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[Consensus doesn't always mean agreement: limitations of consensus methods in health services].

Taking decisions in uncertain situations has led to a high use of the consensus methods (Nominal Group Technique, Delphi Method, and Consensus Conferences) in the health services. The review made in this article shows that the appropriate use of these techniques requires a high degree of methodologic precision, especially in relation to the financer's declaration of objectives, the appropriate selection of the participants, previous realization of a synthesis of the preexistent information, the definition of the agreement degree which leads to the consensus and in the evaluation of its impact.

Centers for Disease Control and Prevention, U.S.↗
PubMed2003

The Bethesda System 2001: an update of new terminology for gynecologic cytology.

From the inception of TBS in 1988, it has been well received by the pathology and clinical communities. The need for a unifying system of nomenclature was so great that most of the laboratories in the United States, as well as in numerous countries worldwide, quickly adopted TBS. By 1991, only 2 years after the initial publication of the initial TBS, 57% of United States laboratories were using the system. By 1994, almost 90% of laboratories were using TBS [28]. Although explanations for such a quick acceptance of TBS are many, one of the leading reasons is, most certainly, the sound and thoughtful basis for all of the elements of TBS. These include: (1) nomenclature that provides uniform diagnostic terminology to facilitate unambiguous communication between the laboratory and the clinician; (2) diagnostic categories that incorporate the latest scientific information on the pathogenesis and prognosis of cervical lesions; and (3) incorporation of the evaluation of specimen adequacy as an integral part of the report. From the beginning, TBS was more than just a diagnostic lexicon. When Drs. Kurman and Solomon decided that something had to be done about the diagnostic mess in GYN cytology, they did not develop another system. Instead, they convened an international consensus conference to look at the problem and come up with a comprehensive, relevant solution. The input from the entire community, which lent strength to the initial TBS, has continued to the present. This is highlighted by the enormous amount of input that was received by the 2001 TBS forum groups that enabled them to fine tune the existing terminology to meet the needs of today's clinicians. The result, continues to be an evolving, comprehensive, and clinically relevant entity, that should meet the needs of pathologists and clinicians for the foreseeable future.

Cell Biology↗
PubMed2003

Hepatitis C and renal disease: an update.

Hepatitis C is both a cause and a complication of chronic renal disease. Chronic infection with hepatitis C virus (HCV) can lead to the immune complex syndromes of cryoglobulinemia and membranoproliferative glomerulonephritis (MPGN). The pathogenetic mechanisms for these conditions have not been defined, although they are clearly caused by the chronic viral infection. Management of HCV-related cryoglobulinemia and MPGN is difficult; antiviral therapy is effective in clearing HCV infection in a proportion of patients, but these conditions can be severe and resistant to antiviral therapy. Hepatitis C also is a complicating factor among patients with end-stage renal disease and renal transplants. The source of HCV infection in these patients can be nosocomial. Screening and careful attention to infection control precautions are mandatory for dialysis units to prevent the spread of hepatitis C. Prevention of spread is particularly important in these patients because HCV infection is associated with significant worsening of survival on dialysis therapy, as well as after kidney transplantation. Furthermore, therapy for hepatitis C is problematic, only partially effective, and associated with significant side effects in this population. There are significant needs in both basic and clinical research in the pathogenesis, natural history, prevention, and therapy for hepatitis C in patients with renal disease.

Animals↗
PubMed1997

Acute renal failure in the 21st century: recommendations for management and outcomes assessment.

Acute renal failure (ARF) remains a common and potentially devastating disorder affecting as many of 5% of all hospitalized patients, with a higher prevalence in patients in critical care units. ARF is more frequently observed in the setting of multiorgan dysfunction syndrome (MODS) and in elderly patients with complex disease, where mortality is high. Numerous technical advances have not yet impacted favorably on this high mortality rate. This report summarizes recommendations from participants at the National Institutes of Health Conference: "Acute Renal Failure in the 21st Century," May 6 to 8, 1996, in Bethesda, MD. The focus is on categorizing recent clinically relevant developments in the field and on identification of new research initiatives to transfer a new body of knowledge derived from fundamental studies and laboratory investigation to the management of ARF in the new millennium. The development of a multicenter database through cooperative multicenter studies is advocated. Future studies should define the appropriate outcome measures to assess and emphasize the impact of hemodynamic monitoring, adjunctive agents, and adequacy and modality of renal replacement therapy on outcomes in ARF.

Acute Kidney Injury↗
PubMed2001

Intensity-modulated radiotherapy: current status and issues of interest.

PURPOSE: To develop and disseminate a report aimed primarily at practicing radiation oncology physicians and medical physicists that describes the current state-of-the-art of intensity-modulated radiotherapy (IMRT). Those areas needing further research and development are identified by category and recommendations are given, which should also be of interest to IMRT equipment manufacturers and research funding agencies. METHODS AND MATERIALS: The National Cancer Institute formed a Collaborative Working Group of experts in IMRT to develop consensus guidelines and recommendations for implementation of IMRT and for further research through a critical analysis of the published data supplemented by clinical experience. A glossary of the words and phrases currently used in IMRT is given in the. Recommendations for new terminology are given where clarification is needed. RESULTS: IMRT, an advanced form of external beam irradiation, is a type of three-dimensional conformal radiotherapy (3D-CRT). It represents one of the most important technical advances in RT since the advent of the medical linear accelerator. 3D-CRT/IMRT is not just an add-on to the current radiation oncology process; it represents a radical change in practice, particularly for the radiation oncologist. For example, 3D-CRT/IMRT requires the use of 3D treatment planning capabilities, such as defining target volumes and organs at risk in three dimensions by drawing contours on cross-sectional images (i.e., CT, MRI) on a slice-by-slice basis as opposed to drawing beam portals on a simulator radiograph. In addition, IMRT requires that the physician clearly and quantitatively define the treatment objectives. Currently, most IMRT approaches will increase the time and effort required by physicians, medical physicists, dosimetrists, and radiation therapists, because IMRT planning and delivery systems are not yet robust enough to provide totally automated solutions for all disease sites. Considerable research is needed to model the clinical outcomes to allow truly automated solutions. Current IMRT delivery systems are essentially first-generation systems, and no single method stands out as the ultimate technique. The instrumentation and methods used for IMRT quality assurance procedures and testing are not yet well established. In addition, many fundamental questions regarding IMRT are still unanswered. For example, the radiobiologic consequences of altered time-dose fractionation are not completely understood. Also, because there may be a much greater ability to trade off dose heterogeneity in the target vs. avoidance of normal critical structures with IMRT compared with traditional RT techniques, conventional radiation oncology planning principles are challenged. All in all, this new process of planning and treatment delivery has significant potential for improving the therapeutic ratio and reducing toxicity. Also, although inefficient currently, it is expected that IMRT, when fully developed, will improve the overall efficiency with which external beam RT can be planned and delivered, and thus will potentially lower costs. CONCLUSION: Recommendations in the areas pertinent to IMRT, including dose-calculation algorithms, acceptance testing, commissioning and quality assurance, facility planning and radiation safety, and target volume and dose specification, are presented. Several of the areas in which future research and development are needed are also indicated. These broad recommendations are intended to be both technical and advisory in nature, but the ultimate responsibility for clinical decisions pertaining to the implementation and use of IMRT rests with the radiation oncologist and radiation oncology physicist. This is an evolving field, and modifications of these recommendations are expected as new technology and data become available.

Algorithms↗
PubMed1997

Consensus conferences in critical care medicine. Methodologies and impact.

Consensus conferences for the purposes of producing practice guidelines are occurring with increasing frequency both nationally and internationally. The international collaboration of national sciences in these efforts could have a dramatic impact on international standards of care. Too little emphasis is given to conference evaluations in terms of validity of methods, quality of recommendations, and influence on clinical practice and patient outcome. This article provides an overview of consensus methods used to produce guidelines in critical care. It also discusses the strengths and weaknesses of these methods, and how these may influence consensus guidelines. Finally, a brief overview of theoretically sound methods that can serve as benchmarks to evaluate current methods, and the bases for the development of improved methods is provided.

Consensus Statements as Topic↗
PubMed1992

Asymptomatic impacted teeth in edentulous jaws undergoing preprosthetic surgery. A long-term evaluation.

A long-term evaluation is made of 15 patients with asymptomatic impacted teeth in edentulous jaws. Seventeen impacted teeth in 15 patients were recorded and analysed. They were located in denture-bearing areas and in areas undergoing preprosthetic surgery. All patients, except one lost after 1-year period, were followed clinically and radiographically for 1 to 10 years with an average of 4 years. The asymptomatic impacted teeth in edentulous jaws embedded in bone or covered with mucosa did not cause any problem to the patients. The findings of this study support the view that removal of asymptomatic impacted teeth in denture-bearing areas, or in areas undergoing preprosthetic surgery, is unnecessary as long as the integrity of the covering tissues is preserved. A policy or radiological surveillance is recommended.

Adult↗
PubMed2003

Restless legs syndrome: diagnostic criteria, special considerations, and epidemiology. A report from the restless legs syndrome diagnosis and epidemiology workshop at the National Institutes of Health.

BACKGROUND: Restless legs syndrome is a common yet frequently undiagnosed sensorimotor disorder. In 1995, the International Restless Legs Syndrome Study Group developed standardized criteria for the diagnosis of restless legs syndrome. Since that time, additional scientific scrutiny and clinical experience have led to a better understanding of the condition. Modification of the criteria is now necessary to better reflect that increased body of knowledge, as well as to clarify slight confusion with the wording of the original criteria. SETTING: The restless legs syndrome diagnostic criteria and epidemiology workshop at the National Institutes of Health. PARTICIPANTS: Members of the International Restless Legs Syndrome Study Group and authorities on epidemiology and the design of questionnaires and scales. OBJECTIVE: To modify the current criteria for the diagnosis of restless legs syndrome, to develop new criteria for the diagnosis of restless legs syndrome in the cognitively impaired elderly and in children, to create standardized criteria for the identification of augmentation, and to establish consistent questions for use in epidemiology studies. RESULTS: The essential diagnostic criteria for restless legs syndrome were developed and approved by workshop participants and the executive committee of the International Restless Legs Syndrome Study Group. Criteria were also developed and approved for the additional aforementioned groups.

Age Factors↗
PubMed1992

The Consensus Development Program. Detecting changes in medical practice following a consensus conference on the treatment of prostate cancer.

The treatment of prostate cancer was reviewed at a U.S. National Institutes of Health Consensus Development Conference in June 1987. Data from the U.S. National Cancer Institute's Surveillance, Epidemiology, and End Results tumor registries were analyzed and showed that the proportion of eligible prostate cancer patients receiving the recommended therapies did not increase at a faster rate after the conference than before.

Aged↗