandis que les données catégorielles ont été comparées à l\'aide du test du Chi-carré. La valeur p était considérée comme significative si elle était inférieure à 0,05.
    UNASSIGNED: Dans cette étude rétrospective, sur 227 hommes répondant aux critères d\'inclusion, deux interventions ont été converties en chirurgie ouverte (taux de conversion de 0,9 %). L\'âge moyen de nos patients était de 65,2±7,5 ans (44-90). L\'indication la plus courante pour la chirurgie était les LUTS non réactifs au traitement médical (54,7 %, n =123), suivis de la rétention urinaire aiguë (36,4 %, n=82). Le poids moyen du tissu réséqué était de 36,5 ± 12,1 g (plage 10-89). Le poids du tissu réséqué était positivement corrélé à la taille de la prostate mesurée par échographie et était également statistiquement significatif (r=0,568 et p-value <0,001). Les complications précoces rencontrées étaient les infections des voies urinaires (3,6 %, n = 8), la rétention de caillot (1,8 %, n = 4) et une hématurie significative nécessitant une transfusion sanguine (1,8 %, n = 4).
    CONCLUSIONS: Dans notre cadre, la RTUP-M démontre sa sécurité et son efficacité dans le traitement de l\'HBP. La compétence et l\'expérience contribuent à de meilleurs résultats, facilitant la gestion de prostates plus grandes grâce à des techniques affinées.
    UNASSIGNED: Électrocautérisation; Référence; Hommes; Formation; Poids; Réséqué.
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  • 文章类型: Journal Article
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  • 文章类型: Journal Article
    语义互操作性促进了对电子健康记录(EHR)中记录的具有各种语义特征的健康数据的交换和访问。语义互操作性开发的主要目标需要患者数据的可用性,并在不丧失意义的情况下在不同的EHR中使用。国际上,当前的举措旨在加强EHR数据的语义开发,因此,患者数据的可用性。卫生信息系统之间的互操作性是欧洲卫生数据空间法规提案和世界卫生组织《2020-2025年全球数字卫生战略》的核心目标之一。
    为了实现集成的健康数据生态系统,利益相关者需要克服实现语义互操作性元素的挑战。为了研究语义互操作性发展的现有科学证据,我们定义了以下研究问题:构建集成在EHR中的语义互操作性的关键要素和方法是什么?推动发展的目标是什么?以及在这种发展之后可以感知到什么样的临床益处?
    我们的研究问题集中在语义互操作性的关键方面和方法以及在EHR背景下这些选择可能的临床和语义益处。因此,我们在PubMed中进行了系统的文献综述,根据以往的研究定义了我们的研究框架.
    我们的分析包括14项研究,其中数据模型,本体论,术语,分类,和标准被应用于建筑互操作性。所有文章都报道了所选方法增强语义互操作性的临床益处。我们确定了3个主要类别:增加临床医生的数据可用性(n=6,43%),提高护理质量(n=4,29%),并加强临床数据的使用和重复使用,用于不同的目的(n=4,29%)。关于语义发展目标,不同EHR之间的数据协调和语义互操作性发展是最大的类别(n=8,57%).通过标准化提高健康数据质量(n=5,36%)和开发基于可互操作数据的EHR集成工具(n=1,7%)是其他确定的类别。结果与需要从可通过各种EHR和数据库访问的异构医疗信息中构建可用和可计算的数据(例如,寄存器)。
    当走向临床数据的语义协调时,需要更多的经验和分析来评估所选择的解决方案如何适用于医疗数据的语义互操作性。而不是推广单一的方法,语义互操作性应该通过几个层次的语义需求来评估。双模型或多模型方法可能可用于解决开发过程中的不同语义互操作性问题。语义互操作性的目标将在分散和断开的临床护理环境中实现。因此,增强临床数据可用性的方法应该做好准备,思考出来,并有理由满足经济上可持续和长期的结果。
    UNASSIGNED: Semantic interoperability facilitates the exchange of and access to health data that are being documented in electronic health records (EHRs) with various semantic features. The main goals of semantic interoperability development entail patient data availability and use in diverse EHRs without a loss of meaning. Internationally, current initiatives aim to enhance semantic development of EHR data and, consequently, the availability of patient data. Interoperability between health information systems is among the core goals of the European Health Data Space regulation proposal and the World Health Organization\'s Global Strategy on Digital Health 2020-2025.
    UNASSIGNED: To achieve integrated health data ecosystems, stakeholders need to overcome challenges of implementing semantic interoperability elements. To research the available scientific evidence on semantic interoperability development, we defined the following research questions: What are the key elements of and approaches for building semantic interoperability integrated in EHRs? What kinds of goals are driving the development? and What kinds of clinical benefits are perceived following this development?
    UNASSIGNED: Our research questions focused on key aspects and approaches for semantic interoperability and on possible clinical and semantic benefits of these choices in the context of EHRs. Therefore, we performed a systematic literature review in PubMed by defining our study framework based on previous research.
    UNASSIGNED: Our analysis consisted of 14 studies where data models, ontologies, terminologies, classifications, and standards were applied for building interoperability. All articles reported clinical benefits of the selected approach to enhancing semantic interoperability. We identified 3 main categories: increasing the availability of data for clinicians (n=6, 43%), increasing the quality of care (n=4, 29%), and enhancing clinical data use and reuse for varied purposes (n=4, 29%). Regarding semantic development goals, data harmonization and developing semantic interoperability between different EHRs was the largest category (n=8, 57%). Enhancing health data quality through standardization (n=5, 36%) and developing EHR-integrated tools based on interoperable data (n=1, 7%) were the other identified categories. The results were closely coupled with the need to build usable and computable data out of heterogeneous medical information that is accessible through various EHRs and databases (eg, registers).
    UNASSIGNED: When heading toward semantic harmonization of clinical data, more experiences and analyses are needed to assess how applicable the chosen solutions are for semantic interoperability of health care data. Instead of promoting a single approach, semantic interoperability should be assessed through several levels of semantic requirements A dual model or multimodel approach is possibly usable to address different semantic interoperability issues during development. The objectives of semantic interoperability are to be achieved in diffuse and disconnected clinical care environments. Therefore, approaches for enhancing clinical data availability should be well prepared, thought out, and justified to meet economically sustainable and long-term outcomes.
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  • DOI:
    文章类型: Journal Article
    Fire accidents and burns are one of the leading causes of death and disability worldwide. This study was conducted with the aim of studying the etiology of fire accidents as well as investigating the fire safety standards of both homes and equipment in Iran. Samples included patients with flame burns who consented to answer the questions. Questions covered five areas: patient demographics, epidemiological characteristics of burns, the fire safety status of the home, the fire safety status of the equipment, and the mechanism of the accident. In this study, the mean extent of the burns was 18.07 ± 14.29% of body surface area and was significantly related to the age grouping of the patients. The highest total body surface area (TBSA) was observed in patients between 19 to 39 years. The most common cause of flame injuries was gas explosions (36.81%). The interviews revealed that most of the houses were not equipped with smoke detectors or fire extinguishers. The extent of burns was significantly higher in patients living in unequipped homes (P = 0.047). Cooking equipment was often involved in the accidents (38.1%). Considering the low home fire safety and the role of equipment misuse and damaged equipment use in the occurrence of accidents, it seems that installing fire alarms and firefighting equipment, proper training on how to work with and maintain the equipment, using cooking and heating equipment correctly along with discontinuing use if damaged would all be effective and are highly suggestive to reduce fire injuries.
    Les incendies et les brûlures sont une cause majeure de décès et de handicap dans le monde. Les buts de cette étude était d’identifier les causes d’incendie en Iran et d’évaluer la sécurité des maison et des équipements en Iran. Nous avons interrogé des victimes d’incendie acceptant de répondre à nos questions, qui relevaient de 5 sujets: démographie des patients, caractéristiques des brûlures, sécurité- incendie de leur domicile ainsi que des équipements et mécanisme de l’incendie. La surface brûlée était de 18,07 +/- 14,29%, significativement corrélée à l’âge de la victime, la surface maximale étant observée dans le groupe 19-39 ans. Une explosion de gaz était la cause la plus fréquente de déclenchement de l’incendie (36,81%) et les équipements de cuisson étaient impliqués dans 38% des cas. La plupart des habitations ne se pas équipées de détecteurs de fumées (DAAF) ni d’extincteurs, les brûlures étant plus étendues en l’absence de tels matériels (p= 0,047). Il est donc nécessaire de promouvoir l’installation de DAAF et d’extincteurs, de développer l’éducation à l’utilisation et à l’entretien des appareils de chauffage comme de cuisson, de décourager l’utilisation de ces appareils quand ils sont endommagés afin de réduire le risque d’incendie de domicile.
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  • 文章类型: Journal Article
    针对严重急性呼吸综合征冠状病毒-2(SARS-CoV-2)的中和抗体(NtAbs)是能够实现免疫监视的疫苗效力的指标。然而,SARS-CoV-2变异体的快速突变妨碍了及时建立有效XBB疫苗评估所需的标准.因此,我们准备了四个候选标准(编号11号44号22、不33)使用等离子体,纯化的免疫球蛋白,和广谱中和单克隆抗体。在9个中国实验室中,使用中和方法对11个含有XBB和BA.2.86亚谱系的菌株进行了协同校准。该研究证明了针对关注的SARS-CoV-2变体的第一个国际标准抗体对XBB变体的中和效力降低。不。44显示了对XBB亚谱系的广谱中和活性,有效降低几乎所有XBB变体的实验室间变异性,并有效地最小化活病毒和假型病毒之间的几何平均滴度(GMT)差异。不。图22显示针对所有菌株的更广谱和更高的中和活性,但未能降低实验室间变异性。因此,不。44被批准为NtAbs针对XBB变体的国家标准,首次为XBB变体提供统一的NtAb测量标准。此外,不。22被批准为针对SARS-CoV-2的NtAb的国家参考试剂,为当前和潜在的新兴变体提供广谱活性参考。
    Neutralizing antibodies (NtAbs) against severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) are indicators of vaccine efficacy that enable immunity surveillance. However, the rapid mutation of SARS-CoV-2 variants prevents the timely establishment of standards required for effective XBB vaccine evaluation. Therefore, we prepared four candidate standards (No. 11, No. 44, No. 22, and No. 33) using plasma, purified immunoglobulin, and a broad-spectrum neutralizing monoclonal antibody. Collaborative calibration was conducted across nine Chinese laboratories using neutralization methods against 11 strains containing the XBB and BA.2.86 sublineages. This study demonstrated the reduced neutralization potency of the first International Standard antibodies to SARS-CoV-2 variants of concern against XBB variants. No. 44 displayed broad-spectrum neutralizing activity against XBB sublineages, effectively reduced interlaboratory variability for nearly all XBB variants, and effectively minimized the geometric mean titer (GMT) difference between the live and pseudotyped virus. No. 22 showed a broader spectrum and higher neutralizing activity against all strains but failed to reduce interlaboratory variability. Thus, No. 44 was approved as a National Standard for NtAbs against XBB variants, providing a unified NtAb measurement standard for XBB variants for the first time. Moreover, No. 22 was approved as a national reference reagent for NtAbs against SARS-CoV-2, offering a broad-spectrum activity reference for current and potentially emerging variants.
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  • 文章类型: Journal Article
    目的:评估超微型PCNL(SMP,14Fr)与标准PCNL(sPCNL,24-30Fr)用于治疗1.5至3cm大小的肾结石。
    方法:从2021年2月至2022年1月,使用计算机生成的简单随机化,以1:1的比例将100例患者随机分为SMP组和sPCNL组(每组50例)。人口统计数据,石材特性,手术时间,围手术期并发症,输血,术后血红蛋白下降,术后疼痛,比较两组的住院时间和结石清除率.
    结果:平均结石体积(2.41cm2vs2.61cm2)和无结石率(98%vs94%,p=0.14)在SMP和sPCNL组中相似,分别。SMP组的平均手术时间明显更长(51.62±10.17分钟vs35.6±6.8分钟,p=0.03)。SMP组术中肾小管损伤(1/50vs7/50,p=0.42)和术后血红蛋白平均下降(0.8±0.7g/dlvs1.2±0.81,p=0.21)较低,但没有统计学意义。SMP组的平均术后疼痛VAS评分(5.4±0.7vs5.9±0.9,p=0.03)和平均住院时间(28.38±3.6hvs39.84±3.7h,p=0.0001)。达到Clavien2级的并发症具有可比性,标准组并发症≥3级较高,但没有统计学意义。
    结论:Super-miniPCNL与标准PCNL在治疗3厘米肾结石方面同样有效,术后疼痛和住院时间显著减少,Clavien≥3级并发症的风险较低,尽管手术时间更长。
    OBJECTIVE: To assess the safety and efficacy of super-mini PCNL (SMP, 14 Fr) when compared to standard PCNL (sPCNL, 24-30 Fr) in the management of renal calculi of size ranging from 1.5 to 3 cm.
    METHODS: From February 2021 to January 2022, a total of 100 patients were randomized to either SMP group or sPCNL group in a 1:1 ratio (50 in each group) using computer-generated simple randomization. Demographic data, stone characteristics, operative times, perioperative complications, blood transfusions, postoperative drop in haemoglobin, postoperative pain, duration of hospital stay and stone-free rates were compared between the two groups.
    RESULTS: Mean stone volume (2.41 cm2 vs 2.61 cm2) and stone-free rates (98% vs 94%, p = 0.14) were similar in both the SMP and sPCNL groups, respectively. The SMP group had significantly longer mean operative times (51.62 ± 10.17 min vs 35.6 ± 6.8 min, p = 0.03). Intraoperative calyceal injury (1/50 vs 7/50, p = 0.42) and mean postoperative drop in haemoglobin (0.8 ± 0.7 g/dl vs 1.2 ± 0.81, p = 0.21) were lower in the SMP group, but not statistically significant. SMP group showed significantly lower mean postoperative pain VAS scores (5.4 ± 0.7 vs 5.9 ± 0.9, p = 0.03) and mean duration of hospital stay (28.38 ± 3.6 h vs 39.84 ± 3.7 h, p = 0.0001). Complications up to Clavien grade 2 were comparable, with grade ≥ 3 complications higher in the standard group, but not statistically significant.
    CONCLUSIONS: Super-mini PCNL is equally effective as standard PCNL in treating renal calculi up to 3 cm, with significantly reduced postoperative pain and duration of hospital stay and lower risk of Clavien grade ≥ 3 complications, although with higher operative times.
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  • 文章类型: Journal Article
    经皮肾镜取石术(PCNL)是一种泌尿外科方法,可作为肾结石治疗的标准或无管方法。在一项回顾性队列研究中,评估并比较了88个手术单元,涉及75名18岁以下的肾结石儿童,他们在哈马丹的ShahidBeheshti和Boo-ali医院接受了8年的手术,采用标准或无管状PCNL的两种方法之一进行了手术。手术成功率,血红蛋白,血细胞比容下降,需要药物,需要输血,手术持续时间,以及住院时间的长短。在研究的88个单位中,47例采用标准PCNL,41例采用无管法。在由标准和无内胎PCNL操作的儿童中,手术完全成功率分别为87.2%和100%(P=0.006),输血需求为2.1%和0%(P=1.00),阿片类药物的需求量分别为27.7%和14.6%(P=0.134),血红蛋白下降为-1.82±0.94和-1.30±0.98mg/dl(P=0.024),血细胞比容下降为-5.40±2.66和-3.52±3.11mg/dL(P=0.003),平均手术时间为109.30±53.27和101.46±31.92min(P=0.414),术后住院时间分别为3.38±1.76和2.46±1.27天(P=0.007),发热频率分别为23.4%和7.3%(P=0.04),分别。无管化PCNL患儿肾结石手术成功率高于标准方法,其并发症较低。
    Percutaneous nephrolithotomy (PCNL) is an endourological method applied as the standard or tubeless method for kidney stone treatment. In a retrospective cohort study, 88 surgery units involving 75 children up to 18 years old with kidney stones who underwent the surgery for 8 years in Shahid Beheshti and Boo-ali hospitals in Hamadan with one of the two methods of standard or tubeless PCNL were evaluated and compared considering the success rate of operation, hemoglobin, hematocrit drop, need for medications, need for blood transfusion, duration of surgery, and the length of hospital stay. Among the 88 units studied, 47 cases were operated with the standard PCNL and 41 cases by tubeless method. In children operated by standard and tubeless PCNL, the complete success rate of operation was 87.2% and 100% (P = 0.006), the need for blood transfusion was 2.1% and 0% (P = 1.00), the need for opioids was 27.7% and 14.6% (P = 0.134), the decrease in hemoglobin was - 1.82 ± 0.94 and -1.30 ± 0.98 mg/dl (P = 0.024), the decrease in hematocrit was - 5.40 ± 2.66 and -3.52 ± 3.11 mg/dL (P = 0.003), the mean surgery duration was 109.30 ± 53.27 and 101.46 ± 31.92 min (P = 0.414), the duration of postoperative hospitalization was 3.38 ± 1.76 and 2.46 ± 1.27 days (P = 0.007), and the frequency of fever was 23.4% and 7.3% (P = 0.04), respectively. The success rate of kidney stone surgery in children with the tubeless PCNL is higher than the standard method, and its complications are lower.
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