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Search Results: 1 - 10 of 2487 matches for " Stella Maris Pezzotto "
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Analisis coste-efectividad de distintos métodos de diagnóstico por imagen del tromboembolismo pulmonar agudo
Maris Batallés,Stella; Lisandro Villavicencio,Roberto; Maris Pezzotto,Stella;
Revista Espa?ola de Salud Pública , 2009, DOI: 10.1590/S1135-57272009000300006
Abstract: background. the optimal diagnostic test for detecting acute pulmonary embolism (ape) is still under discussion. the ventilation /perfusion scanning has been the preferred examination for several decades, but with the development of new tests the diagnostic posibilities have increased. it is necessary to evaluate them from the cost-effectiveness perspective. the goal of this study was to evaluate several methods of imaging diagnosis so as to determine the most cost-effective for detecting ape. methods. cost-effectiveness (ce) analysis using a decision tree to model various diagnostic test (v/q lung scan, spiral ct, angiography by mdct, mri and conventional arteriography). sensitivity and specificity values, and positive and negative predictive values of diagnostic tests were calculated. expected outcome: "new ape case detected." the direct costs were evaluated in eurosos (euros), including the secondary complications of diagnostic methods. to assess the robustness of the findings, a one way sensitivity analysis was performed. results. the most cost-effective diagnostic test was angiography by mdct. no diagnostic test were eliminated by extended dominance. the crude rate of ce for mdct was 486 euros per case of ape detected. the marginal cost between spiral ct and v / q lung scan was euros 103 for 8 cases of ape detected additionally, while the marginal cost between mdct and spiral ct was 229 euros to detect an additional case of ape. conclusions. the most cost-effective diagnostic test was the mdct; this finding showed to be robust in relationship to sensitivity, specificity and costs changes. however, the incremental c-e analysis showed that mdct was capable to detect only one additional case of ape than spiral ct, with an incremental cost of 229 euros. when peripheral branches are affected, high negative predictive value of the mdct justify its conduct.
HáBITOS ALIMENTARIOS Y RIESGO DE CANCER DE PIEL NO MELANOMA
Dagatti,María Susana; Bertola Compagnucci,Agustina; Pezzotto,Stella Maris;
Revista chilena de nutrición , 2011, DOI: 10.4067/S0717-75182011000100002
Abstract: a case-control study was carried out in order to analyze the association between diet and risk of non melanoma skin cancer -basal cell carcinoma (bcc) and squamous cell carcinoma (scc), with adjustments for demographic, anthropometric and phenotypic characteristics, sunburns history, skin cancerfamily history, sun-exposure history and skin sensitivity to sun exposure. a full-body skin examination was performed. dietary data were obtained applying a standardized semi-quantitative questionnaire of consumption frequency. cases (n=27; age: 65,5+15,1 years) and controls (n=37; age: 63,9+12,3 years) were attended at the same facilities. a decreased risk ofbcc and scc tumors (adjusted odd ratio=0.10; ic 95%= 0.02-0.63; p=0.01) was found for high intakes of green leafy vegetables (more than 40 gr/day). however, results obtained for fruits, cruciferous, vitamin a and carotene-rich vegetables and other vegetables were not statistically significant.
Prevalencia del habito de fumar en jóvenes y sus padres: asociaciones relevantes con educacion y ocupación
Poletto,Leonor; Pezzotto,Stella Maris; Morini,Julio; Andrade,Jorge;
Revista de Saúde Pública , 1991, DOI: 10.1590/S0034-89101991000500011
Abstract: rosario, with a million inhabitants, is the second major urban concentration in argentina and serves as the commercial and industrial center for a large area. in view of the lack of information on the present prevalence of smoking in this area as for the country as a whole, a study was performed on random samples of young people and university students of medicine and economics, as well as on their parents. information was obtained on their life smoking habits, education and occupation. the prevalence of the habit was higher: a) in men, both in the youngsters and their parents; b) in medical students than in those of the economic sciences; c) in parents with university education. the smoking habit of these subjects and parents was highly associated (p < 0.001) in the sample of young people, although no association was found between the prevalence of smoking among university students and their parents. peer smoking was the main factor influencing the onset of cigarette smoking given by 69% of the subjects. knowledge of specific adverse health effects of smoking was poor. attitudes toward restrictive measures were highly associated (p < 0.001) with the non-smoker category. based on these findings, we conclude that while there is a need for educational programs for the population in general, the university as a whole and specifically the school of medicine should implement a program to increase knowledge and awareness on this public health problem.
HáBITOS ALIMENTARIOS Y RIESGO DE CANCER DE PIEL NO MELANOMA DIET AND RISK OF NON MELANOMA SKIN CANCER
María Susana Dagatti,Agustina Bertola Compagnucci,Stella Maris Pezzotto
Revista Chilena de Nutricíon , 2011,
Abstract: Mediante un dise o de casos y controles se evaluó si la dieta habitual modifica el riesgo de desarrollar cáncer de piel no melanoma: carcinomas basocelulares y carcinomas espinocelulares. En la consulta se consignaron datos demográficos, características fenotípicas y antropométricas, antecedentes de quemadura solar, antecedentes familiares de cáncer de piel y hábitos de exposición solar, y se realizó un exhaustivo examen físico cutáneo. La dieta fue evaluada por cuestionarios semi-cuantitativos de frecuencia de consumo. Se estudiaron 27 casos (edad: 65,5±15,1 a os) y 37 controles (63,9±12,3) que asistieron a las mismas instituciones por otras patologías. La ingesta alta de vegetales de hojas verdes (más de 40 g/d) actuaría como factor protector (Odd Ratio ajustado= 0,10; IC 95%= 0,02-0,63; p=0,01), modificando el efecto negativo de la exposición solar. En cambio, los resultados obtenidos para frutas, crucíferas, vegetales ricos en vitamina A y carotenos y otros vegetales no resultaron estadísticamente significativos. A case-control study was carried out in order to analyze the association between diet and risk of non melanoma skin cancer -basal cell carcinoma (BCC) and squamous cell carcinoma (SCC), with adjustments for demographic, anthropometric and phenotypic characteristics, sunburns history, skin cancerfamily history, sun-exposure history and skin sensitivity to sun exposure. A full-body skin examination was performed. Dietary data were obtained applying a standardized semi-quantitative questionnaire of consumption frequency. Cases (n=27; age: 65,5+15,1 years) and controls (n=37; age: 63,9+12,3 years) were attended at the same facilities. A decreased risk ofBCC and SCC tumors (Adjusted Odd Ratio=0.10; IC 95%= 0.02-0.63; p=0.01) was found for high intakes of green leafy vegetables (more than 40 gr/day). However, results obtained for fruits, cruciferous, vitamin A and carotene-rich vegetables and other vegetables were not statistically significant.
Medición del espesor miointimal carotídeo como predictor de riesgo de accidente isquémico transitorio
Batallés,Stella Maris; Heredia,María Natalia; Della Rosa,Luciana; Capomasi,Mauricio; Villavicencio,Roberto; Pezzotto,Stella Maris;
Revista argentina de radiolog?-a , 2011,
Abstract: to determine if the risk of transient ischemic attack (tia) is higher in patients with abnormal values of carotid intima-media thickness (cimt). materials and methods. we evaluated 168 patients with and without tia by ultrasound of the neck vessels, measuring cimt. case and controls were matched according to different variables. statistical analysis: continuous variables (mean ± sd) were compared using the student's t test for related samples. categorical variables (percentages) were compared using the mcnemar tests. in order to assess cimt as a predictor of tia, two models of conditional logistic regression were adjusted, considering cimt both as a continuous variable and as a binary variable: normal cimt (<1 mm) vs. pathologic (>1 mm). a roc curve was performed to determine the discriminative capacity of cimt, estimating the sensitivity and specificity for different cutoff values. results. cimt value: cases 1.03±0.31 mm (95% ci: 0.971.10); controls 0.77±0.27 mm (95% ci: 0.71-0.83); p<0.001. the risk of tia was about 9 fold higher in patients with abnormal cimt (or=8.8; p<0.001). with 95 % confidence interval we were able to affirm that for each 0.05 mm increase in cimt, the risk of tia increased between 16 and 44%. area under roc curve: 0.75 (95% ci: 0.67-0.82). conclusions. abnormal values of cimt are significantly associated with a higher probability of suffering a tia. according to our experience, the carotid wall us examination would allow to predict cerebrovascular preclinical disease.
Proteína C reactiva como factor pronóstico de mortalidad en la unidad de cuidados intensivos
Prieto,María Florencia; Kilstein,Jorge; Bagilet,Daniel; Pezzotto,Stella Maris;
Medicina Intensiva , 2008,
Abstract: objective. to determine c-reactive protein (crp) prognostic value and in patients admitted to the intensive care unit (icu). design. retrospective cohort study. patients. a total of 879 patients admitted to the icu for any cause over a 2-year period and who were hospitalized at least for 24 hours were studied. method. crp levels were determined on admission and the value of the apache ii score at 24 hours. the crp values were correlated with apache ii score along with other variables (gender, age, disease at onset, length of stay). results. the highest crp levels were those from subjects admitted for an infectious disease or shock-sepsis-multiple organ failure. patients with crp values greater than 10 mg/dl were older, had higher apache ii score, remained hospitalized for more time and the mortality rate was higher in this group (p <0.0001). crp predictive value for mortality was higher as it increased in level with a specificity of 72.3% when these were over 10 mg/dl. conclusions. crp is an early and specific indicator of outcome, qualities that make it useful as a routine test of patients at admission to the icu.
Proteína C reactiva como factor pronóstico de mortalidad en la unidad de cuidados intensivos C-Reactive protein as a marker of mortality in intensive care unit
María Florencia Prieto,Jorge Kilstein,Daniel Bagilet,Stella Maris Pezzotto
Medicina Intensiva , 2008,
Abstract: Objetivo. Determinar el valor pronóstico de la proteína C reactiva (PCR) en pacientes ingresados en una unidad de cuidados intensivos (UCI). Dise o. Cohorte retrospectiva. Pacientes. Se estudió a 879 pacientes ingresados en la UCI por cualquier causa durante 2 a os y que permanecieron al menos 24 horas. Método. Se determinó la concentración de PCR al ingreso y se calculó a su vez la puntuación APACHE II a las 24 horas. Los valores de PCR fueron correlacionados con la puntuación APACHE II junto con otras variables (sexo, edad, enfermedad de ingreso, días de ingreso). Resultados. Las concentraciones de PCR más altas se obtuvieron de los sujetos que ingresaron por enfermedad infecciosa o shock séptico-fallo multiorgánico. Los pacientes con valores de PCR 10 mg/dl tenían un promedio de edad y puntuación APACHE II mayores, permanecieron internados por más tiempo y la mortalidad fue más elevada (p <0,0001). El valor predictivo de muerte fue mayor a medida que aumentaron los valores de PCR, con una especificidad del 72,3% cuando la cifra superaba los 10 mg/dl. Conclusiones. La PCR constituye un marcador evolutivo precoz, específico y de bajo costo, cualidades que permiten proponerlo como examen sistemático al ingreso de los pacientes en la UCI. Objective. To determine C-reactive protein (CRP) prognostic value and in patients admitted to the intensive care unit (ICU). Design. Retrospective cohort study. Patients. A total of 879 patients admitted to the ICU for any cause over a 2-year period and who were hospitalized at least for 24 hours were studied. Method. CRP levels were determined on admission and the value of the APACHE II score at 24 hours. The CRP values were correlated with APACHE II score along with other variables (gender, age, disease at onset, length of stay). Results. The highest CRP levels were those from subjects admitted for an infectious disease or shock-sepsis-multiple organ failure. Patients with CRP values greater than 10 mg/dl were older, had higher APACHE II score, remained hospitalized for more time and the mortality rate was higher in this group (p <0.0001). CRP predictive value for mortality was higher as it increased in level with a specificity of 72.3% when these were over 10 mg/dl. Conclusions. CRP is an early and specific indicator of outcome, qualities that make it useful as a routine test of patients at admission to the ICU.
Hipercementosis Apicales y No Apicales en Raíces Dentarias Humanas
Kohli,Alicia; Pezzotto,Stella M; Poletto,Leonor;
International Journal of Morphology , 2011, DOI: 10.4067/S0717-95022011000400032
Abstract: secondary cementum is deposited in a root apical third throughout the lifespan of a tooth to compensate occlusal erosion, keeping dental pieces in occlusion contact. pearls are more difficult to spot, found by x-rays or after extraction. their ovoid or spherical aspect is well outlined, hard to touch, and located in different thirds of the root. our objective was to compare physical and radiological dental normal roots characteristics with those presenting this type of formations that alter radicular anatomy. we used 20 normal roots and 20 pearl shapes. variables compared: age, sex, previous general pathologies and periodontals; extracted tooth type, dental arch location, extraction cause, consistency characteristics, color, aspect and texture of all roots and pearls. radiological image was crucial for incorporation of teeth with cementum excess. proportions between normal pieces and pearls were calculated with fisher's exact test, with 5% significance level. average age was 61years (16-79), and male proportion was 42.5% and 57.5% female. general pathology presented 37.5 % and periodontal 55%, more extracted teeth were right side upper premolars 15%. caries were extraction chief motive 72.5%. roots were of hard consistency and smooth texture in both groups; nacreous aspect was 65%, clear colors 75%. pearl consistency was hard in all of them; white color 60% and root similar color 40%; nacreous aspect 75% and smooth texture 90%. in radiographs was observed that cementum did not differ from dentine in 85% of pearls and in 60% of normal roots (p=0.004). adults can develop cementum anomalies located in another apex sector although the root physical characteristics are considered inside normal parameters.
Blood lipid associations in 18 year-old men
Poletto,Leonor; Pezzotto,Stella; Morini,Julio;
Revista de Saúde Pública , 1992, DOI: 10.1590/S0034-89101992000500003
Abstract: the association of cigarette smoking, physical activity at work, and social class with total cholesterol and with high and low density lipoprotein cholesterol were examined in a random sample of 238 males, of 18 years of age, of rosario, argerntina. the mean (mg/dl) total serum cholesterol of the whole sample was 174.7, the high density lipoprotein cholesterol 52.8, and the low density lipoprotein cholesterol 121.5. black tobacco consumers, evenly distributed by social class, had higher levels of total and low density lipoprotein cholesterol. total cholesterol was higher in the high social class, differently from what smokers' distribution by social class, would lead one to expect. while a highly negative association was found between social class and physical activity at work, there were no significant diferences in lipoprotein levels between manual and non-manual workers. it is possible that the nutritional differences by social class still prevail over the smoking habit in their influence on the lipoprotein levels in these subjects.
Hipercementosis Apicales y No Apicales en Raíces Dentarias Humanas Apical and Non-Apical Hypercementosis in Human Dental Root
Alicia Kohli,Stella M Pezzotto,Leonor Poletto
International Journal of Morphology , 2011,
Abstract: El cemento secundario del ápice radicular se deposita en forma lenta y continua durante toda la vida útil del diente, siendo su función compensar el desgaste producido por la masticación. En raras ocasiones podemos hallar en la raíz dental, a posteriori de una extracción dentaria, excesos de cementos redondeados u ovalados, bien delimitados y duros al tacto, ubicados en un sector radicular diferente al ápice. Nuestro objetivo fue comparar las características físicas y radiológicas de raíces dentales normales con aquéllas que presentan este tipo de formaciones que alteran la anatomía radicular. Fueron incluidos 20 dientes adultos con raíces normales y 20 con raíces donde se visualizaron estos depósitos. Las variables investigadas fueron edad, sexo, patologías generales y periodontales previas, tipo de diente extraído, ubicación en el arco dental, motivo de extracción, características de consistencia, color, aspecto y textura de todas las raíces. La imagen radiológica fue crucial para la inclusión de dientes con exceso de cemento. Se recolectó un total de 40 dientes adultos, cuya edad promedio fue de 61a os (16-79), 42.5% masculinos y 57.5% femeninos. Patología general presentó el 37.5% y periodontal el 55%, los dientes mas extraídos fueron premolares superiores del lado derecho 15%. La caries fue causa principal de extracción 72.5%. En ambos grupos las raíces fueron de consistencia dura y textura lisa. El aspecto nacarado fue de 70% y 60%, los colores claros 45% y 75%, respectivamente. En las radiografías se observó que el cemento no se diferenció de la dentina en el 40% y 85% de cada grupo (p=0.004). Los adultos pueden desarrollar anomalías de cemento ubicadas en otro sector del ápice si bien las características físicas de la raíz se consideran dentro de parámetros normales. Secondary cementum is deposited in a root apical third throughout the lifespan of a tooth to compensate occlusal erosion, keeping dental pieces in occlusion contact. Pearls are more difficult to spot, found by X-rays or after extraction. Their ovoid or spherical aspect is well outlined, hard to touch, and located in different thirds of the root. Our objective was to compare physical and radiological dental normal roots characteristics with those presenting this type of formations that alter radicular anatomy. We used 20 normal roots and 20 pearl shapes. Variables compared: age, sex, previous general pathologies and periodontals; extracted tooth type, dental arch location, extraction cause, consistency characteristics, color, aspect and texture of all roots and pearls. Radiological im
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