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1.
Conserv Biol ; 31(2): 322-330, 2017 04.
Artículo en Inglés | MEDLINE | ID: mdl-27310833

RESUMEN

The global biodiversity crisis requires an engaged citizenry that provides collective support for public policies and recognizes the consequences of personal consumption decisions. Understanding the factors that affect personal engagement in proenvironmental behaviors is essential for the development of actionable conservation solutions. Zoos and aquariums may be some of the only places where many people can explore their relations with wild animals and proenvironmental behaviors. Using a moderated-mediation analysis of a survey of U.S. zoo and aquarium visitors (n = 3588), we explored the relationship between the sense of connection to animals and self-reported engagement in proenvironmental behaviors related to climate change and how this relationship is affected by certainty that climate change is happening, level of concern about climate change, and perceptions of effectiveness in personally addressing climate change. We found a significant, directional relationship between sense of connection to animals and self-reported proenvironmental behaviors. Political inclination within the conservative to liberal spectrum did not affect the relationship. We conclude that a personal sense of connection to animals may provide a foundation for educational and communication strategies to enhance involvement in proenvironmental actions.


Asunto(s)
Biodiversidad , Cambio Climático , Conservación de los Recursos Naturales , Animales , Animales de Zoológico , Humanos , Opinión Pública , Autoinforme
2.
Gerontologist ; 56(3): 535-47, 2016 06.
Artículo en Inglés | MEDLINE | ID: mdl-24928555

RESUMEN

PURPOSE OF THE STUDY: To determine the extent to which structures and processes of care in multilevel settings (independent living, assisted living, and nursing homes) result in stigma in assisted living and nursing homes. DESIGN AND METHODS: Ethnographic in-depth interviews were conducted in 5 multilevel settings with 256 residents, families, and staff members. Qualitative analyses identified the themes that resulted when examining text describing either structures of care or processes of care in relation to 7 codes associated with stigma. RESULTS: Four themes related to structures of care and stigma were identified, including the physical environment, case mix, staff training, and multilevel settings; five themes related to processes of care and stigma, including dining, independence, respect, privacy, and care provision. For each theme, examples were identified illustrating how structures and processes of care can potentially promote or protect against stigma. IMPLICATIONS: In no instance were examples or themes identified that suggested the staff intentionally promoted stigma; on the other hand, there was indication that some structures and processes were intentionally in place to protect against stigma. Perhaps the most important theme is the stigma related to multilevel settings, as it has the potential to reduce individuals' likelihood to seek and accept necessary care. Results suggest specific recommendations to modify care and reduce stigma.


Asunto(s)
Envejecimiento , Instituciones de Vida Asistida , Casas de Salud , Prejuicio , Estigma Social , Anciano , Anciano de 80 o más Años , Antropología Cultural , Actitud del Personal de Salud , Femenino , Humanos , Masculino
3.
Nurs Womens Health ; 18(4): 294-303, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25145718

RESUMEN

A quality improvement (QI) project was designed to identify women's perceptions of the benefits of skin-to-skin contact with newborns immediately following cesarean birth. Women reported positive experiences associated with skin-to-skin contact with their newborns. A major theme that emerged was that women who had cesarean birth felt that this QI project resulted in a birthing experience comparable to that of mothers who had vaginal deliveries. Participants also experienced decreased anxiety regarding the health and welfare of their newborns, as compared to a previous cesarean birth experience in which they did not have skin-to-skin contact.


Asunto(s)
Cesárea/educación , Relaciones Madre-Hijo/psicología , Percepción , Mejoramiento de la Calidad/estadística & datos numéricos , Cesárea/enfermería , Cesárea/psicología , Femenino , Humanos , Embarazo , Encuestas y Cuestionarios
4.
J Gerontol B Psychol Sci Soc Sci ; 69(3): 431-41, 2014 May.
Artículo en Inglés | MEDLINE | ID: mdl-24642968

RESUMEN

OBJECTIVES: The study sought to identify the varied types of change arising from internal and external influences in assisted living (AL) settings, expanding upon the literature's limited focus on resident decline and staff turnover and clarifying the importance of changes to life and work there. METHOD: This analysis employed qualitative interviews and observations from 4 studies involving 17 ALs to identify elements of change largely absent from the literature. Case material identified by the research team members relating to persons, groups, and settings exemplifying typical changes, as well as variations across settings, are presented. RESULTS: Multiple domains of AL change were identified, to include those in: (a) the external economic or competitive environments; (b) ownership, management, or key personnel; and (c) physical health or cognition of the aggregate resident population. In many cases, the changes influenced residents' satisfaction and perceived fit with the AL environment. DISCUSSION: Change of many types is a regular feature of AL; many changes alter routines or daily life; raise concerns of staff, residents, or families; or modify perceptions of residential normalcy. Environmental gerontology should more often extend the environment to include the social and interpersonal characteristics of collective living sites for elders.


Asunto(s)
Actividades Cotidianas/psicología , Envejecimiento/psicología , Instituciones de Vida Asistida/normas , Satisfacción Personal , Calidad de Vida , Antropología Cultural/métodos , Instituciones de Vida Asistida/organización & administración , Humanos , Relaciones Interpersonales , Entrevista Psicológica , Cuidados a Largo Plazo , Maryland , Investigación Cualitativa , Estigma Social , Recursos Humanos
5.
J Ultrasound Med ; 32(2): 269-77, 2013 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-23341383

RESUMEN

OBJECTIVES: To determine reference ranges for measurements of fetal cerebral fissures by 3-dimensional (3D) sonography in the multiplanar mode and to evaluate the reliability and concordance of these measurements. METHODS: A cross-sectional study was conducted on 393 women with normal pregnancies at 22 weeks to 33 weeks 6 days. The distances between the internal bone plate of the fetal calvaria and the sylvian, parieto-occipital, hippocampal, and calcarine fissures were assessed. To obtain the distances for the first 3 fissures, a 3D sweep was made in the axial plane, at the level of the lateral ventricles. To obtain the distance for the calcarine fissure, a coronal sweep was used, at the level of the occipital lobes. To evaluate the correlation between the fissures and gestational age, polynomial regression was performed with adjustments using the coefficient of determination (R(2)). Reliability was determined with intraclass correlation coefficients and concordance with concordance limits. RESULTS: The mean distances ± SD to the sylvian, parieto-occipital, hippocampal, and calcarine fissures were 10.42 ± 2.28, 22.38 ± 3.23, 24.88 ± 4.67, and 21.19 ± 2.73 mm, respectively. These distances correlated with gestational age such that the best fit with the linear equation produced R(2) values of 0.582, 0.627, 0.860, and 0.458 for the sylvian, parieto-occipital, hippocampal, and calcarine fissures. Reliability analyses showed intraobserver and interobserver intraclass correlation coefficients of 0.90 to 0.95 and 0.85 to 0.97. The concordance limits were-1.33 to 1.30 and -2.38 to 2.28 mm for the intraobserver evaluation and -1.60 to 2.57 and -3.51 to 2.73 mm for the interobserver evaluation. CONCLUSIONS: Cerebral fissures can be measured by 3D sonography at 22 to 33 weeks of pregnancy with acceptable reliability and concordance. Reference ranges for this gestational period have thus been described.


Asunto(s)
Corteza Cerebral/diagnóstico por imagen , Corteza Cerebral/embriología , Ecoencefalografía/métodos , Imagenología Tridimensional , Segundo Trimestre del Embarazo , Ultrasonografía Prenatal , Adolescente , Adulto , Corteza Cerebral/anatomía & histología , Estudios Transversales , Femenino , Edad Gestacional , Hipocampo/diagnóstico por imagen , Hipocampo/embriología , Humanos , Lóbulo Occipital/diagnóstico por imagen , Lóbulo Occipital/embriología , Lóbulo Parietal/diagnóstico por imagen , Lóbulo Parietal/embriología , Embarazo , Estudios Prospectivos , Valores de Referencia , Reproducibilidad de los Resultados , Adulto Joven
6.
J Pediatr Urol ; 9(1): 3-6, 2013 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-22841402

RESUMEN

PURPOSE: To review our experience with prenatal diagnosis of bladder exstrophy by fetal magnetic resonance imaging (MRI). Bladder exstrophy can be diagnosed by ultrasonography (US) evaluation of the fetus based on absence of bladder filling, low-set umbilicus, small genitalia and lower abdominal mass, although in some instances more accurate anatomical information is desired. MATERIAL AND METHODS: We studied three patients at mean gestational age of 27.3 weeks. The fetal MRI exam was performed on axial, sagittal, coronal planes and echo gradient in the best plan for acquisition of fetus. Images were analyzed by a group of three radiologists with experience in fetal MRI. RESULTS: The MRI defined a lower abdominal mass prolapsing below the umbilical vessels, having the ureters ending on it in an anterior position. A cloacal malformation or a cloacal exstrophy could be excluded, as well as other accompanying spinal abnormalities. The renal system and oligohydramnios could be well documented. CONCLUSIONS: The MRI showed a detailed scenario of the abnormality with advantages over the US evaluation in regard to excluding cloacal anomalies. MRI allowed accurate sexual differentiation and may be indicated after suspected bladder exstrophy on US evaluation.


Asunto(s)
Extrofia de la Vejiga/patología , Enfermedades Fetales/patología , Imagen por Resonancia Magnética/métodos , Oligohidramnios/patología , Diagnóstico Prenatal/métodos , Uréter/anomalías , Femenino , Edad Gestacional , Humanos , Embarazo
7.
Future Child ; 22(2): 89-116, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-23057133

RESUMEN

Learning to read--amazing as it is to small children and their parents--is one thing. Reading to learn, explains Susan Goldman of the University of Illinois at Chicago, is quite another. Are today's students able to use reading and writing to acquire knowledge, solve problems, and make decisions in academic, personal, and professional arenas? Do they have the literacy skills necessary to meet the demands of the twenty-first century? To answer these questions, Goldman describes the increasingly complex comprehension, reasoning skills, and knowledge that students need as they progress through school and surveys what researchers and educators know about how to teach those skills. Successfully reading to learn requires the ability to analyze, synthesize, and evaluate information from multiple sources, Goldman writes. Effective readers must be able to apply different knowledge, reading, and reasoning processes to different types of content, from fiction to history and science, to news accounts and user manuals. They must assess sources of information for relevance, reliability, impartiality, and completeness. And they must connect information across multiple sources. In short, successful readers must not only use general reading skills but also pay close attention to discipline-specific processes. Goldman reviews the evidence on three different instructional approaches to reading to learn: general comprehension strategies, classroom discussion, and disciplinary content instruction. She argues that building the literacy skills necessary for U.S. students to read comprehensively and critically and to learn content in a variety of disciplines should be a primary responsibility for all of the nation's teachers. But outside of English, few subject-area teachers are aware of the need to teach subject-area reading comprehension skills, nor have they had opportunities to learn them themselves. Building the capacity of all teachers to meet the literacy needs of today's students requires long-term investment and commitment from the education community as well as society as a whole.


Asunto(s)
Comprensión , Alfabetización Informacional , Aprendizaje , Lectura , Enseñanza/normas , Adolescente , Humanos , Enseñanza/métodos
8.
Behav Res Methods ; 44(3): 622-33, 2012 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-22653561

RESUMEN

The present study explored different approaches for automatically scoring student essays that were written on the basis of multiple texts. Specifically, these approaches were developed to classify whether or not important elements of the texts were present in the essays. The first was a simple pattern-matching approach called "multi-word" that allowed for flexible matching of words and phrases in the sentences. The second technique was latent semantic analysis (LSA), which was used to compare student sentences to original source sentences using its high-dimensional vector-based representation. Finally, the third was a machine-learning technique, support vector machines, which learned a classification scheme from the corpus. The results of the study suggested that the LSA-based system was superior for detecting the presence of explicit content from the texts, but the multi-word pattern-matching approach was better for detecting inferences outside or across texts. These results suggest that the best approach for analyzing essays of this nature should draw upon multiple natural language processing approaches.


Asunto(s)
Inteligencia Artificial , Instrucción por Computador/métodos , Evaluación Educacional/métodos , Procesamiento de Lenguaje Natural , Publicaciones Periódicas como Asunto , Semántica , Máquina de Vectores de Soporte , Escritura , Sistemas Especialistas , Humanos , Reconocimiento de Normas Patrones Automatizadas , Programas Informáticos
9.
Gerontologist ; 52(2): 189-98, 2012 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-22391870

RESUMEN

PURPOSE OF THE STUDY: This article explores a clash between incoming Baby Boomers and older residents in an active adult retirement community (AARC). We examine issues of social identity and attitudes as these groups encounter each other. DESIGN AND METHODS: Data are drawn from a multiyear ethnographic study of social relations in senior housing. Research at this site included in-depth, open-ended interviews (47), field notes (25), and participant observation in the field (500 hr). Research team biweekly discussions and Atlas.ti software program facilitated analysis. FINDINGS: We begin with a poignant incident that has continued to engender feelings of rejection by elders with each retelling and suggests the power and prevalence of ageism in this AARC. We identify three pervasive themes: (a) social identity and image matter, (b) significant cultural and attitudinal differences exist between Boomers and older residents, and (c) shared age matters less than shared interests. IMPLICATIONS: Our data clearly show the operation of ageism in this community and an equating of being old with being sick. The conflict between these two age cohorts suggests that cohort consciousness among Boomers carries elements of age denial, shared by the older old. It also challenges the Third Age concept as a generational phenomenon.


Asunto(s)
Envejecimiento , Viviendas para Ancianos , Prejuicio , Conducta Social , Identificación Social , Anciano , Envejecimiento/psicología , Antropología Cultural , Femenino , Humanos , Masculino , Persona de Mediana Edad , Características de la Residencia , Estigma Social , Estereotipo
10.
Acta cir. bras ; 25(3): 249-256, May-June 2010. ilus, tab
Artículo en Inglés | LILACS | ID: lil-546830

RESUMEN

PURPOSE: To evaluate the accuracy and reproducibility of magnetic resonance cholangiopancreatography (MRCP) in the detection of biliary complications in liver transplanted patients. METHODS: A study was conducted, with blinded review of 28 MRCP exams of 24 patients submitted to liver transplantation. The images were reviewed by two independent observers, at two different moments, regarding the degree of biliary tree visualization and the presence or absence of biliary complications. The MRCP results were compared, when negative, to at least 3 months of clinical and biochemical follow-up, and when positive, to the findings at surgery or endoscopic retrograde cholangiopancreatography (ERCP). RESULTS: The degree of intrahepatic biliary tree visualization was considered good or excellent in 78.6 percent and 82.1 percent of the exams by the two observers and visualization of the donor duct, recipient duct and biliary anastomosis was considered good or excellent in 100 percent of the exams, by both observers. Six biliary complications were detected (21.4 percent), all of them anastomotic strictures. Intra and interobserver agreement were substantial or almost perfect (kappa k values of 0.611 to 0.804) for the visualization of the biliary tree and almost perfect (k values of 0.900 to 1.000) for the detection of biliary complications. MRCP achieved 100 percent sensitivity, 95.45 percent specificity, 85.7 percent positive predictive value and 100 percent negative predictive value for the detection of biliary complications. CONCLUSIONS: MRCP is an accurate examination for the detection of biliary complications after orthotopic liver transplantation and it is a highly reproducible method in the evaluation of the biliary tree of liver transplanted patients.


OBJETIVO: Medir a acurácia e reprodutibilidade da colangiopancreatografia por ressonância magnética (CPRM) na avaliação da visibilização de complicações biliares em pacientes submetidos a transplantes hepáticos ortotópicos. MÉTODOS: Realizado estudo retrospectivo de 28 exames de CPRM de 24 pacientes submetidos a transplantes hepáticos. Os exames foram interpretados por dois observadores independentes, em dois momentos distintos, quanto ao grau de visibilização das estruturas estudadas e quanto à presença ou ausência de alterações nas vias biliares. Os resultados da CPRM foram comparados, nos casos de CPRM negativa, à evolução clínico-laboratorial por pelo menos 3 meses e, nos casos de CPRM alterada, aos achados de colangiopancreatografia retrógrada endoscópica (CPRE) e cirurgia, quando indicados. RESULTADOS: A visibilização das vias biliares intra-hepáticas foi considerada boa ou excelente em 78,6 por cento e 82,1 por cento dos exames pelos dois observadores. A visibilização da via biliar extra-hepática do doador e do receptor, bem como da anastomose biliar, foi considerada boa ou excelente em 100 por cento dos casos por ambos os observadores. Foram detectadas seis complicações biliares (21,4 por cento dos casos), todas elas estenoses anastomóticas. A concordância intra e intra-observador foi substancial ou quase perfeita (índices de kappa- k de 0,611 a 0,804) para a visualização das estruturas estudadas e quase perfeita (k de 0,900 a 1,000) para a detecção das complicações biliares. A CPRM apresentou sensibilidade de 100 por cento, especificidade de 95,45 por cento, valor preditivo positivo de 85,7 por cento e valor preditivo negativo de 100 por cento para a detecção de complicações biliares. CONCLUSÕES: A colangiopancreatografia por ressonância magnética (CPRM) é um exame acurado para a detecção de complicações biliares em pacientes submetidos a transplantes hepáticos ortotópicos por CPRM. Este exame configura-se como um método eficiente ...


Asunto(s)
Adolescente , Adulto , Anciano , Niño , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven , Enfermedades de los Conductos Biliares/diagnóstico , Pancreatocolangiografía por Resonancia Magnética , Trasplante de Hígado/efectos adversos , Complicaciones Posoperatorias/diagnóstico , Reacciones Falso Negativas , Reacciones Falso Positivas , Reproducibilidad de los Resultados , Estudios Retrospectivos , Sensibilidad y Especificidad , Estadísticas no Paramétricas , Adulto Joven
11.
Acta Cir Bras ; 25(3): 249-56, 2010 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-20498937

RESUMEN

PURPOSE: To evaluate the accuracy and reproducibility of magnetic resonance cholangiopancreatography (MRCP) in the detection of biliary complications in liver transplanted patients. METHODS: A study was conducted, with blinded review of 28 MRCP exams of 24 patients submitted to liver transplantation. The images were reviewed by two independent observers, at two different moments, regarding the degree of biliary tree visualization and the presence or absence of biliary complications. The MRCP results were compared, when negative, to at least 3 months of clinical and biochemical follow-up, and when positive, to the findings at surgery or endoscopic retrograde cholangiopancreatography (ERCP). RESULTS: The degree of intrahepatic biliary tree visualization was considered good or excellent in 78.6% and 82.1% of the exams by the two observers and visualization of the donor duct, recipient duct and biliary anastomosis was considered good or excellent in 100% of the exams, by both observers. Six biliary complications were detected (21.4%), all of them anastomotic strictures. Intra and interobserver agreement were substantial or almost perfect (kappa k values of 0.611 to 0.804) for the visualization of the biliary tree and almost perfect (k values of 0.900 to 1.000) for the detection of biliary complications. MRCP achieved 100% sensitivity, 95.45% specificity, 85.7% positive predictive value and 100% negative predictive value for the detection of biliary complications. CONCLUSIONS: MRCP is an accurate examination for the detection of biliary complications after orthotopic liver transplantation and it is a highly reproducible method in the evaluation of the biliary tree of liver transplanted patients.


Asunto(s)
Enfermedades de los Conductos Biliares/diagnóstico , Pancreatocolangiografía por Resonancia Magnética , Trasplante de Hígado/efectos adversos , Complicaciones Posoperatorias/diagnóstico , Adolescente , Adulto , Anciano , Niño , Reacciones Falso Negativas , Reacciones Falso Positivas , Femenino , Humanos , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados , Estudios Retrospectivos , Sensibilidad y Especificidad , Estadísticas no Paramétricas , Adulto Joven
12.
J Matern Fetal Neonatal Med ; 23(1): 60-8, 2010 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-19626568

RESUMEN

OBJECTIVE: To evaluate the concordance between two-dimensional ultrasonography (2DUS), three-dimensional ultrasonography (3DUS) and magnetic resonance imaging (MRI) in the assessment of lung volume in fetuses with urinary tract malformations (UTM). METHODS: This was a cross-sectional study involving 12 pregnancies between 19 and 34 weeks, with various fetal UTM. Pulmonary volume was obtained by 2DUS using the following equation: total lung volume = [right lung antero-posterior diameter (X) x transverse diameter (Y) x cranial-caudal diameter x 0.152 + left lung (X1) x (Y1) x (Z1) x 0.167]. Pulmonary volume by 3DUS was obtained using the virtual organ computer-aided analysis (VOCAL) method with a 30 degrees (VOL30), 18 degrees (VOL18) and 12 degrees (VOL12) rotation. A fast sequence of transverse lung section was also obtained by MRI. The intraclass correlation coefficient was used to evaluate the correlation between the three methods. The paired student t-test was used to compare the means. RESULTS: There was a strong correlation between the three methods, and the highest correlations were between MRI and VOL18 for the right (ICC = 0.913) and left (ICC = 0.947) lungs. A strong correlation was also found between the lung volumes obtained through MRI and VOL12 as well as VOL18 (p = 0.544 and 0.286, respectively). However, for the left lung there was only a correlation between MRI and VOL12 (p = 0.49). CONCLUSIONS: There is a good concordance between 3DUS (VOL12) and MRI in the evaluation of lung volume in fetuses with UTM.


Asunto(s)
Enfermedades Fetales/patología , Pulmón/embriología , Imagen por Resonancia Magnética , Ultrasonografía Prenatal/métodos , Sistema Urinario/anomalías , Sistema Urinario/embriología , Estudios Transversales , Femenino , Enfermedades Fetales/diagnóstico por imagen , Edad Gestacional , Humanos , Pulmón/diagnóstico por imagen , Pulmón/patología , Embarazo
13.
Rev. imagem ; 29(4): 161-163, out.-dez. 2007. ilus
Artículo en Portugués | LILACS | ID: lil-542273

RESUMEN

Nos últimos três anos foram realizadas 30.000 mamografias no Departamento de Diagnóstico por Imagem da Universidade Federal de São Paulo/Escola Paulista de Medicina, sendo que em 0,23% delas foi observado tecido mamário acessório. Relatamos um caso de paciente de 44 anos de idade, feminina, que apresentava nódulo endurecido, aderido ao subcutâneo, em topografia inframamária à direita. À ultra-sonografia observou-se imagem nodular sólida hipoecogênica, com contornos irregulares, medindo 1,4 cm. À ressonância magnética visualizou-se curva de realce tipo II (platô). Após biópsia, foi diagnosticado denocarcinoma mamário. O carcinoma nas mamas acessórias costuma apresentar aspecto histopatológico indiferenciado e disseminação mais precoce, determinando pior prognóstico. Por este motivo, é de fundamental importância sua detecção nos estágios iniciais, permitindo, dessa forma, a instituição precoce do tratamento e possibilitando maiores chances de cura.


Over the last three years 30,000 mammograms were performed in the Department of Diagnostic Imaging of Universidade Federal de São Paulo/Escola Paulista de Medicina. Accessory breast tissue was observed in 0.23% of the individuals. We report a case of a 44-year-old woman presenting a hard nodule adhered to the subcutaneous tissue in right inframammary topography. At ultrasonography, a hypoechogenic solid nodule with irregular contour measuring 1.4 cm was observed. Magnetic resonance imaging showed type II (plateau) dynamic curve. Breast adenocarcinoma was subsequently diagnosed by biopsy. Accessory breast carcinomas generally present with an ill-defined histopathological aspectand early dissemination. Early detection is essential to begin treatment in the initial stages, with better chances of cure.


Asunto(s)
Humanos , Femenino , Adulto , Adenocarcinoma , Coristoma , Espectroscopía de Resonancia Magnética , Mamografía , Neoplasias de la Mama
14.
J Endourol ; 21(11): 1303-7, 2007 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-18042019

RESUMEN

PURPOSE: To understand the advances that were made in the management of pheochromocytoma since laparoscopy was initiated at our institution. MATERIALS AND METHODS: Data for all patients who underwent surgical procedure for adrenal diseases had been recorded prospectively since September 2000, when laparoscopy was routinely initiated at our institution; all patients with a diagnosis of pheochromocytoma up to December 2005 had their data assessed (group 1). Charts for all patients with a diagnosis of pheochromocytoma who underwent surgery at our institution from 1990 to 1995 (group 2) were reviewed, and the data were compared with data from patients in group 1. RESULTS: In group 1, 24 patients with pheochromocytoma underwent 26 procedures at our institution, including five patients with extra-adrenal tumor and one patient with bilateral tumor; 18 adrenalectomies (one bilateral) were performed, and two extra-adrenal tumors were removed using a laparoscopic approach. In group 2, ten open adrenalectomies were performed in 9 patients (1 bilateral). The patients who underwent laparoscopy for either adrenal or extra-adrenal tumor had shorter operative times and hospital stay and less bleeding. CONCLUSIONS: Pheochromocytoma is a complex disease with potentially severe complications. Laparoscopic adrenalectomy can be safely performed for removal of either adrenal or extra-adrenal tumors. Patients spend a shorter time in the critical care unit after the procedure.


Asunto(s)
Neoplasias de las Glándulas Suprarrenales/cirugía , Laparoscopía , Feocromocitoma/cirugía , Adolescente , Adrenalectomía/métodos , Adulto , Anciano , Femenino , Humanos , Unidades de Cuidados Intensivos/estadística & datos numéricos , Tiempo de Internación , Masculino , Persona de Mediana Edad , Estudios Prospectivos
15.
Behav Res Methods Instrum Comput ; 35(1): 22-31, 2003 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-12723777

RESUMEN

Latent semantic analysis (LSA) is a computational model of human knowledge representation that approximates semantic relatedness judgments. Two issues are discussed that researchers must attend to when evaluating the utility of LSA for predicting psychological phenomena. First, the role of semantic relatedness in the psychological process of interest must be understood. LSA indices of similarity should then be derived from this theoretical understanding. Second, the knowledge base (semantic space) from which similarity indices are generated must contain 'knowledge' that is appropriate to the task at hand. Proposed solutions are illustrated with data from an experiment in which LSA-based indices were generated from theoretical analysis of the processes involved in understanding two conflicting accounts of a historical event. These indices predict the complexity of subsequent student reasoning about the event, as well as hand-coded predictions generated from think-aloud protocols collected when students were reading the accounts of the event.


Asunto(s)
Inteligencia Artificial , Psicología Experimental/estadística & datos numéricos , Semántica , Adolescente , Interpretación Estadística de Datos , Humanos , Procesos Mentales , Lectura
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