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1.
J Can Assoc Gastroenterol ; 3(1): 4-16, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-34169223

RESUMEN

BACKGROUND: The Global Rating Scale (GRS) is a web-based self-assessment quality improvement tool used to identify gaps in health care, change the focus to patient-centred care and standardize care. There are four levels of achievement ranging from basic-(D) to excellent-(A) service delivery. The goal was to develop a GRS for inflammatory bowel disease (IBD) to improve the quality of care for patients on a system level. METHODS: The IBD GRS was developed through an iterative process and modeled upon the successful endoscopy GRS programs in the United Kingdom and Canada. Dimensions, items and statements were drafted based on expert opinions, patient-informed quality indicators and best available evidence, then reviewed and modified by a core committee. A working group of IBD and GRS experts voted in-person to establish consensus on the inclusion and quality of statements. RESULTS: Two dimensions (Clinical Quality and Quality of Patient Experience), 10 items and 89 statements made up the IBD GRS. There was a 100% response rate for each of the 40 votes for statements in the IBD GRS. All statements within each level received a mean rating score between four (agree) and five (strongly agree). Revisions agreed upon during the voting process were incorporated into the IBD GRS. Group consensus was achieved on the inclusion of statements, and 10 items were selected as standards within the two dimensions. CONCLUSIONS: We have developed the first IBD GRS with the aim of improving quality of care through ongoing evaluations and improvements by health care teams, focusing on patient-centred care.

2.
Gastrointest Endosc ; 90(1): 27-34, 2019 07.
Artículo en Inglés | MEDLINE | ID: mdl-31122745

RESUMEN

This White Paper shares guidance on the important principles of training endoscopy teachers, the focus of an American Society for Gastrointestinal Endoscopy (ASGE)/World Endoscopy Organization Program for Endoscopic Teachers and Leaders of Endoscopic Training held at the ASGE Institute for Training and Technology. Key topics included the need for institutional support and continuous skills development, the importance of consensus and consistency in content and approach to teaching, the role of conscious competence and content breakdown into discreet steps in effective teaching, defining roles of supervisors versus instructors to ensure teaching consistency across instructors, identification of learning environment factors and barriers impacting effective teaching, and individualized training that incorporates effective feedback and adapts with learner proficiency. Incorporating simulators into endoscopy teaching, applying good endoscopy teaching principles outside the endoscopy room, key principles of hands-on training, and effective use of simulators and models in achieving specific learning objectives were demonstrated with rotations through hands-on simulator stations as part of the program. A discussion of competency-based assessment was followed by live sessions in which attendees applied endoscopy teaching principles covered in the program. Conclusions highlighted the need for the following: formal training of endoscopy teachers to a level of conscious competence, incorporation of formal training structures into existing training curricula, intentional teaching preparation, feedback to trainees and instructors alike aimed at improving performance, and competency-based trainee assessment. The article is intended to help motivate individuals who play a role in training other endoscopists to develop their teaching abilities, promote discussions about endoscopy training, and engage both endoscopy trainers and trainees in a highly rewarding learning process that is in the best interest of patients.


Asunto(s)
Competencia Clínica , Endoscopía Gastrointestinal/educación , Gastroenterología/educación , Entrenamiento Simulado , Formación del Profesorado , Curriculum , Retroalimentación Formativa , Humanos , Enseñanza/educación
4.
Med Decis Making ; 37(2): 253-263, 2017 02.
Artículo en Inglés | MEDLINE | ID: mdl-27681989

RESUMEN

BACKGROUND: Median wait times for gastroenterology services in Canada exceed consensus-recommended targets and have worsened substantially over the past decade. Meanwhile, efforts to control colorectal cancer have shifted their focus to screening asymptomatic, average-risk individuals. Along with increasing prevalence of colorectal cancer due to an aging population, screening programs are expected to add substantially to the existing burden on colonoscopy services, and create competition for limited services among individuals of varying risk. Failure to understand the effects of operational programmatic screening decisions may cause unintended harm to both screening participants and higher-risk patients, make inefficient use of limited health care resources, and ultimately hinder a program's success. METHODS: We present a new simulation model (Simulation of Cancer Outcomes for Planning Exercises, or SCOPE) for colorectal cancer screening which, unlike many other colorectal cancer screening models, reflects the effects of competition for limited colonoscopy services between patient groups and can be used to guide planning to ensure adequate resource allocation. We include verification and validation results for the SCOPE model. RESULTS: A discrete event simulation model was developed based on an epidemiological representation of colorectal cancer in a sample population. Colonoscopy service and screening modules were added to allow observation of screening scenarios and resource considerations. The model reproduces population-based data on prevalence of colorectal cancer by stage, and mortality by cause of death, age, and sex, and attendant demand and wait times for colonoscopy services. CONCLUSIONS: The study model differs from existing screening models in that it explicitly considers the colonoscopy resource implications of screening activities and the impact of constrained resources on screening effectiveness.


Asunto(s)
Neoplasias Colorrectales/diagnóstico , Detección Precoz del Cáncer/estadística & datos numéricos , Competencia Económica/estadística & datos numéricos , Asignación de Recursos para la Atención de Salud/organización & administración , Factores de Edad , Anciano , Canadá , Colonoscopía , Neoplasias Colorrectales/mortalidad , Neoplasias Colorrectales/patología , Simulación por Computador , Femenino , Asignación de Recursos para la Atención de Salud/economía , Humanos , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Reproducibilidad de los Resultados , Factores Sexuales , Listas de Espera
5.
Can J Gastroenterol Hepatol ; 2016: 6091571, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27446852

RESUMEN

Olmesartan, an angiotensin II receptor antagonist used to treat hypertension, is associated with few adverse effects. Here, a case of severe sprue-like enteropathy and acute kidney injury is described in a 68-year-old male taking olmesartan for 3-4 years. He presented to hospital with a five-week history of diarrhea, vomiting, and a 20 lb weight loss. Anti-TTG was negative with a normal IgA. Biopsies of the distal duodenum and duodenal cap revealed marked blunting of the villi with near complete villous atrophy of the biopsies from the bulb. There was an increase in intraepithelial lymphocytes as well as neutrophils in the surface epithelium. The patient's diarrhea improved upon discontinuation of olmesartan and he returned to his previous weight. Repeat endoscopy four months later demonstrated complete resolution of inflammatory change with normal villous architecture. Long-term olmesartan use is associated with severe sprue-like enteropathy. The mechanism of intestinal injury is unknown. Duodenal biopsy results may mimic other enteropathies such as celiac disease. Physicians should consider medications as potential etiologies of enteropathy.


Asunto(s)
Antihipertensivos/efectos adversos , Esprue Colágeno/patología , Diarrea/patología , Duodeno/patología , Imidazoles/efectos adversos , Tetrazoles/efectos adversos , Anciano , Atrofia , Biopsia , Esprue Colágeno/inducido químicamente , Diarrea/inducido químicamente , Humanos , Hipertensión/tratamiento farmacológico , Masculino , Vómitos/inducido químicamente , Vómitos/patología , Pérdida de Peso
6.
Best Pract Res Clin Gastroenterol ; 30(3): 409-19, 2016 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-27345649

RESUMEN

Endoscopy training has traditionally been accomplished by an informal process in the endoscopy unit that parallels apprenticeship training seen in other areas of professional education. Subsequent to an audit, a series of interventions were implemented in the English National Health Service to support both service delivery and to improve endoscopy training. The resulting training centers deliver a variety of hands-on endoscopy courses, established in parallel with the roll out of a colon cancer screening program that monitors and documents quality outcomes among endoscopists. The program developed a 'training the trainer' module that subsequently became known as the Training the Colonoscopy Trainer course (TCT). Several years after its implementation, colonoscopy quality outcomes in the UK have improved substantially. The core TCT program has spread to other countries with demonstration of a marked impact on endoscopy training and performance. The aim of this chapter is to describe the principles that underlie effective endoscopy training in this program using the TCT as an example. While the review focuses on the specific example of colonoscopy training, the approach is generic to the teaching of any technical skill; it has been successfully transferred to the teaching of laparoscopic surgery as well as other endoscopic techniques.


Asunto(s)
Competencia Clínica , Educación de Postgrado en Medicina/normas , Endoscopía Gastrointestinal/educación , Retroalimentación , Colonoscopía/educación , Detección Precoz del Cáncer , Humanos , Programas Nacionales de Salud/organización & administración
8.
Lancet ; 386(10006): 1825-34, 2015 Nov 07.
Artículo en Inglés | MEDLINE | ID: mdl-26342731

RESUMEN

BACKGROUND: Conventional management of Crohn's disease features incremental use of therapies. However, early combined immunosuppression (ECI), with a TNF antagonist and antimetabolite might be a more effective strategy. We compared the efficacy of ECI with that of conventional management for treatment of Crohn's disease. METHODS: In this open-label cluster randomised controlled trial (Randomised Evaluation of an Algorithm for Crohn's Treatment, REACT), we included community gastroenterology practices from Belgium and Canada that were willing to be assigned to either of the study groups, participate in all aspects of the study, and provide data on up to 60 patients with Crohn's disease. These practices were randomly assigned (1:1) to either ECI or conventional management. The computer-generated randomisation was minimised by country and practice size. Up to 60 consecutive adult patients were assessed within practices. Patients who were aged 18 years or older; documented to have Crohn's disease; able to speak or understand English, French, or Dutch; able to access a telephone; and able to provide written informed consent were followed up for 2 years. The primary outcome was the proportion of patients in corticosteroid-free remission (Harvey-Bradshaw Index score ≤ 4) at 12 months at the practice level. This trial is registered with ClinicalTrials.gov, number NCT01030809. FINDINGS: This study took place between March 15, 2010, and Oct 1, 2013. Of the 60 practices screened, 41 were randomly assigned to either ECI (n=22) or conventional management (n=19). Two practices (one in each group) discontinued because of insufficient resources. 921 (85%) of the 1084 patients at ECI practices and 806 (90%) of 898 patients at conventional management practices completed 12 months follow-up and were included in an intention-to-treat analysis. The 12 month practice-level remission rates were similar at ECI and conventional management practices (66·0% [SD 14·0] and 61·9% [16·9]; adjusted difference 2·5%, 95% CI -5·2% to 10·2%, p=0·5169). The 24 month patient-level composite rate of major adverse outcomes defined as occurrence of surgery, hospital admission, or serious disease-related complications was lower at ECI practices than at conventional management practices (27·7% and 35·1%, absolute difference [AD] 7·3%, hazard ratio [HR]: 0·73, 95% CI 0·62 to 0·86, p=0·0003). There were no differences in serious drug-related adverse events. INTERPRETATION: Although ECI was not more effective than conventional management for controlling Crohn's disease symptoms, the risk of major adverse outcomes was lower. The latter finding should be considered hypothesis-generating for future trials. ECI was not associated with an increased risk of serious drug-related adverse events or mortality. FUNDING: AbbVie Pharmaceuticals.


Asunto(s)
Enfermedad de Crohn/terapia , Terapia de Inmunosupresión/métodos , Adalimumab/administración & dosificación , Adalimumab/uso terapéutico , Adulto , Antimetabolitos/administración & dosificación , Antimetabolitos/uso terapéutico , Azatioprina/administración & dosificación , Azatioprina/uso terapéutico , Quimioterapia Combinada , Femenino , Humanos , Infliximab/administración & dosificación , Infliximab/uso terapéutico , Masculino , Mercaptopurina/administración & dosificación , Mercaptopurina/uso terapéutico , Metotrexato/administración & dosificación , Metotrexato/uso terapéutico , Resultado del Tratamiento , Factor de Necrosis Tumoral alfa/antagonistas & inhibidores
9.
Gastroenterology ; 146(3): 681-688.e1, 2014 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-24269926

RESUMEN

BACKGROUND & AIMS: Methotrexate and infliximab are effective therapies for Crohn's disease (CD). In the combination of maintenance methotrexate-infliximab trial, we evaluated the potential superiority of combination therapy over infliximab alone. METHODS: In a 50-week, double-blind, placebo-controlled trial, we compared methotrexate and infliximab with infliximab alone in 126 patients with CD who had initiated prednisone induction therapy (15-40 mg/day) within the preceding 6 weeks. Patients were assigned randomly to groups given methotrexate at an initial weekly dose of 10 mg, escalating to 25 mg/week (n = 63), or placebo (n = 63). Both groups received infliximab (5 mg/kg of body weight) at weeks 1, 3, 7, and 14, and every 8 weeks thereafter. Prednisone was tapered, beginning at week 1, and discontinued no later than week 14. The primary outcome was time to treatment failure, defined as a lack of prednisone-free remission (CD Activity Index, <150) at week 14 or failure to maintain remission through week 50. RESULTS: Patients' baseline characteristics were similar between groups. By week 50, the actuarial rate of treatment failure was 30.6% in the combination therapy group compared with 29.8% in the infliximab monotherapy group (P = .63; hazard ratio, 1.16; 95% confidence interval, 0.62-2.17). Prespecified subgroup analyses failed to show a benefit in patients with short disease duration or an increased level of C-reactive protein. No clinically meaningful differences were observed in secondary outcomes. Combination therapy was well tolerated. CONCLUSIONS: The combination of infliximab and methotrexate, although safe, was no more effective than infliximab alone in patients with CD receiving treatment with prednisone. ClincialTrials.gov number, NCT00132899.


Asunto(s)
Anticuerpos Monoclonales/uso terapéutico , Enfermedad de Crohn/tratamiento farmacológico , Metotrexato/uso terapéutico , Adulto , Proteína C-Reactiva/metabolismo , Enfermedad de Crohn/sangre , Método Doble Ciego , Quimioterapia Combinada , Femenino , Humanos , Infliximab , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Prednisona/uso terapéutico , Resultado del Tratamiento
10.
Can J Gastroenterol ; 27(2): 74-82, 2013 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-23472242

RESUMEN

BACKGROUND: Increasing use of gastrointestinal endoscopy, particularly for colorectal cancer screening, and increasing emphasis on health care quality highlight the need for endoscopy facilities to review the quality of the service they offer. OBJECTIVE: To adapt the United Kingdom Global Rating Scale (UK-GRS) to develop a web-based and patient-centred tool to assess and improve the quality of endoscopy services provided. METHODS: Based on feedback from 22 sites across Canada that completed the UK endoscopy GRS, and integrating results of the Canadian consensus on safety and quality indicators in endoscopy and other Canadian consensus reports, a working group of endoscopists experienced with the GRS developed the GRS-Canada (GRS-C). RESULTS: The GRS-C mirrors the two dimensions (clinical quality and quality of the patient experience) and 12 patient-centred items of the UK-GRS, but was modified to apply to Canadian health care infrastructure, language and current practice. Each item is assessed by a yes/no response to eight to 12 statements that are divided into levels graded D (basic) through A (advanced). A core team consisting of a booking clerk, charge nurse and the physician responsible for the unit is recommended to complete the GRS-C twice yearly. CONCLUSION: The GRS-C is intended to improve endoscopic services in Canada by providing endoscopy units with a straightforward process to review the quality of the service they provide.


Asunto(s)
Colonoscopía/normas , Endoscopía Gastrointestinal/normas , Calidad de la Atención de Salud , Canadá , Neoplasias Colorrectales/diagnóstico , Atención a la Salud/métodos , Atención a la Salud/normas , Humanos , Internet , Tamizaje Masivo/métodos , Tamizaje Masivo/normas , Atención Dirigida al Paciente/métodos , Atención Dirigida al Paciente/normas , Mejoramiento de la Calidad , Indicadores de Calidad de la Atención de Salud
11.
Can J Gastroenterol ; 26(1): 17-31, 2012 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-22308578

RESUMEN

BACKGROUND: Increasing use of gastrointestinal endoscopy, particularly for colorectal cancer screening, and increasing emphasis on health care quality, highlight the need for clearly defined, evidence-based processes to support quality improvement in endoscopy. OBJECTIVE: To identify processes and indicators of quality and safety relevant to high-quality endoscopy service delivery. METHODS: A multidisciplinary group of 35 voting participants developed recommendation statements and performance indicators. Systematic literature searches generated 50 initial statements that were revised iteratively following a modified Delphi approach using a web-based evaluation and voting tool. Statement development and evidence evaluation followed the AGREE (Appraisal of Guidelines, REsearch and Evaluation) and GRADE (Grading of Recommendations, Assessment, Development and Evaluation) guidelines. At the consensus conference, participants voted anonymously on all statements using a 6-point scale. Subsequent web-based voting evaluated recommendations for specific, individual quality indicators, safety indicators and mandatory endoscopy reporting fields. Consensus was defined a priori as agreement by 80% of participants. RESULTS: Consensus was reached on 23 recommendation statements addressing the following: ethics (statement 1: agreement 100%), facility standards and policies (statements 2 to 9: 90% to 100%), quality assurance (statements 10 to 13: 94% to 100%), training, education, competency and privileges (statements 14 to 19: 97% to 100%), endoscopy reporting standards (statements 20 and 21: 97% to 100%) and patient perceptions (statements 22 and 23: 100%). Additionally, 18 quality indicators (agreement 83% to 100%), 20 safety indicators (agreement 77% to 100%) and 23 recommended endoscopy-reporting elements (agreement 91% to 100%) were identified. DISCUSSION: The consensus process identified a clear need for high-quality clinical and outcomes research to support quality improvement in the delivery of endoscopy services. CONCLUSIONS: The guidelines support quality improvement in endoscopy by providing explicit recommendations on systematic monitoring, assessment and modification of endoscopy service delivery to yield benefits for all patients affected by the practice of gastrointestinal endoscopy.


Asunto(s)
Endoscopía Gastrointestinal/normas , Indicadores de Calidad de la Atención de Salud/normas , Instituciones de Atención Ambulatoria/normas , Canadá , Competencia Clínica/normas , Endoscopía Gastrointestinal/educación , Humanos , Consentimiento Informado/normas , Alta del Paciente/normas
12.
Can J Gastroenterol ; 26(2): 71-8, 2012 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-22312605

RESUMEN

INTRODUCTION: The importance of quality indicators has become increasingly recognized in gastrointestinal endoscopy. Patient safety requires the identification and monitoring of occurrences associated with harm or the potential for harm. The identification of relevant indicators of safety compromise is, therefore, a critical element that is key to the effective implementation of endoscopy quality improvement programs. OBJECTIVE: To identify key indicators of safety compromise in gastrointestinal endoscopy. METHODS: The Canadian Association of Gastroenterology Safety and Quality Indicators in Endoscopy Consensus Group was formed to address issues of quality in endoscopy. A subcommittee was formed to identify key safety indicators. A systematic literature review was undertaken, and articles pertinent to safety in endoscopy were identified and reviewed. All complications and measures used to document safety were recorded. From this, a preliminary list of 16 indicators was compiled and presented to the 35-person consensus group during a three-day meeting. A revised list of 20 items was subsequently put to the consensus group for vote for inclusion on the final list of safety indicators. Items were retained only if the consensus group highly agreed on their importance. RESULTS: A total of 19 indicators of safety compromise were retained and grouped into the three following categories: medication-related - the need for CPR, use of reversal agents, hypoxia, hypotension, hypertension, sedation doses in patients older than 70 years of age, allergic reactions and laryngospasm/bronchospasm; procedure-related early - perforation, immediate postpolypectomy bleeding, need for hospital admission or transfer to emergency department from the gastroenterology unit, instrument impaction, severe persistent abdominal pain requiring evaluation proven to not be perforation; and procedure-related delayed - death within 30 days of procedure, 14-day unplanned hospitalization, 14-day unplanned contact with a health provider, gastrointestinal bleeding within 14 days of procedure, infection or symptomatic metabolic complications. CONCLUSIONS: The 19 indicators of safety compromise in endoscopy, identified by a rigorous, evidence-based consensus process, provide clear outcomes to be recorded by all facilities as part of their continuing quality improvement programs.


Asunto(s)
Endoscopía Gastrointestinal/normas , Seguridad del Paciente , Mejoramiento de la Calidad , Indicadores de Calidad de la Atención de Salud , Canadá , Endoscopía Gastrointestinal/efectos adversos , Endoscopía Gastrointestinal/métodos , Humanos , Garantía de la Calidad de Atención de Salud , Medición de Riesgo , Factores de Riesgo
13.
Can J Gastroenterol ; 25(1): 13-20, 2011 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-21258663

RESUMEN

BACKGROUND: Point-of-care practice audits allow documentation of procedural outcomes to support quality improvement in endoscopic practice. OBJECTIVE: To evaluate a colonoscopists' practice audit tool that provides point-of-care data collection and peer-comparator feedback. METHODS: A prospective, observational colonoscopy practice audit was conducted in academic and community endoscopy units for unselected patients undergoing colonoscopy. Anonymized colonoscopist, patient and practice data were collected using touchscreen smartphones with automated data upload for data analysis and review by participants. The main outcome measures were the following colonoscopy quality indicators: colonoscope insertion and withdrawal times, bowel preparation quality, sedation, immediate complications and polypectomy, and biopsy rates. RESULTS: Over a span of 16 months, 62 endoscopists reported on 1279 colonoscopy procedures. The mean cecal intubation rate was 94.9% (10th centile 84.2%). The mean withdrawal time was 8.8 min and, for nonpolypectomy colonoscopies, 41.9% of colonoscopists reported a mean withdrawal time of less than 6 min. Polypectomy was performed in 37% of colonoscopies. Independent predictors of polypectomy included the following: endoscopy unit type, patient age, interval since previous colonoscopy, bowel preparation quality, stable inflammatory bowel disease, previous colon polyps and withdrawal time. Withdrawal times of less than 6 min were associated with lower polyp removal rates (mean difference -11.3% [95% CI -2.8% to -19.9%]; P=0.01). DISCUSSION: Cecal intubation rates exceeded 90% and polypectomy rates exceeded 30%, but withdrawal times were frequently shorter than recommended. There are marked practice variations consistent with previous observations. CONCLUSION: Real-time, point-of-care practice audits with prompt, confidential access to outcome data provide a basis for targeted educational programs to improve quality in colonoscopy practice.


Asunto(s)
Colonoscopía/normas , Garantía de la Calidad de Atención de Salud , Adolescente , Adulto , Canadá , Pólipos del Colon/cirugía , Colonoscopía/métodos , Femenino , Humanos , Modelos Logísticos , Auditoría Médica , Sistemas de Atención de Punto , Pautas de la Práctica en Medicina , Estudios Prospectivos , Indicadores de Calidad de la Atención de Salud , Adulto Joven
14.
Gastrointest Endosc ; 63(4): 615-21, 2006 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-16564862

RESUMEN

BACKGROUND: Cannulation of the common bile duct (CBD) is the first step in endoscopic retrograde cholangiopancreatography (ERCP). Cannulation difficulty is a known risk factor for post-ERCP complications and may be minimized by the use of a smaller caliber sphincterotome. OBJECTIVE: To compare the efficacy of CBD cannulation with a 4 F versus a 5 F sphincterotome. DESIGN: A randomized controlled trial, with concealed allocation and double-blinding. PATIENTS: Adult patients undergoing their first ERCP at a tertiary referral center. INTERVENTION: Patients were randomized to undergo CBD cannulation with either a 4 F or 5 F sphincterotome. MAIN OUTCOME MEASUREMENTS: Successful deep cannulation in <15 attempts was the primary outcome. Secondary outcomes included number of attempts/time to cannulation, incidence of complications within 24 hours, and overall cannulation success (including patients before and after crossover). Analysis was intention to treat and included standard descriptive and inferential methods. RESULTS: A total of 107 patients were randomized: 51 (4 F) versus 56 (5 F). The majority were female (71%) and white (92%). Baseline demographics, presenting symptoms, and laboratory values were similar between groups. Similar success in initial cannulation was observed: 84.3% (4 F) and 83.9% (5 F). No differences were noted in time to cannulation (5.12 min [SD, 4.8] for 4 F vs 4.46 min [SD, 4.13] for 5 F; p = NS), number of attempts to cannulation (6.2 [SD, 5.2] for 4 F vs 5.7 [SD, 4.9] for 5 F; p = NS), or complications. The overall cannulation success was 92.2% (4 F) and 92.9% (5 F). LIMITATIONS: Premature termination of the trial resulted in decreased power. CONCLUSIONS: There exists no significant difference in efficacy between 4 F and 5 F sphincterotomes. The choice of initial sphincterotome should be dictated by physician preference.


Asunto(s)
Cateterismo/métodos , Colestasis Extrahepática/cirugía , Conducto Colédoco/cirugía , Esfinterotomía Endoscópica/instrumentación , Adulto , Calibración , Colangiopancreatografia Retrógrada Endoscópica , Método Doble Ciego , Diseño de Equipo , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Resultado del Tratamiento
15.
Gastroenterology ; 130(2): 323-33; quiz 591, 2006 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-16472588

RESUMEN

BACKGROUND & AIMS: Tumor necrosis factor blockade has been shown to be an effective treatment strategy in Crohn's disease (CD). Adalimumab is a human immunoglobulin G1 (IgG(1)) monoclonal antibody targeting tumor necrosis factor (TNF). A randomized, double-blind, placebo-controlled, dose-ranging trial was performed to evaluate the efficacy of adalimumab induction therapy in patients with CD. METHODS: A total of 299 patients with moderate to severe CD naive to anti-TNF therapy were randomized to receive subcutaneous injections at weeks 0 and 2 with adalimumab 40 mg/20 mg, 80 mg/40 mg, or 160 mg/80 mg or placebo. The primary endpoint was demonstration of a significant difference in the rates of remission at week 4 (defined as a Crohn's Disease Activity Index score <150 points) among the 80 mg/40 mg, 160 mg/80 mg, and placebo groups. RESULTS: The rates of remission at week 4 in the adalimumab 40 mg/20 mg, 80 mg/40 mg, and 160 mg/80 mg groups were 18% (P = .36), 24% (P = .06), and 36% (P = .001), respectively, and 12% in the placebo group. Adverse events occurred at similar frequencies in all 4 treatment groups except injection site reactions, which were more common in adalimumab-treated patients. CONCLUSIONS: Adalimumab was superior to placebo for induction of remission in patients with moderate to severe Crohn's disease naive to anti-TNF therapy. The optimal induction dosing regimen for adalimumab in this study was 160 mg at week 0 followed by 80 mg at week 2. Adalimumab was well tolerated.


Asunto(s)
Anticuerpos Monoclonales/uso terapéutico , Enfermedad de Crohn/tratamiento farmacológico , Adalimumab , Adulto , Anciano , Anticuerpos Monoclonales Humanizados , Femenino , Humanos , Masculino , Persona de Mediana Edad , Selección de Paciente , Placebos , Seguridad , Resultado del Tratamiento , Factor de Necrosis Tumoral alfa/inmunología
16.
Gastrointest Endosc ; 60(4): 551-6, 2004 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-15472677

RESUMEN

BACKGROUND: It has been suggested that the use of pure-cut electrosurgical current for endoscopic sphincterotomy may reduce the risk of post-ERCP pancreatitis. The aim of this study was to determine whether pure-cut current reduces the risk of pancreatitis compared with blend current. METHODS: Patients were randomly assigned to undergo sphincterotomy over a non-conductive guidewire with 30 W/sec pure-cut current or 30 W/sec blend-2 current by a blinded endoscopist. Serum amylase and lipase levels were determined 1 day before and within 24 hours after ERCP. Post-ERCP pancreatitis was the primary outcome of interest. Secondary outcomes were as follows: severity of immediate bleeding, as graded by a 3-point scale from 1 (no bleeding) to 3 (injection or balloon tamponade therapy required to stop bleeding) and evidence of delayed bleeding 24 hours after ERCP. Analyses were performed in intention-to-treat fashion. RESULTS: A total of 246 patients were randomized (116 pure-cut current, 130 blend current). There were no differences in baseline characteristics between the groups. The overall frequency of post-ERCP pancreatitis was 6.9%, with no significant difference in frequency between treatment arms (pure cut, 7.8% vs. blend, 6.1%; p = 0.62). The difference in rates of pancreatitis between the two groups was 1.7%: 95% CI[-4.8%, 8.2%]. Six patients (2.4%) had delayed bleeding after ERCP, of which two required transfusion. There was a significant increase in minor bleeding episodes (grade 2) in the pure-cut group (p < 0.0001). Delayed episodes of bleeding were equal (n = 3) in each arm. CONCLUSIONS: The type of current used when performing endoscopic sphincterotomy does not appear to alter the risk of post-ERCP pancreatitis. The selection of electrosurgical current for biliary endoscopic sphincterotomy should be based on endoscopist preference.


Asunto(s)
Colangiopancreatografia Retrógrada Endoscópica , Electrocirugia/métodos , Pancreatitis/prevención & control , Esfinterotomía Endoscópica/métodos , Adulto , Humanos , Hemorragia Posoperatoria/prevención & control , Estudios Prospectivos
17.
Proc Biol Sci ; 271 Suppl 6: S433-5, 2004 Dec 07.
Artículo en Inglés | MEDLINE | ID: mdl-15801596

RESUMEN

It is well documented that ants can protect plants against insect herbivores, but the underlying mechanisms remain almost undocumented. We propose and test the pheromone avoidance hypothesis--an indirect mechanism where insect herbivores are repelled not only by ants but also by ant pheromones. Herbivores subjected to ant predation will experience a selective advantage if they evolve mechanisms enabling them to avoid feeding within ant territories. Such a mechanism could be based on the ability to detect and evade ant pheromones. Field observations and data from the literature showed that the ant Oecophylla smaragdina distributes persistent pheromones throughout its territory. In addition, a laboratory test showed that the beetle Rhyparida wallacei, which this ant preys on, was reluctant to feed on leaves sampled within ant territories compared with leaves sampled outside territories. Thus, this study provides an example of an ant-herbivore system conforming to the pheromone avoidance hypothesis.


Asunto(s)
Hormigas/metabolismo , Reacción de Prevención/fisiología , Escarabajos/fisiología , Conducta Alimentaria/fisiología , Feromonas/metabolismo , Animales , Cadena Alimentaria , Hojas de la Planta , Rhizophoraceae , Tailandia
18.
CJEM ; 4(3): 178-84, 2002 May.
Artículo en Inglés | MEDLINE | ID: mdl-17609003

RESUMEN

BACKGROUND: Reducing the number of unnecessary antibiotic prescriptions given for common respiratory infections has been recommended as a way to limit bacterial resistance. This study assessed the validity of a clinical sore throat score in 2 community emergency departments (EDs) and its impact on antibiotic prescribing. We also attempted to improve on this approach by using a rapid streptococcal antigen test. METHODS: A total of 126 patients with new upper respiratory tract infections accompanied by sore throat were assessed by a physician. Pharyngeal swabs were obtained for a rapid test and throat culture, and information was gathered to determine the sore throat score. The sensitivity and specificity of the score approach were compared with usual physician care based on the rapid test results. RESULTS: Of the 126 cases of new upper respiratory infections with sore throat, physicians who followed their usual care routine, guided by the rapid test results, prescribed antibiotics for 46 patients. Of the 46 prescriptions, 18 were given to patients with culture-negative results for group A streptococcal (GAS) pharyngitis. Use of the sore throat score would not have reduced the number of prescriptions but would have missed only 1 patient with a positive culture result (p < 0.05). The rapid test was not as sensitive as throat culture. CONCLUSION: An explicit clinical score approach to the management of GAS pharyngitis is valid in a community ED setting and could improve the pattern of antibiotic prescribing. While the addition of a rapid streptococcal antigen test significantly decreased the sensitivity of detecting GAS infections, a combined approach consisting of the clinical score and throat culture for patients with negative results on the rapid test would decrease antibiotic prescribing and telephone follow-up without decreasing the sensitivity of detecting GAS infection.

19.
West Indian med. j ; 9(2): 142, June 1960.
Artículo en Inglés | MedCarib | ID: med-7618

RESUMEN

In 1955 Hugh Jones described a pattern of behaviour in the Jamaican diabetic which fitted neither of the two main types. The subjects were under 40 years of age, underweight, insulin resistant and in the absence of insulin seldom developed ketosis. These he designated Type "J". The original 13 cases and 11 additional cases have been followed up and a number have been subjected to specific investigations. Evidence is presented that "J" type diabetes is a phase in the course of the Type 11 patient and it is not a specific variant of the diabetic syndrome (AU)


Asunto(s)
Humanos , Diabetes Mellitus , Jamaica
20.
West Indian med. j ; 8(2): 128-31, June 1959.
Artículo en Inglés | MedCarib | ID: med-12780

RESUMEN

We have described the occurance in three adult members of one family (two male and one female) of muscular dystrophy, in which the wasting is mainly scapulo-humeral in distribution. The condition was more marked in the male members and clinically resembled Erb's juvenile type except that the male had, in addition, a well marked peripheral neuropathy. The duration of illness in each case was 25, 29 and 32 years respectively. Reference is made to a previous report (Gil, 1933) of a case of muscular dystrophy of 37 years' duration with posterior column degeneration. (AU)


Asunto(s)
Humanos , Adulto , Persona de Mediana Edad , Masculino , Femenino , Distrofias Musculares/diagnóstico , Distrofias Musculares/genética
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