腹腔镜直肠癌根治术(Dixon)

在结肠系膜与后腹膜移行处切开后腹膜,分离系膜至肠系膜下动脉根部,清扫253组淋巴结,在距腹主动脉根部1 cm处夹闭并切断血管,切断肠系膜下静脉。由内侧向外侧分离结肠系膜至结肠旁沟,切开其左侧后腹膜,将降结肠及乙状结肠系膜从后腹壁游离。沿直肠固有筋膜与盆壁筋膜的间隙按照TME原则锐性分离直肠系膜,先游离后壁,再游离两侧壁及前壁,直至盆底。在肿瘤下方2 cm处用阻断夹夹闭肠管,冲洗远端直肠,用切割缝合器切断直肠。取脐部弧形切口。提出近端肠管,于肿瘤近端15 cm处离断肠管。近端置入管型吻合器抵钉座,还纳腹腔,重建气腹。经肛置入管型吻合器,在腹腔镜直视下作乙状结肠－直肠端端吻合,冲洗腹腔,置引流管,手术结束。     

Percent free prostate specific antigen in the total prostate specific antigen 2 to 4 ng./ml. range does not substantially increase the number of biopsies needed to detect clinically significant prostate cancer compared to the 4 to 10 ng./ml. range

PURPOSE: Percent free prostate specific antigen (PSA) is useful to select patients for prostate biopsy with total PSA 4 to 10 ng./ml. However, 20% of men with PSA between 2.6 and 4 ng./ml. harbor significant prostate cancer and percent free PSA has been suggested to aid in the decision to biopsy in this total PSA range as well. Concerns exist that the number of biopsies needed to detect 1 cancer in this range may be inappropriately high. In a prospective referral population we evaluated sensitivity and specificity of various percent free PSA cutoffs and determined the biopsy-per-cancer ratio in the PSA 2 to 4 ng./ml. range in men with a benign digital rectal examination, and report on the biological nature of the detected cancers based on Gleason score. Results were compared to those obtained from a reference group of patients (PSA 4 to 10 ng./ml., benign digital rectal examination) from the same prospective referral cohort. MATERIALS AND METHODS: Total PSA and free PSA were measured and percent free PSA was calculated. Of the initial 1,602 men 756 had a benign digital rectal examination and PSA 4 to 10 ng./ml., and 219 had a benign digital rectal examination and PSA 2 to 4 ng./ml. Sensitivity, specificity, the number of true positive (evidence of cancer) and false-positive (no evidence of cancer) biopsies were determined. The ratio of true positive biopsies-to-all biopsies performed was used to determine the biopsy-per-cancer ratio. Gleason score of the detected cancers was evaluated. The procedure was repeated for the PSA 4 to 10 ng./ml. range. RESULTS: In the PSA 4 to 10 ng./ml. range a sensitivity of 63.7% to 92.5% with a specificity of 57.5% to 18.7% was found when percent free PSA was 18% to 25%. On average 3 biopsies were needed to detect 1 cancer. When PSA was 2 to 4 ng./ml. sensitivity was 46.3% to 75.6% and specificity was 73.6% to 37.6% when the same percent free PSA cutoff was examined. Calculation of the biopsy-per-cancer ratio for various percent free PSA cutoffs revealed that 3 to 5 biopsies were needed to find 1 cancer. Of 41 cancers detected in the PSA 2 to 4 ng./ml. range 6 had a Gleason score 5. The majority (28 of 41) of cases had a Gleason score of 6. Gleason score was 7 in 5 patients and 8 in 1. CONCLUSIONS: In the PSA 4 to 10 ng./ml. range high sensitivity for prostate cancer detection is critical and 3 biopsies are needed to detect 1 cancer. In the PSA 2 to 4 ng./ml. range a percent free PSA cutoff of 18% to 20% detected about 50% of cancers while sparing up to 73% of unnecessary biopsies with a biopsy-to-cancer ratio of 3 to 4:1. Percent free PSA can be applied to the PSA 2 to 4 ng./ml. range to detect prostate cancer and only moderately increases the number of biopsies needed to detect 1 significant cancer compared to the greater than 4 to 10 ng./ml. range.     

Aberrations in Hollander test response after incomplete vagotomy. Compensating effect of antral resection in the dog.

Acid secretory and serum gastrin responses to 2-deoxy-D-glucose and insulin were compared in gastric fistula dogs before and after partial vagotomy and pyloroplasty or partial vagotomy and antrectomy. The acid response and serum gastrin curve were basically unaltered by partial vagotomy and pyloroplasty. Based on the data presented, the acid response to insulin hypoglycemia appears to be more dependent on the vagal release of antral gastrin than on direct vagal stimulation of the parietal cell. However, acid response to insulin was profoundly suppressed to only 4 per cent of control levels after partial vagotomy and antrectomy. Although acid response to 2-deoxy-D-glucose was also profoundly depressed to 33 per cent of control levels after partial vagotomy and antrectomy, it was seven times greater than that seen with insulin. Serum gastrin response was abolished after antrectomy to either insulin or 2-deoxy-D-glucose. Finally, the question to which we originally addressed ourselves appears to have been answered and, in terms of response to vagal stimulation, antrectomy appears to compensate for incomplete vagal denervation and may lead to aberrations and misinterpretations, raising serious questions as to the validity of the Hollander test in patients who have undergone distal gastric resection.     

Crystalloids,colloids, blood,blood products and blood substitutes

Understanding the physiology of fluid distribution within the human body is fundamental to the practice of anaesthetists and intensivists of all grades. There is a necessity to recognize the range of actions and consequences of the commonly infused intravenous fluids if safe patient care is to be provided. There are many historical and on-going trials surrounding fluid therapy and it is important for the physician to keep up to date with current guidelines.There is a continued drive to improve the safety of donor blood and prevent transfusion errors. Knowledge of how blood products are collected separated and stored is essential to prevent harm to patients through transfusions. Work in producing blood substitutes is progressing, but to date, trials have failed to market a product in Europe and the USA with an acceptable risk profile.     

Ethics of delivering the message of impending death]

Two questions are discussed: 1. our relation to death. Contrary to the saying "shadows of the death" and to it's modern concealment this contribution states: death gives light: it enables to be conscious of one's self and to bow to the inevitable, it shows the valuables of earthly and mortal beings, and even allows us to hope. 2. Solidarity in the situation of death. This situation means the experience of being abandoned and in the same time the challenge to release the other (and to allow him to live [respectively to go]). Against the ego-centralizing power of pain and dread especially the dying needs aid--only to face to (the "hour of") truth. The decisive help is the helper: his being there and remaining by under the common fate.     

Biobank concept in poland

Possible adverse events and reactions associated with organ procurement and transplantation from deceased donors require compliance with quality and safety standards. Shortage of organs for transplantation makes it necessary to obtain organs from nonstandard (expanded-criteria) donors. This increases the risk of disease transmission with the graft which is difficult or impossible to identify before transplantation. The long-term access to biologic material of organ donors and recipients proffers the possibility to evaluate serious adverse reactions as well as to improve the quality and safety in transplantation medicine. Implementation of the above-mentioned tasks requires a Biobank whose aims are: to gather and long-term storage sera, lymph nodes, and other tissues of deceased organ donors for analysis of their biologic properties; to gather and store organ recipient sera; to determine methods to store biologic material in a manner enabling identification of the donor, organ, and recipients; and to provide electronic record keeping. Tactical tasks of a Biobank are: to carry out new or verify results of previously performed testing of deceased donors and recipients as controls to evaluate transmission of infection; to perform genetic material testing (NAT) to verify and confirm serologic tests, eg, determination of HIV RNA/DNA in donors at risk of infections; to discover rare diseases in donors and recipients whose detection before transplantation is difficult because of the time constraints related to organ storage or the lack of available methods (eg, sponge encephalopathies); to perform biochemical or genetic tests to evaluate neoplasia transfer from donor to recipient; and to reexamine HLA typing in cases of immunologic complications.     

Working together as a team: adolescent transplant recipients and nurse practitioners

Nurse practitioners are a critical part of the transplant team, enhancing the quality of patient care with their knowledge and skill with respect to disease-specific populations of patients. Adolescent transplant recipients are a vulnerable population and require specific considerations. Nurse practitioners can successfully tailor care to the adolescent developmental stages in order to promote quality of life, adherence to the medical regimen, and successful transition to adult transplant centers and to minimize risk-taking behaviors. Teamwork between the patient's family and the entire transplant team is important to optimize not only the patient's health but also to ensure quality of life after transplant. Adolescents can be especially challenging after transplant, given their complex and evolving psychosocial and cognitive development. Nurse practitioners are in a unique position to be central in adolescents' successful adaptation to their medical condition. Facilitating identification and management of medication-related side effects, awareness of emotional health and quality of life, adherence to the medical regimen, and eventual transition to adult caregivers all remain critically important steps in care that are ideally suited for advance practice leadership.     

A laboratory training model for interhemispheric-transcallosal approach to the lateral ventricle

Laboratory training models are essential for developing and refining surgical skills before clinical application of microneurosurgery. Our aim is to train residents of neurosurgery to be familiar with a basic microneurosurgical technique in access to the lateral ventricle via a transcallosal approach. The training material consists of a 2-year-old fresh cadaveric cow cranium. A four-step approach was designed to simulate microneurosurgical dissection along the falx to visualize cingulated gyri, callosomarginal and pericallosal arteries in order to perform callosotomy and access to the lateral ventricle, and finally to the foramen of Monroe. We conclude that the model perfectly simulates standard microneurosurgical steps in interhemispheric-transcallosal approach to the lateral ventricle and to the area of the foramen of Monroe.     

EULID Project: European Living Donation and Public Health

The choice of transplantation from a living donor offers advantages over a deceased donor. However, it also carries disadvantages related to donor risks in terms of health and safety. Furthermore, there are several controversial ethical aspects to be taken into account. Several national and international institutions and the scientific community have stated standards that have great influence on professional codes and legislations. Living organ donation and transplantation are to some extent regulated by parliamentary acts in most European countries. It is necessary to take a step forward to develop a legal framework to regulate all of these processes to guarantee the quality and to prevent illegal and nonethical practices. It is also necessary to develop and implement living donor protection practices not only in terms of physical health, but also to minimize potential impacts on the psychological, social, and economic spheres. Finally, an additional effort should be made to create a database model with recommendations for registration practices as part of the standardized follow-up care for the living donor. The European Living Donation (EULID) project's (http://www.eulivingdonor.eu/) main objective was to contribute to a European consensus to set standards and recommendations about legal, ethical, and living donor protection practices to guarantee the health and safety of living donors.     

计算机辅助下颌骨截骨的三维显微结构模型建立

目的 探索计算机重建下颌骨三维显微结构模型及下颌角截骨手术的三维仿真操作方法 ,以减少手术操作中的组织损伤. 方法 利用螺旋CTA数据重建包含血管神经束的下颌骨三维模型并进行测量分析,使用Freeform雕刻刀及其布尔运算的切割方法 对模型进行保护血管的手术模拟.结果 利用计算机辅助技术可以精确的重建包含下牙槽动脉的下颌骨三维模型:血管从下颌孔进入下颌支.依照下颌支外缘弧度走行,下颌孔距下颌支前缘距离为(19.13±0.66)mm,孔距下颌支后缘距离为(18.96±0.64)mm,下颌角的角度为(109.70±4.67)°,下颌支的安全截骨范围和角度是平行下颌支外缘(12.62±0.28)mm宽、与下颌底成角(22.30±4.67)°;根据模型与数据,Fredorm可以模拟安全的下颌角截骨的手术操作. 结论 下颌骨显微结构的三维模型重建和测量分析技术,是增加手术安全性的一条新途径.     

Principles of pressure transducer function and sources of error in clinical use

The invasive measurement of physiological pressures is a common requirement in anaesthesia and intensive care medicine. From arterial blood pressure to intracranial pressure, these calculated variables give a swift graphical and numerical representation of a patient's current physiological status. This allows us to respond rapidly to conditions outside our preferred parameters and to carefully titrate treatment to target effects. These systems are, however, not infallible. An understanding of the principles of their function will promote appropriate use and an ability to recognize and react to sources of error. This article aims to furnish the reader with this level of understanding in order to inform their academic and clinical practice.     

Role of glutathione in cisplatin resistance in osteosarcoma cell lines

This study was designed to examine whether and how glutathione and catalase increase the resistance of osteosarcoma cells to the toxicity of cisplatin. Eight osteosarcoma cell lines were exposed to varying concentrations of cisplatin. and a [³H]thymidine incorporation study then estimated their drug sensitivity. Cells were pretreated with aminotriazole and buthionine sulfoximine to depress catalase and glutathione activities and then entered into the same protocol to assess their sensitivity to cisplatin. Intracytoplasmic levels of catalase and glutathione were measured before and after the treatments. Cisplatin-glutathione conjugates were created to examine how glutathione might depress the toxicity of cisplatin. Although the cell lines differed in the magnitude of their response to cisplatin, there was a statistical correlation between intrinsic glutathione content and cisplatin resistance. Pretreatment with aminotriazole reduced catalase activity by 84% but did not change the sensitivity to cisplatin. Depletion of glutathione activity by 70% increased the sensitivity of the cells to the cytotoxicity of cisplatin. In addition, cisplatin was detoxified following conjugation with glutathione. The increased sensitization to cisplatin toxicity caused by the depletion of glutathione and cisplatin detoxification after the in vitro reaction of glutathione to cisplatin indicated that the formation of the glutathione-cisplatin conjugate was an important mechanism in the cellular resistance to cisplatin. These data also demonstrated that catalase activity did not contribute to resistance to cisplatin and suggested that H₂O₂-induced oxidative stress did not significantly contribute to the cytotoxicity of cisplatin in osteosarcoma cells.     

Reliability and validity of visual assessments of gait using a modified physician rating scale for crouch and foot contact

This study evaluates the visual assessment of gait using portions of the Physicians' Rating Scale (PRS). Thirty children with pathologic gait were evaluated "live" and using full- and slow-speed video. Interobserver reliability (weighted kappa) was 0.57 to 0.74 for foot contact, 0.69 to 0.71 for crouch, 0.30 to 0.40 for hip flexion, 0.57 to 0.65 for knee flexion, and 0.42 to 0.52 for dorsiflexion in stance. Intraobserver reliability (comparing the three conditions) was 0.50 to 0.78 for foot contact, 0.71 to 0.80 for crouch, 0.26 to 0.44 for hip flexion, 0.60 to 0.86 for knee flexion, and 0.39 to 0.61 for dorsiflexion. Observers were correct only 12% to 32% of the time when reporting less than 0 degrees of dorsiflexion and 0% to 29% of the time when reporting more than 20 degrees of hip flexion due to overestimation of hip flexion and underestimation of ankle dorsiflexion. These errors could lead some clinicians to presume the presence of contractures that do not actually exist. Visual assessment using the PRS does not appear to accurately measure what it is most commonly used to assess: ankle position in stance.     

Access to kidney transplantation: the limitations of our current understanding

Since kidney transplantation (KTX) is the preferred means of treating kidney failure, ensuring that all patients who may benefit from KTX have equal access to this scarce resource is an important objective. Studies focusing on this issue will become increasingly important as the gap between the demand and supply of organs continues to increase, and changes to the United Network of Organ Sharing organ allocation policy are actively debated. However, it is clear that current methods used to study access to KTX have serious limitations. This review highlights the shortcomings of the methods currently used to assess access to KTX, and the limitations of registry data and national wait-list data as information sources to study patient access to KTX. The review also provides suggestions for research and analytical approaches that might be utilized to improve our future understanding of patient access to KTX. The information provided will aid the reader to critically assess issues related to patient access to KTX.     

Return to sport following anterior cruciate ligament reconstruction

Rates of return to pre-injury sport following anterior cruciate ligament (ACL) reconstruction are less than might be expected from standard outcome measures and there appears to be a rapid decline in sporting participation after two to three years. There are many factors that influence whether an individual will return to sport following this type of surgery. They include not only surgical details and rehabilitation, but also social and psychological factors, as well as demographic characteristics. Age is of particular importance with older patients being less likely to resume their pre-injury sport. It is important that future research clearly identify the pre-injury characteristics of the study cohort when investigating return to sport, and also that there is consistent and precise terminology used to report rates of return to sporting activities. Little is known about how to determine when it is safe to return to sport following ACL reconstruction or how to predict whether an athlete will be able to successfully return to sport. Finally, it needs to be recognised that return to sport following ACL reconstruction is associated with a risk of further injury and the development of osteoarthritis.     

山东某三甲医院儿童急性骨髓炎致病菌及耐药性分析

目的 总结山东大学附属儿童医院儿童急性骨髓炎脓液培养及药敏结果,为临床抗生素的使用提供参考。方法 收集我院2018年1月至2023年1月诊治的115例儿童急性骨髓炎的病例资料进行回顾性分析,其中男孩71例,女孩44例,年龄19天～15岁,对脓液培养结果及药敏结果进行总结分析。结果 115例患儿中,53例为甲氧西林敏感性金黄色葡萄球菌（methicillin-susceptible Staphylococcus aureus,MSSA）,33例为耐甲氧西林金黄色葡萄球菌（methicillin-resistant Staphylococcus aureus,MRSA）,2例为肺炎链球菌,1例为肠炎沙门菌,1例为流感嗜血杆菌,25例为阴性。53例MSSA中,51例对氨苄西林耐药,42例对克林霉素耐药,41例对红霉素耐药,仅1例对庆大霉素耐药,所有患儿均对青霉素耐药,均对阿莫西林、头孢西丁、苯唑西林、万古霉素和利奈唑胺敏感。33例MRSA中,27例对克林霉素耐药,27例对红霉素耐药,3例对庆大霉素耐药,所有患儿均对氨苄西林、阿莫西林、头孢西丁、苯唑西林和青霉素耐药,均对万古霉素和利奈唑胺敏感...     

High-performance teams for current and future physician leaders: an introduction

The scope of patient management increasingly crosses the defined lines of multiple medical specialties and services to meet patient needs. Concurrently, many hospitals and health-care systems have adapted new multidisciplinary team structures that provide patient-centric care as opposed to the more traditional discipline-centered delivery of care. As health care continues to evolve, the use of teams becomes even more critical in allowing interdependence between multiple disciplines to provide excellent care delivery and ongoing patient management. The use of teams permeates the health-care industry (and has done so for many years), but confusion about the structure, role, and use of teams contributes to limited effectiveness. The health-care industry's underuse of the fundamentals of corporate teamwork has, in part, created ineffective team leadership at the physician level. As the first in a series of documents on teamwork, this article is intended to introduce the reader to the rudiments of team theory and to present an introduction to a model of teamwork. The role of current and future physician leaders in ensuring team effectiveness is emphasized in this discussion. By educating health-care professionals on the foundations of high-performance teamwork, we hope to accomplish two main goals. The first goal is to help create a common and systematic taxonomy that physician leaders and institutional management can agree on and refer to concerning the development of high-performance health-care teams. The second goal is to stimulate the development of future physician leaders who use proven teamwork principles as a powerful modality to achieve efficient and optimal patient care. Most importantly, we wish to emphasize that health care, both philosophically and practically, is delivered best through high-performance teams. For such teams to perform properly, the organizational environment must support the team concept tangibly. In concert, we believe the best manner in which to cultivate knowledge and performance of the health-care organizational mission and goals is by using such teams.     

Decision-Making Capacity and Disaster Research

The extent to which victims of a disaster are able to make capacitated and voluntary decisions to enroll in research is an important and virtually unexplored question. Although there are no compelling data to suggest that experiencing a severe trauma, in and of itself, renders all or even most individuals incapable of making autonomous decisions, the assessment of decision-making capacity (DMC) for research participation warrants serious consideration. This paper provides a framework for and procedural approach to the assessment of DMC in research with individuals exposed to disaster. Particular attention is paid to the implementation of additional safeguards to protect subjects who are vulnerable by virtue of impaired DMC. Recommendations are offered to clinical investigators, ethical review boards, and policymakers with regard to the design, review, and conduct of research in the aftermath of disaster.     

The problems in France created by the HIV/AIDS epidemic at the onset of the third millenium

UNANSWERED QUESTIONS: The HIV/AIDS epidemic represented a medical, social and political challenge to our society. It raises numerous questions, to which some replies have been partially proposed. In the context of less attention paid to AIDS, the epidemic continues to create problems in France and has led to the debates on medical and sanitary questions and other political, social and economical issues. FROM A THERAPEUTIC POINT OF VIEW: Among the issues concerning health management, those related to treatment are first-line: progress in therapeutic indications, choice of antiretroviral molecules and their combinations, particular aspects of treatments delivered in certain circumstances (pregnant women or primary-infection), difficulties in the assessment of the benefit/risk progress. The problems of compliance that occasionally induce severe side effects, provoke therapeutic failure in some patients and for whom rapid access to new antiretroviral molecules and new therapeutic strategies is mandated. THE CROSS-LINK WITH POLITICAL, SOCIAL AND ECONOMIC PROBLEMS: The resulting debates partly depend on the progress made in therapeutics. The latter have led to expectations of HIV-infected patients, who would like to benefit fully from the promise of a return to normal life (access to insurance and medically-assisted procreation). HIV/AIDS has led to new ethical debates on the rights of patients, such as those related to screening, clinical research or confidential access of under-aged patients to treatment. Some of these aspects involve political decisions: prevention measures to be taken against the possibility of a new epidemic, the risks and damages related to the use of drugs and the guarantee of access to treatment of patients living in under-developed countries.