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Contributors The following document and appendices represent the third edition of the Practice Guidelines for Ocular Telehealth-Diabetic Retinopathy. These guidelines were developed by the Diabetic Retinopathy Telehealth Practice Guidelines Working Group. This working group consisted of a large number of subject matter experts in clinical applications for telehealth in ophthalmology. The editorial committee consisted of Mark B. Horton, OD, MD, who served as working group chair and Christopher J. Brady, MD, MHS, and Jerry Cavallerano, OD, PhD, who served as cochairs. The writing committees were separated into seven different categories. They are as follows: 1.Clinical/operational: Jerry Cavallerano, OD, PhD (Chair), Gail Barker, PhD, MBA, Christopher J. Brady, MD, MHS, Yao Liu, MD, MS, Siddarth Rathi, MD, MBA, Veeral Sheth, MD, MBA, Paolo Silva, MD, and Ingrid Zimmer-Galler, MD. 2.Equipment: Veeral Sheth, MD (Chair), Mark B. Horton, OD, MD, Siddarth Rathi, MD, MBA, Paolo Silva, MD, and Kristen Stebbins, MSPH. 3.Quality assurance: Mark B. Horton, OD, MD (Chair), Seema Garg, MD, PhD, Yao Liu, MD, MS, and Ingrid Zimmer-Galler, MD. 4.Glaucoma: Yao Liu, MD, MS (Chair) and Siddarth Rathi, MD, MBA. 5.Retinopathy of prematurity: Christopher J. Brady, MD, MHS (Chair) and Ingrid Zimmer-Galler, MD. 6.Age-related macular degeneration: Christopher J. Brady, MD, MHS (Chair) and Ingrid Zimmer-Galler, MD. 7.Autonomous and computer assisted detection, classification and diagnosis of diabetic retinopathy: Michael Abramoff, MD, PhD (Chair), Michael F. Chiang, MD, and Paolo Silva, MD.
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Diabetes Mellitus , Retinopatía Diabética , Glaucoma , Degeneración Macular , Oftalmología , Telemedicina , Retinopatía Diabética/diagnóstico , Retinopatía Diabética/terapia , Humanos , Recién NacidoRESUMEN
OBJECTIVE: Many developing countries have shown interest in embracing telemedicine and incorporating it into their healthcare systems. In 2000, the U.S. Army Yuma Proving Ground (YPG) initiated a program to assist the Republic of Panama in establishing a demonstration Panamanian rural telemedicine program. YPG engaged the Arizona Telemedicine Program (ATP) to participate in the development and implementation of the program. MATERIALS AND METHODS: The ATP recommended adoption of a "top-down" strategy for creating the program. Early buy-in of the Panamanian Ministry of Health and academic leaders was regarded as critical to the achievement of long-term success. RESULTS: High-level meetings with the Minister of Health and the Rectors (i.e., Presidents) of the national universities gained early program support. A telemedicine demonstration project was established on a mountainous Indian reservation 230 miles west of Panama City. Today, three rural telemedicine clinics are linked to a regional Ministry of Health hospital for teleconsultations. Real-time bidirectional videoconferencing utilizes videophones connected over Internet protocol networks at a data rate of 768 kilobits per second to the San Felix Hospital. Telepediatrics, tele-obstetrics, telepulmonology, teledermatology, and tele-emergency medicine services became available. Telemedicine services were provided to the three sites for a total of 1,013 cases, with numbers of cases increasing each year. These three demonstration sites remained in operation after discontinuation of the U.S. involvement in September 2009 and serve as a model program for other telemedicine initiatives in Panama. CONCLUSIONS: Access to the assets of a partner-nation was invaluable in the establishment of the first model telemedicine demonstration program in Panama. After 3 years, the Panamanian Telemedicine and Telehealth Program (PTTP) became self-sufficient. The successful achievement of sustainability of the PTTP after disengagement by the United States fits the Latifi-Weinstein model for establishing telemedicine programs in developing countries.
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Desarrollo de Programa/métodos , Consulta Remota , Transferencia de Tecnología , Panamá , Proyectos Piloto , Población Rural , Estados UnidosRESUMEN
BACKGROUND: Observational studies report that higher intake of dietary fibre (a heterogeneous mix including non-starch polysaccharides and resistant starches) is associated with reduced risk of colorectal cancer, but no randomised trials with prevention of colorectal cancer as a primary endpoint have been done. We assessed the effect of resistant starch on the incidence of colorectal cancer. METHODS: In the CAPP2 study, individuals with Lynch syndrome were randomly assigned in a two-by-two factorial design to receive 600 mg aspirin or aspirin placebo or 30 g resistant starch or starch placebo, for up to 4 years. Randomisation was done with a block size of 16. Post-intervention, patients entered into double-blind follow-up; participants and investigators were masked to treatment allocation. The primary endpoint for this analysis was development of colorectal cancer in participants randomly assigned to resistant starch or resistant-starch placebo with both intention-to-treat and per-protocol analyses. This study is registered, ISRCTN 59521990. FINDINGS: 463 patients were randomly assigned to receive resistant starch and 455 to receive resistant-starch placebo. At a median follow-up 52·7 months (IQR 28·9-78·4), 53 participants developed 61 primary colorectal cancers (27 of 463 participants randomly assigned to resistant starch, 26 of 455 participants assigned to resistant-starch placebo). Intention-to-treat analysis of time to first colorectal cancer showed a hazard ratio (HR) of 1·40 (95% CI 0·78-2·56; p=0·26) and Poisson regression accounting for multiple primary events gave an incidence rate ratio (IRR) of 1·15 (95% CI 0·66-2·00; p=0·61). For those completing 2 years of intervention, per-protocol analysis yielded a HR of 1·09 (0·55-2·19, p=0·80) and an IRR of 0·98 (0·51-1·88, p=0·95). No information on adverse events was gathered during post-intervention follow-up. INTERPRETATION: Resistant starch had no detectable effect on cancer development in carriers of hereditary colorectal cancer. Dietary supplementation with resistant starch does not emulate the apparently protective effect of diets rich in dietary fibre against colorectal cancer. FUNDING: European Union, Cancer Research UK, Bayer Corporation, National Starch and Chemical Co, UK Medical Research Council, Newcastle Hospitals Trustees, Cancer Council of Victoria Australia, THRIPP South Africa, The Finnish Cancer Foundation, SIAK Switzerland, and Bayer Pharma.
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Neoplasias Colorrectales Hereditarias sin Poliposis/genética , Neoplasias Colorrectales Hereditarias sin Poliposis/prevención & control , Carbohidratos de la Dieta/uso terapéutico , Fibras de la Dieta/administración & dosificación , Heterocigoto , Almidón/uso terapéutico , Adulto , Anciano , Neoplasias Colorrectales/prevención & control , Método Doble Ciego , Femenino , Mutación de Línea Germinal , Humanos , Masculino , Persona de Mediana Edad , Adulto JovenRESUMEN
BACKGROUND: Observational studies report reduced colorectal cancer in regular aspirin consumers. Randomised controlled trials have shown reduced risk of adenomas but none have employed prevention of colorectal cancer as a primary endpoint. The CAPP2 trial aimed to investigate the antineoplastic effects of aspirin and a resistant starch in carriers of Lynch syndrome, the major form of hereditary colorectal cancer; we now report long-term follow-up of participants randomly assigned to aspirin or placebo. METHODS: In the CAPP2 randomised trial, carriers of Lynch syndrome were randomly assigned in a two-by-two factorial design to 600 mg aspirin or aspirin placebo or 30 g resistant starch or starch placebo, for up to 4 years. Randomisation was in blocks of 16 with provision for optional single-agent randomisation and extended postintervention double-blind follow-up; participants and investigators were masked to treatment allocation. The primary endpoint was development of colorectal cancer. Analysis was by intention to treat and per protocol. This trial is registered, ISRCTN59521990. RESULTS: 861 participants were randomly assigned to aspirin or aspirin placebo. At a mean follow-up of 55·7 months, 48 participants had developed 53 primary colorectal cancers (18 of 427 randomly assigned to aspirin, 30 of 434 to aspirin placebo). Intention-to-treat analysis of time to first colorectal cancer showed a hazard ratio (HR) of 0·63 (95% CI 0·35-1·13, p=0·12). Poisson regression taking account of multiple primary events gave an incidence rate ratio (IRR) of 0·56 (95% CI 0·32-0·99, p=0·05). For participants completing 2 years of intervention (258 aspirin, 250 aspirin placebo), per-protocol analysis yielded an HR of 0·41 (0·19-0·86, p=0·02) and an IRR of 0·37 (0·18-0·78, p=0·008). No data for adverse events were available postintervention; during the intervention, adverse events did not differ between aspirin and placebo groups. INTERPRETATION: 600 mg aspirin per day for a mean of 25 months substantially reduced cancer incidence after 55·7 months in carriers of hereditary colorectal cancer. Further studies are needed to establish the optimum dose and duration of aspirin treatment. FUNDING: European Union; Cancer Research UK; Bayer Corporation; National Starch and Chemical Co; UK Medical Research Council; Newcastle Hospitals trustees; Cancer Council of Victoria Australia; THRIPP South Africa; The Finnish Cancer Foundation; SIAK Switzerland; Bayer Pharma.
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Antiinflamatorios no Esteroideos/uso terapéutico , Aspirina/uso terapéutico , Neoplasias Colorrectales Hereditarias sin Poliposis/prevención & control , Heterocigoto , Adenoma/prevención & control , Quimioprevención , Neoplasias Colorrectales Hereditarias sin Poliposis/genética , Carbohidratos de la Dieta/uso terapéutico , Método Doble Ciego , Humanos , Almidón/uso terapéuticoRESUMEN
BACKGROUND: Observational and epidemiologic data indicate that the use of aspirin reduces the risk of colorectal neoplasia; however, the effects of aspirin in the Lynch syndrome (hereditary nonpolyposis colon cancer) are not known. Resistant starch has been associated with an antineoplastic effect on the colon. METHODS: In a randomized, placebo-controlled trial, we used a two-by-two design to investigate the effects of aspirin, at a dose of 600 mg per day, and resistant starch (Novelose), at a dose of 30 g per day, in reducing the risk of adenoma and carcinoma among persons with the Lynch syndrome. RESULTS: Among 1071 persons in 43 centers, 62 were ineligible to participate in the study, 72 did not enter the study, and 191 withdrew from the study. These three categories were equally distributed across the study groups. Over a mean period of 29 months (range, 7 to 74), colonic adenoma or carcinoma developed in 141 participants. Of 693 participants randomly assigned to receive aspirin or placebo, neoplasia developed in 66 participants receiving aspirin (18.9%), as compared with 65 receiving placebo (19.0%) (relative risk, 1.0; 95% confidence interval [CI], 0.7 to 1.4). There were no significant differences between the two groups with respect to the development of advanced neoplasia (7.4% and 9.9%, respectively; P=0.33). Among the 727 participants receiving resistant starch or placebo, neoplasia developed in 67 participants receiving starch (18.7%), as compared with 68 receiving placebo (18.4%) (relative risk, 1.0; 95% CI, 0.7 to 1.4). Advanced adenomas and colorectal cancers were evenly distributed in the two groups. The prevalence of serious adverse events was low, and the events were evenly distributed. CONCLUSIONS: The use of aspirin, resistant starch, or both for up to 4 years has no effect on the incidence of colorectal adenoma or carcinoma among carriers of the Lynch syndrome. (Current Controlled Trials number, ISRCTN59521990.)
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Adenoma/prevención & control , Aspirina/uso terapéutico , Carcinoma/prevención & control , Neoplasias Colorrectales Hereditarias sin Poliposis/tratamiento farmacológico , Neoplasias Colorrectales/prevención & control , Almidón/uso terapéutico , Adenoma/epidemiología , Adulto , Anciano , Aspirina/administración & dosificación , Aspirina/efectos adversos , Carcinoma/epidemiología , Neoplasias Colorrectales/epidemiología , Neoplasias Colorrectales Hereditarias sin Poliposis/genética , Reparación de la Incompatibilidad de ADN/genética , Quimioterapia Combinada , Femenino , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Modelos de Riesgos Proporcionales , Riesgo , Almidón/efectos adversos , Insuficiencia del TratamientoRESUMEN
An innovative telemedicine-enabled rapid breast care service is described that bundles telemammography, telepathology, and teleoncology services into a single day process. The service is called the UltraClinics Process. Since the core services are at four different physical locations a challenge has been to obtain STAT second opinion readouts on newly diagnosed breast cancer cases. In order to provide same day QA re-review of breast surgical pathology cases, a DMetrix DX-40 ultrarapid virtual slide scanner (DMetrix, Inc., Tucson, AZ) was installed at the participating laboratory. Glass slides of breast cancer and breast hyperplasia cases were scanned the same day the slides were produced by the University Physicians Healthcare Hospital histology laboratory. Virtual slide telepathology was used for STAT quality assurance readouts at University Medical Center, 6 miles away. There was complete concurrence with the primary diagnosis in 139 (90.3%) of cases. There were 4 (2.3%) major discrepancies, which would have resulted in a different therapy and 3 (1.9%) minor discrepancies. Three cases (1.9%) were deferred for immunohistochemistry. In 2 cases (1.3%), the case was deferred for examination of the glass slides by the reviewing pathologists at University Medical Center. We conclude that the virtual slide telepathology QA program found a small number of significant diagnostic discrepancies. The virtual slide telepathology program service increased the job satisfaction of subspecialty pathologists without special training in breast pathology, assigned to cover the general surgical pathology service at a small satellite university hospital.
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Telemedicine and telehealth programs are inherently complex compared with their traditional on-site health care delivery counterparts. Relatively few organizations have developed sustainable, multi-specialty telemedicine programs, although single service programs, such as teleradiology and telepsychiatry programs, are common. A number of factors are barriers to the development of sustainable telemedicine and telehealth programs. First, starting programs is often challenging since relatively few organizations have, in house, a critical mass of individuals with the skill sets required to organize and manage a telemedicine program. Therefore, it is necessary to "boot strap" many of the start-up activities using available personnel. Another challenge is to assemble a management team that has time to champion telemedicine and telehealth while dealing with the broad range of issues that often confront telemedicine programs. Telemedicine programs housed within a single health care delivery system have advantages over programs that serve as umbrella telehealth organizations for multiple health care systems. Planning a telemedicine program can involve developing a shared vision among the participants, including the parent organizations, management, customers and the public. Developing shared visions can be a time-consuming, iterative process. Part of planning includes having the partnering organizations and their management teams reach a consensus on the initial program goals, priorities, strategies, and implementation plans. Staffing requirements of telemedicine and telehealth programs may be met by sharing existent resources, hiring additional personnel, or outsourcing activities. Business models, such as the Application Service Provider (ASP) model used by the Arizona Telemedicine Program, are designed to provide staffing flexibility by offering a combination of in-house and out-sourced services, depending on the needs of the individual participating health care organizations. Telemedicine programs should perform ongoing assessments of activities, ranging from service usage to quality of service assessments, to ongoing analyses of financial performance. The financial assessments should include evaluations of costs and benefits, coding issues, reimbursement, account receivables, bad debt and network utilization. Long-range strategic planning for a telemedicine and telehealth program should be carried out on an on-going basis and should include the program's governing board. This planning process should include goal setting and the periodic updating of the program's vision and mission statements. There can be additional special issues for multi-organization telemedicine and telehealth programs. For example, authority management can require the use of innovative approaches tailored to the realities of the organizational structures of the participating members. Inter-institutional relations may introduce additional issues when competing health care organizations are utilizing shared resources. Branding issues are preferably addressed during the initial planning of a multi-organizational telemedicine and telehealth program. Ideally, public policy regarding telemedicine and telehealth within a service region will complement the objectives of telemedicine and telehealth programs within that service area.
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Redes de Comunicación de Computadores/organización & administración , Prestación Integrada de Atención de Salud/métodos , Telemedicina/organización & administración , Medicina Basada en la Evidencia , Humanos , Telemedicina/métodos , Telemedicina/tendenciasRESUMEN
This concept paper addresses communication issues arising between physicians and their patients. To facilitate the communication of essential diagnostic pathology information to patients, and address their questions and concerns, we propose that "Pathology Explanation Clinics" be created. The Pathology Explanation Clinics would provide a channel for direct communications between pathologists and patients. Pathologists would receive special training as "Certified Pathologist Navigators" in preparation for this role. The goal of Pathology Explanation Clinics would be to help fill gaps in communication of information contained in laboratory reports to patients, further explain its relevance, and improve patient understanding of the meaning of such information and its impact on their health and health-care choices. Effort would be made to ensure that Certified Pathologist Navigators work within the overall coordination of care by the health-care team.
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Starting in 1910, the "Flexner Revolution" in medical education catalyzed the transformation of the US medical education enterprise from a proprietary medical school dominated system into a university-based medical school system. In the 21st century, what we refer to as the "Second Flexner Century" shifts focus from the education of medical students to the education of the general population in the "4 health literacies." Compared with the remarkable success of the first Flexner Revolution, retrofitting medical science education into the US general population today, starting with K-12 students, is a more daunting task. The stakes are high. The emergence of the patient-centered medical home as a health-care delivery model and the revelation that medical errors are the third leading cause of adult deaths in the United States are drivers of population education reform. In this century, patients will be expected to assume far greater responsibility for their own health care as full members of health-care teams. For us, this process began in the run-up to the "Second Flexner Century" with the creation and testing of a general pathology course, repurposed as a series of "gateway" courses on mechanisms of diseases, suitable for introduction at multiple insertion points in the US education continuum. In this article, we describe nomenclature for these gateway courses and a "top-down" strategy for creating pathology coursework for nonmedical students. Finally, we list opportunities for academic pathology departments to engage in a national "Democratization of Medical Knowledge" initiative.
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OBJECTIVE: Risk factors for cerebral palsy (CP) in premature infants include duration of mechanical ventilation and exposure to postnatal dexamethasone (DEX). Since DEX can reduce the duration of mechanical ventilation, limited DEX exposure could be beneficial. METHODS: This was a retrospective, cohort study of infants of less than 1500 g birth weight surviving to discharge between 1 January 1996 and 30 June 2001 who received postnatal dexamethasone. DEX administration was based only on the need for O2 and/or mechanical ventilation. CP was diagnosed at over 10 months post-conceptional age. Univariate and multivariate analyses were used to determine significant risk factors and the relative contribution of these factors to overall risk of CP. RESULTS: Of 218 eligible infants 162 were followed-up (74%). The CP rate was 27.3%. Significant risk factors for CP included gestational age, ventilator duration, DEX dose, presence of periventricular leukomalacia (PVL), seizures, diagnosis of retinopathy of prematurity (ROP) and use of vasopressors. By multiple logistic regression, ventilator duration, PVL, grade III/IV intraventricular hemorrhage (IVH) and DEX dose were significantly related to CP. By stepwise multiple regression, grade III/IV IVH and ventilator duration were the strongest risk factors, but DEX dose continued to be a significant risk factor. CONCLUSIONS: The risk of CP was significantly related to the total cumulative dose of DEX. This could be due to a smaller exposure to DEX or to a reduced need for mechanical ventilation.
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Parálisis Cerebral/etiología , Dexametasona/efectos adversos , Glucocorticoides/efectos adversos , Respiración Artificial/efectos adversos , Adulto , Displasia Broncopulmonar/prevención & control , Hemorragia Cerebral/complicaciones , Parálisis Cerebral/epidemiología , Ventrículos Cerebrales , Estudios de Cohortes , Dexametasona/administración & dosificación , Femenino , Estudios de Seguimiento , Edad Gestacional , Glucocorticoides/administración & dosificación , Humanos , Lactante , Recién Nacido , Recien Nacido Prematuro , Enfermedades del Prematuro/prevención & control , Recién Nacido de muy Bajo Peso , Leucomalacia Periventricular/complicaciones , Modelos Logísticos , Masculino , Atención Posnatal , Estudios Retrospectivos , Factores de Riesgo , Convulsiones/complicaciones , Índice de Severidad de la Enfermedad , Factores de Tiempo , Virginia/epidemiologíaRESUMEN
A medical school general pathology course has been reformatted into a K-12 general pathology course. This new course has been implemented at a series of 7 to 12 grade levels and the student outcomes compared. Typically, topics covered mirrored those in a medical school general pathology course serving as an introduction to the mechanisms of diseases. Assessment of student performance was based on their score on a multiple-choice final examination modeled after an examination given to medical students. Two Tucson area schools, in a charter school network, participated in the study. Statistical analysis of examination performances showed that there were no significant differences as a function of school (F = 0.258, P = .6128), with students at school A having an average test scores of 87.03 (standard deviation = 8.99) and school B 86.00 (standard deviation = 8.18; F = 0.258, P = .6128). Analysis of variance was also conducted on the test scores as a function of gender and class grade. There were no significant differences as a function of gender (F = 0.608, P = .4382), with females having an average score of 87.18 (standard deviation = 7.24) and males 85.61 (standard deviation = 9.85). There were also no significant differences as a function of grade level (F = 0.627, P = .6003), with 7th graders having an average of 85.10 (standard deviation = 8.90), 8th graders 86.00 (standard deviation = 9.95), 9th graders 89.67 (standard deviation = 5.52), and 12th graders 86.90 (standard deviation = 7.52). The results demonstrated that middle and upper school students performed equally well in K-12 general pathology. Student course evaluations showed that the course met the student's expectations. One class voted K-12 general pathology their "elective course-of-the-year."
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The Arizona Telemedicine Program (ATP) was established in 1996 when state funding was provided to implement eight telemedicine sites. Since then the ATP has expanded to connect 55 health-care organizations through a membership programme formalized through legal contracts. The ATP's membership model is based on an application service provider (ASP) concept, whereby organizations can share services at lower cost; that is, the ATP acts as a broker for services. The membership fee schedule is flexible, allowing clients to purchase only those services desired. An annual membership fee is paid by every user, based on the services requested. The membership programme income has provided a steady revenue stream for the ATP. The membership-derived revenue represented 30% of the ATP's 2.6 million dollars total income during fiscal year 2003/04.
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Atención a la Salud/organización & administración , Desarrollo de Programa , Telemedicina/organización & administración , Arizona , Atención a la Salud/economía , Humanos , Modelos Económicos , Servicios de Salud Rural/organización & administración , Telemedicina/economíaRESUMEN
The relationship between socio-economic status and health has been consistently reported and is thought to be causal. Socio-economic inequalities are present in the incidence of and mortality from cancer in general, but not in the incidence of colorectal cancer in particular. However, there are socio-economic gradients in mortality from colorectal cancer. The socio-economic distribution of incidence of and mortality from colorectal cancer in individuals with hereditary non-polyposis colon cancer (Lynch syndrome) is not known. It is possible that increased awareness of and access to screening for colorectal cancer amongst this group of individuals reduces the socio-economic gradients seen in the population as a whole. We investigated the relationship between socio-economic status and age of resection of colorectal cancer in a cohort of individuals with hereditary non-polyposis colon cancer. More affluent individuals tended to undergo surgical resection for colorectal cancers earlier in their lives than less affluent individuals. This relationship was bordering on statistical significance. This trend probably represents socio-economic variations in access to treatment. In addition, age based diagnostic criteria for hereditary non-polyposis colon cancer may, inadvertently, accentuate socio-economic inequalities in outcome.
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Actitud Frente a la Salud , Neoplasias Colorrectales Hereditarias sin Poliposis/epidemiología , Neoplasias Colorrectales Hereditarias sin Poliposis/cirugía , Neoplasias Colorrectales/epidemiología , Neoplasias Colorrectales/cirugía , Adulto , Factores de Edad , Anciano , Estudios de Cohortes , Colectomía/normas , Colectomía/tendencias , Neoplasias Colorrectales/patología , Neoplasias Colorrectales Hereditarias sin Poliposis/patología , Femenino , Humanos , Incidencia , Masculino , Tamizaje Masivo/normas , Tamizaje Masivo/tendencias , Persona de Mediana Edad , Probabilidad , Sistema de Registros , Factores de Riesgo , Clase Social , Factores Socioeconómicos , Análisis de Supervivencia , Factores de Tiempo , Reino Unido/epidemiologíaRESUMEN
This paper describes the design and fabrication of a novel array microscope for the first ultrarapid virtual slide processor (DMetrix DX-40 digital slide scanner). The array microscope optics consists of a stack of three 80-element 10 x 8-lenslet arrays, constituting a "lenslet array ensemble." The lenslet array ensemble is positioned over a glass slide. Uniquely shaped lenses in each of the lenslet arrays, arranged perpendicular to the glass slide constitute a single "miniaturized microscope." A high-pixel-density image sensor is attached to the top of the lenslet array ensemble. In operation, the lenslet array ensemble is transported by a motorized mechanism relative to the long axis of a glass slide. Each of the 80 miniaturized microscopes has a lateral field of view of 250 microns. The microscopes of each row of the array are offset from the microscopes in other rows. Scanning a glass slide with the array microscope produces seamless two-dimensional image data of the entire slide, that is, a virtual slide. The optical system has a numerical aperture of N.A.= 0.65, scans slides at a rate of 3 mm per second, and accrues up to 3,000 images per second from each of the 80 miniaturized microscopes. In the ultrarapid virtual slide processing cycle, the time for image acquisition takes 58 seconds for a 2.25 cm2 tissue section. An automatic slide loader enables the scanner to process up to 40 slides per hour without operator intervention. Slide scanning and image processing are done concurrently so that post-scan processing is eliminated. A virtual slide can be viewed over the Internet immediately after the scanning is complete. A validation study compared the diagnostic accuracy of pathologist case readers using array microscopy (with images viewed as virtual slides) and conventional light microscopy. Four senior pathologists diagnosed 30 breast surgical pathology cases each using both imaging modes, but on separate occasions. Of 120 case reads by array microscopy, there were 3 incorrect diagnoses, all of which were made on difficult cases with equivocal diagnoses by light microscopy. There was a strong correlation between array microscopy vs. "truth" diagnoses based on surgical pathology reports. The kappa statistic for the array microscopy vs. truth was 0.96, which is highly significant (z=10.33, p <0.001). There was no statistically significant difference between rates of agreement with truth between array microscopy and light microscopy (z=0.134, p >0.05). Array microscopy and light microscopy did not differ significantly with respect to the number/percent of correct decisions rendered (t=0.552, p=0.6376) or equivocal decisions rendered (t=2.449, p=0.0917). Pathologists rated 95.8% of array microscopy virtual slide images as good or excellent. None were rated as poor. The mean viewing time for a DMetrix virtual slide was 1.16 minutes. The DMetrix virtual slide processor has been found to reduce the virtual slide processing cycle more than 10 fold, as compared with other virtual slide systems reported to date. The virtual slide images are of high quality and suitable for diagnostic pathology, second opinions, expert opinions, clinical trials, education, and research.
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Procesamiento de Imagen Asistido por Computador , Microscopía/instrumentación , Patología Clínica/instrumentación , Telepatología/instrumentación , Diseño de Equipo , Humanos , Microscopía/métodos , Patología Clínica/métodos , Reproducibilidad de los Resultados , Telepatología/métodosRESUMEN
Over six years, 4317 teleconsultations were scheduled in the Arizona Telemedicine Program. A total of 402 scheduled teleconsultations (9.3%) did not take place. A review showed that 254 were cancelled but eventually took place (5.9%), while 148 never took place (3.4%). The cost of a teleconsultation to the service provider was, at minimum, 228 US dollars. Telepsychiatry accounted for all the missed consultations that eventually took place, and 92% of these were from three of the six sites referring telepsychiatry patients. Pain management (23%) and psychiatry (21%) accounted for the largest proportions of teleconsultations that never took place. Telepsychiatry cases accounted for 71% of all unsuccessful consultations and accounted for only 34% of successful teleconsultations during the same period. Most missed teleconsultations had been scheduled as realtime sessions (84%). The most common reason for unsuccessful teleconsultations was that the patient did not attend (26%), followed by the patient having to be seen in person (17%). Although all referring sites had unsuccessful cases, certain sites accounted for more than others. These were sites that scheduled more telepsychiatry consultations than the others. The proportion of unsuccessful cases per site ranged from 4% to 17% of the total number of scheduled teleconsultations.
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Psiquiatría/estadística & datos numéricos , Consulta Remota/estadística & datos numéricos , Adulto , Arizona , Niño , Preescolar , Femenino , Humanos , Masculino , Relaciones Profesional-Paciente , Consulta Remota/economía , Negativa del Paciente al TratamientoRESUMEN
We retrospectively reviewed the follow-up and outcomes of 50 store-and-forward teledermatology patients, and compared the findings with those from a control group of 50 patients who had been seen in person. Patient records were examined for a six-month period following the initial referral to a dermatologist. Variables examined included medical records from the referral, evidence of actions taken (e.g. biopsy), evidence of follow-up visits, and what (if any) clinical outcomes were noted. There were few differences between the teledermatology and in-person groups. The main difference was whether there was any report in the record that the referring clinician took some action based on the consultation with the specialist: there were more reports of action being taken in the teledermatology group than in the in-person group. Reports of outcomes were found in only 6% and 8% of the records of the teledermatology and in-person groups, respectively. The challenges of assessing outcomes in teledermatology for rural patients include patient loss to follow-up, lack of information in the patient records and low rates of patient return to the referring clinician for follow-up.
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Dermatología/métodos , Derivación y Consulta/estadística & datos numéricos , Enfermedades de la Piel/diagnóstico , Telemedicina/estadística & datos numéricos , Dermatología/estadística & datos numéricos , Humanos , Estudios Retrospectivos , Enfermedades de la Piel/terapia , Resultado del TratamientoRESUMEN
There has been a spike in interest and use of telehealth, catalyzed recently by the anticipated implementation of the Affordable Care Act, which rewards efficiency in healthcare delivery. Advances in telehealth services are in many areas, including gap service coverage (eg, night-time radiology coverage), urgent services (eg, telestroke services and teleburn services), mandated services (eg, the delivery of health care services to prison inmates), and the proliferation of video-enabled multisite group chart rounds (eg, Extension for Community Healthcare Outcomes programs). Progress has been made in confronting traditional barriers to the proliferation of telehealth. Reimbursement by third-party payers has been addressed in 19 states that passed parity legislation to guarantee payment for telehealth services. Medicare lags behind Medicaid, in some states, in reimbursement. Interstate medical licensure rules remain problematic. Mobile health is currently undergoing explosive growth and could be a disruptive innovation that will change the face of healthcare in the future.
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Teléfono Celular , Atención a la Salud/organización & administración , Telemedicina , Habilitación Profesional , Atención a la Salud/economía , Hospitales/normas , Humanos , Seguro de Salud , Licencia Médica , Patient Protection and Affordable Care Act , Mecanismo de Reembolso , Telemedicina/economía , Estados Unidos , Grabación en VideoRESUMEN
BACKGROUND: Manual ventilation in the delivery room is provided with devices such as self-inflating bags (SIBs), flow-inflating bags, and T-piece resuscitators. OBJECTIVE: To compare the effect of type of manual ventilation device on overall response to resuscitation among preterm neonates born at < 35 weeks gestation. METHODS: Retrospective data were collected in 2 time periods. Primary outcome was overall response to resuscitation, as measured by Apgar score. Secondary outcomes were incidence of air leaks, need for chest compressions/epinephrine, need for intubation, and surfactant use. RESULTS: We identified 294 resuscitations requiring ventilation. SIB was used for 135 neonates, and T-piece was used for 159 neonates. There was no significant difference between the 1-min and 5-min Apgar scores between SIB and T-piece (P = .77 and P = .11, respectively), nor were there significant differences in secondary outcomes. The rate of rise of Apgar score was higher, by 0.47, with T-piece, compared to SIB (95% CI 0.08-0.87, P = .02). CONCLUSIONS: Although some manikin studies favor T-piece for providing reliable and consistent pressures, our experience did not indicate significant differences in effectiveness of resuscitation between the T-piece and SIB in preterm resuscitations.
Asunto(s)
Ventilación no Invasiva , Resucitación , Ventiladores Mecánicos , Puntaje de Apgar , Broncodilatadores/uso terapéutico , Investigación sobre la Eficacia Comparativa , Epinefrina/uso terapéutico , Femenino , Edad Gestacional , Humanos , Recién Nacido , Recien Nacido Prematuro , Intubación Intratraqueal/estadística & datos numéricos , Masculino , Monitoreo Fisiológico , Ventilación no Invasiva/efectos adversos , Ventilación no Invasiva/métodos , Ventilación no Invasiva/estadística & datos numéricos , Evaluación de Resultado en la Atención de Salud , Resucitación/efectos adversos , Resucitación/métodos , Resucitación/estadística & datos numéricos , Estudios Retrospectivos , Lesión Pulmonar Inducida por Ventilación Mecánica/prevención & controlRESUMEN
Telepathology, the distant service component of digital pathology, is a growth industry. The word "telepathology" was introduced into the English Language in 1986. Initially, two different, competing imaging modalities were used for telepathology. These were dynamic (real time) robotic telepathology and static image (store-and-forward) telepathology. In 1989, a hybrid dynamic robotic/static image telepathology system was developed in Norway. This hybrid imaging system bundled these two primary pathology imaging modalities into a single multi-modality pathology imaging system. Similar hybrid systems were subsequently developed and marketed in other countries as well. It is noteworthy that hybrid dynamic robotic/static image telepathology systems provided the infrastructure for the first truly sustainable telepathology services. Since then, impressive progress has been made in developing another telepathology technology, so-called "virtual microscopy" telepathology (also called "whole slide image" telepathology or "WSI" telepathology). Over the past decade, WSI has appeared to be emerging as the preferred digital telepathology digital imaging modality. However, recently, there has been a re-emergence of interest in dynamic-robotic telepathology driven, in part, by concerns over the lack of a means for up-and-down focusing (i.e., Z-axis focusing) using early WSI processors. In 2010, the initial two U.S. patents for robotic telepathology (issued in 1993 and 1994) expired enabling many digital pathology equipment companies to incorporate dynamic-robotic telepathology modules into their WSI products for the first time. The dynamic-robotic telepathology module provided a solution to the up-and-down focusing issue. WSI and dynamic robotic telepathology are now, rapidly, being bundled into a new class of telepathology/digital pathology imaging system, the "WSI-enhanced dynamic robotic telepathology system". To date, six major WSI processor equipment companies have embraced the approach and developed WSI-enhanced dynamic-robotic digital telepathology systems, marketed under a variety of labels. Successful commercialization of such systems could help overcome the current resistance of some pathologists to incorporate digital pathology, and telepathology, into their routine and esoteric laboratory services. Also, WSI-enhanced dynamic robotic telepathology could be useful for providing general pathology and subspecialty pathology services to many of the world's underserved populations in the decades ahead. This could become an important enabler for the delivery of patient-centered healthcare in the future.
Asunto(s)
Robótica , Telepatología , Tecnología Biomédica/métodos , Diagnóstico por Imagen/métodos , Humanos , Microscopía/instrumentación , Microscopía/métodos , Consulta Remota/métodos , Consulta Remota/tendencias , Robótica/instrumentación , Procesamiento de Señales Asistido por Computador , Telepatología/instrumentación , Telepatología/métodos , Telepatología/tendenciasRESUMEN
Communications strategies are central to the planning and execution of interprofessional education (IPE) programs. The diversity of telecommunications-based tools and platforms available for IPE is rapidly expanding. Each tool and platform has a potentially important role to play. The selection, testing, and embedding of tools, such as social networking platforms, within education programs can be very challenging. The goal was to create, in Phoenix, a "command-and-control" video conferencing center (the T-Health Amphitheater or Telehealth Amphitheater) in which tele-consultation patients, located physically at one of the affiliated tele-clinics around the state, could be presented electronically to interprofessional teams of faculty members from the University of Arizona Colleges of Medicine, Nursing, Pharmacy, and Public Health, as well as those from the allied health colleges of other universities in Arizona, for interprofessional team training in a virtual classroom setting. The T-Health video conferencing facility was designed and built. Early assessments show that its novel learning environment is student- and faculty-friendly. T-Health Amphitheater's pair of innovative visible social networking platforms (eStacks™ and eSwaps™) may help break down some of the traditional communications barriers encountered in healthcare IPE and medical practices.