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PubMed1991

The epistemology and ethics of consensus: uses and misuses of 'ethical' expertise.

In this paper I examine the epistemology and ethics of consensus, focusing on the ways in which decision makers use/misuse ethical expertise. The major questions I raise and tentative answers I give are the following: First, are the 'experts' really experts? My tentative answer is that they are bona fide experts who often represent specific interest groups. Second, is the experts' authority merely epistemological or is it also ethical? My tentative answer is that the experts' authority consists not only in their command over specific matters of fact and/or value, but also in their ability to achieve 'consensus' about what is 'true'/'false', or 'right'/'wrong'. Third, should the authority of expertise be limited? My tentative answer is that it should be limited in the area of facts but especially in the area of values. Persons who are ethics 'experts' must be particularly careful to practice an ethics of persuasion rather than an ethics of compulsion. Their role is not to force their group consensus upon decision makers' individual moral perceptions and deliberations; rather it is to help decision makers come to their own conclusions about what they ought to do.

Advisory Committees↗
PubMed1996

Classification and grading of gastritis. The updated Sydney System. International Workshop on the Histopathology of Gastritis, Houston 1994.

The Sydney System for the classification of gastritis emphasized the importance of combining topographical, morphological, and etiological information into a schema that would help to generate reproducible and clinically useful diagnoses. To reappraise the Sydney System 4 years after its introduction, a group of gastrointestinal pathologists from various parts of the world met in Houston, Texas, in September 1994. The aims of the workshop were (a) to establish an agreed terminology of gastritis; (b) to identify, define, and attempt to resolve some of the problems associated with the Sydney System. This article introduces the Sydney System as it was revised at the Houston Gastritis Workshop and represents the consensus of the participants. Overall, the principles and grading of the Sydney System were only slightly modified, the grading being aided by the provision of a visual analogue scale. The terminology of the final classification has been improved to emphasize the distinction between the atrophic and nonatrophic stomach; the names used for each entity were selected because they are generally acceptable to both pathologists and gastroenterologists. In addition to the main categories and atrophic and nonatrophic gastritis, the special or distinctive forms are described and their respective diagnostic criteria are provided. The article includes practical guidelines for optimal biopsy sampling of the stomach, for the use of the visual analogue scales for grading the histopathologic features, and for the formulation of a comprehensive standardized diagnosis. A glossary of gastritis-related terms as used in this article is provided.

Animals↗
PubMedDate not supplied

Asia regional meeting of the International Working Group for the Harmonization of Dementia Drug Guidelines: meeting report.

This meeting successfully catalyzed the establishment of a new working alliance between clinical dementia researches in Asia and identified common goals for the group to attain. The progress toward achieving these goals will be examined at the next Asia regional meeting, which is being planned for October 2002 in Beijing, China. This new regional working group will work with the IWG to overcome the existing methodological and regulatory obstacles impeding dementia treatment trials in Asia.

Aged↗
PubMed1999

Interferon-alpha treatment of chronic hepatitis B in childhood: a consensus advice based on experience in European children.

BACKGROUND: The efficacy of interferon (IFN) in children with chronic hepatitis B has been evaluated in randomized controlled trials over the past decade, but recommendations for treatment based on this experience have not been published yet. The purpose of this workshop, held in Madrid in October 1997, was to provide pediatricians with guidelines for practical use of IFN in hepatitis B. METHODS: Eighteen European pediatricians and hepatologists agreed to report and discuss their experience on 1,122 treated children, 40% of whom were considered responders. RESULTS: Agreement was obtained on the following main items: 1) rationale for treatment is to accelerate hepatitis B early antigen (HBeAg) clearance in a subgroup of patients; 2) candidates for treatment are children with HBeAg and HBV DNA positivity, with low-intermediate HBV DNA levels and abnormal alanine aminotransferase values, aged 2 years or more; 3) IFN is contraindicated in children with decompensated liver disease, cytopenia, severe renal or cardiac disorders, and autoimmune disease; 4) the standard treatment regimen is 5 mU/m2 thrice weekly for 6 months. Retreatment in nonresponders is not indicated. CONCLUSIONS: A consensus was obtained on the use of IFN in children with hepatitis B, based on its short-term efficacy. The long-term clinical and virological effects of the drug, however, remain to be evaluated.

Adolescent↗
PubMed2001

The management of irritable bowel syndrome: a European, primary and secondary care collaboration.

OBJECTIVE: To develop recommendations for the diagnosis and management of irritable bowel syndrome for European doctors delivering primary care. These recommendations can be adapted by local medical groups according to their language, custom and health-care systems. METHODS: Twenty-one general practitioners and gastroenterologists from Europe attended a workshop planned by a steering committee. After a state-of-the-art symposium, four working groups considered the following aspects of irritable bowel syndrome management: what to tell the patient, diagnosis, non-medical treatment and psychosocial management. Current and future drug management was reviewed by the steering committee. The resulting recommendations were considered at two plenary sessions during the meeting, and by circulation of the material during development of the manuscript. RESULTS: The process permitted a unique dialogue between general practitioners and gastroenterologists, in which it was necessary to reconcile the specialists' emphasis on thoroughness with the practical, epidemiological and economic realities of primary care. Despite this dichotomy, consensus was achieved. CONCLUSIONS: European general practitioners and gastroenterologists have produced recommendations that emphasize education of the patient, a positive symptom-based diagnosis, diet and lifestyle advice, psychological support and a critical analysis of current specific psychological and pharmacological treatments.

Colonic Diseases, Functional↗
PubMed1998

Clinical efficacy of perioperative nutrition support.

Despite a large number of published randomized prospective controlled clinical trials the indications for perioperative parenteral and enteral nutrition support remain controversial. This article reviews the reports of several recently published consensus conference reports and prospective randomized controlled trials evaluating nutritional therapy in surgical patients.

Consensus Statements as Topic↗
PubMed2004

Blood pressure measurement and the guidelines: a proposed new algorithm for the diagnosis of hypertension.

Current hypertension guidelines continue to base management decisions on the office BP as recorded by mercury sphygmomanometry. The imminent disappearance of mercury from the workplace for environmental and safety reasons provides an opportunity to re-assess how a diagnosis of hypertension is made. There are now several validated, automated BP recording devices available to replace mercury sphygmomanometers in the office setting. Self/home and 24-hour ambulatory BP monitoring should now become an integral part of the diagnostic algorithm for hypertension in view of their superior ability to predict clinical outcomes when compared to traditional office BP measurements.

Algorithms↗
PubMed2003

2001 SCCM/ESICM/ACCP/ATS/SIS International Sepsis Definitions Conference.

OBJECTIVE: In 1991, the American College of Chest Physicians (ACCP) and the Society of Critical Care Medicine (SCCM) convened a "Consensus Conference," the goals of which were "to provide a conceptual and a practical framework to define the systemic inflammatory response to infection, which is a progressive injurious process that falls under the generalized term 'sepsis' and includes sepsis-associated organ dysfunction as well." The general definitions introduced as a result of that conference have been widely used in practice and have served as the foundation for inclusion criteria for numerous clinical trials of therapeutic interventions. Nevertheless, there has been an impetus from experts in the field to modify these definitions to reflect our current understanding of the pathophysiology of these syndromes. DESIGN: Several North American and European intensive care societies agreed to revisit the definitions for sepsis and related conditions. This conference was sponsored by the SCCM, The European Society of Intensive Care Medicine (ESICM), The American College of Chest Physicians (ACCP), the American Thoracic Society (ATS), and the Surgical Infection Society (SIS). METHODS: The conference was attended by 29 participants from Europe and North America. In advance of the conference, five subgroups were formed to evaluate the following areas: signs and symptoms of sepsis, cell markers, cytokines, microbiologic data, and coagulation parameters. The subgroups corresponded electronically before the conference and met in person during the conference. A spokesperson for each group presented the deliberation of each group to all conference participants during a plenary session. A writing committee was formed at the conference and developed the current article based on executive summary documents generated by each group and the plenary group presentations. The present article serves as the final report of the 2001 International Sepsis Definitions Conference. CONCLUSION: This document reflects a process whereby a group of experts and opinion leaders revisited the 1992 sepsis guidelines and found that apart from expanding the list of signs and symptoms of sepsis to reflect clinical bedside experience, no evidence exists to support a change to the definitions. This lack of evidence serves to underscore the challenge still present in diagnosing sepsis in 2003 for clinicians and researchers and also provides the basis for introducing PIRO as a hypothesis-generating model for future research.

Humans↗
PubMed2005

The international sepsis forum consensus conference on definitions of infection in the intensive care unit.

OBJECTIVE: To develop definitions of infection that can be used in clinical trials in patients with sepsis. CONTEXT: Infection is a key component of the definition of sepsis, yet there is currently no agreement on the definitions that should be used to identify specific infections in patients with sepsis. Agreeing on a set of valid definitions that can be easily implemented as part of a clinical trial protocol would facilitate patient selection, help classify patients into prospectively defined infection categories, and therefore greatly reduce variability between treatment groups. DESIGN AND METHODS: Experts in infectious diseases, clinical microbiology, and critical care medicine were recruited and allocated specific infection sites. They carried out a systematic literature review and used this, and their own experience, to prepare a draft definition. At a subsequent consensus conference, rapporteurs presented the draft definitions, and these were then refined and improved during discussion. Modifications were circulated electronically and subsequently agreed upon as part of an iterative process until consensus was reached. RESULT: Consensus definitions of infection were developed for the six most frequent causes of infections in septic patients: pneumonia, bloodstream infections (including infective endocarditis), intravascular catheter-related sepsis, intra-abdominal infections, urosepsis, and surgical wound infections. CONCLUSIONS: We have described standardized definitions of the common sites of infection associated with sepsis in critically ill patients. Use of these definitions in clinical trials should help improve the quality of clinical research in this field.

Clinical Trials as Topic↗
PubMed2006

Dysfunctional tear syndrome: a Delphi approach to treatment recommendations.

PURPOSE: To develop current treatment recommendations for dry eye disease from consensus of expert advice. METHODS: Of 25 preselected international specialists on dry eye, 17 agreed to participate in a modified, 2-round Delphi panel approach. Based on available literature and standards of care, a survey was presented to each panelist. A two-thirds majority was used for consensus building from responses obtained. Treatment algorithms were created. Treatment recommendations for different types and severity levels of dry eye disease were the main outcome. RESULTS: A new term for dry eye disease was proposed: dysfunctional tear syndrome (DTS). Treatment recommendations were based primarily on patient symptoms and signs. Available diagnostic tests were considered of secondary importance in guiding therapy. Development of algorithms was based on the presence or absence of lid margin disease and disturbances of tear distribution and clearance. Disease severity was considered the most important factor for treatment decision-making and was categorized into 4 levels. Severity was assessed on the basis of tear substitute requirements, symptoms of ocular discomfort, and visual disturbance. Clinical signs present in lids, tear film, conjunctiva, and cornea were also used for categorization of severity. Consensus was reached on treatment algorithms for DTS with and without concurrent lid disease. CONCLUSION: Panelist opinion relied on symptoms and signs (not tests) for selection of treatment strategies. Therapy is chosen to match disease severity and presence versus absence of lid margin disease or tear distribution and clearance disturbances.

Algorithms↗
PubMed2004

An illustrated consensus on the classification of pancreatic intraepithelial neoplasia and intraductal papillary mucinous neoplasms.

Invasive pancreatic ductal adenocarcinoma is an almost uniformly fatal disease. Several distinct noninvasive precursor lesions can give rise to invasive adenocarcinoma of the pancreas, and the prevention, detection, and treatment of these noninvasive lesions offers the potential to cure early pancreatic cancers. Noninvasive precursors of invasive ductal adenocarcinoma of the pancreas include pancreatic intraepithelial neoplasias (PanINs), intraductal papillary mucinous neoplasms (IPMNs), and mucinous cystic neoplasms. Diagnostic criteria, including a distinct ovarian-type stroma, and a consistent nomenclature are well established for mucinous cystic neoplasms. By contrast, consistent nomenclatures and diagnostic criteria have been more difficult to establish for PanINs and IPMNs. Because both PanINs and IPMNs consist of intraductal neoplastic proliferations of columnar, mucin-containing cells with a variable degree of papilla formation, the distinction between these two classes of precursor lesions remains problematic. Thus, considerable ambiguities still exist in the classification of noninvasive neoplasms in the pancreatic ducts. A meeting of international experts on precursor lesions of pancreatic cancer was held at The Johns Hopkins Hospital from August 18 to 19, 2003. The purpose of this meeting was to define an international acceptable set of diagnostic criteria for PanINs and IPMNs and to address a number of ambiguities that exist in the previously reported classification systems for these neoplasms. We present a consensus classification of the precursor lesions in the pancreatic ducts, PanINs and IPMNs.

Carcinoma in Situ↗
PubMed2007

Definitions for haemophilia prophylaxis and its outcomes: the Canadian consensus study.

The creation of acceptable standard definitions for terms used in the care and assessment of haemophilia patients has become increasingly important, as a growing number of international clinical studies have been initiated. The Delphi approach has been used in health research to reach consensus in large groups and can be used to develop definitions by using several iterations of surveys eliciting opinions from specialists in the field. Three consecutive surveys were designed based on the Delphi approach and distributed to specialist physicians, nurses and physiotherapists in order to develop definitions for seven haemophilia terms: 'primary prophylaxis', 'secondary prophylaxis', 'target joint', 'joint bleed', 'significant soft-tissue bleed', 'superficial soft-tissue bleed' and 'mucosal bleed'. Suggestions were solicited, compiled into a subsequent survey and fed back to the group to rank-order the importance of each suggested component of the definition. Final definitions were created using the top-ranked suggestions and sent back to the experts for approval. Five of the seven terms were highly endorsed with greater than 90% agreement. Some differences in agreement were found when analysed by profession. Haemophilia terms were successfully defined using the Delphi approach. Further refinement from members of the international haemophilia community will ensure that comprehensive standard definitions can be used in multicentre studies in the future.

Canada↗