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1.
Int. j. med. surg. sci. (Print) ; 8(2): 1-17, jun. 2021. tab, ilus, graf
Article in English | LILACS | ID: biblio-1284420

ABSTRACT

Background: Echocardiographic predictors for new onset heart failure in patients with ischemic heart disease with reduced left ventricular ejection fraction (HFrEF) or with preserved left ventricular ejection fraction (HFpEF) in Ethiopian and Sub-Saharan African is not well-known.Methods: Two hundred twenty-eight patients with ischemic heart disease were retrospectively recruited and followed. Analysis on baseline clinical and echocardiographic characteristics of patients, and risk factors for new onset HFpEF and new onset HFrEF were done. The exclusion criteria were known heart failure at baseline and those who did not have echocardiography data.Results: During the follow up period, heart failure developed in 62.2% (61/98) of ischemic heart disease patients with preserved left ventricular ejection fraction and in 70.1% (92/130) of ischemic heart disease patients with reduced left ventricular ejection fraction. We did not find significant difference between HFrEF and HFpEF in time to new onset heart failure. Systolic blood pressure, diastolic blood pressure, diabetes, left atrium and diastolic left ventricular dimension had significant association with new onset HFrEF on univariate regression analysis. Whereas new onset HFpEF was significantly associated with age, sex, presence of hypertension, Systolic blood pressure and diastolic left ventricular dimension. On cox regression analysis diastolic left ventricular dimension was associated with both new onset HFpEF and HFrEF. Age, diabetes, and dimension of left atrium were also associated with HFrEF.Conclusion: This cohort study in ischemic heart disease patients suggests a key role for the diastolic left ventricular dimension, left atrium size, diabetes, sex and age as predictors of new onset HFrEF and HFpEF. Strategies directed to prevention and early treatment of diabetes, dilatation of left ventricle and left atrium may prevent a considerable proportion of HFrEF or HFpEF.


Antecedentes: Los predictores ecocardiográficos de nuevos eventos de insuficiencia cardiaca en pacientes con cardiopatía isquémica con fracción de eyección ventricular preservada (HFpEF) o con fracción de eyección ventricular reducida (HFrEF) no son bien conocidos en la Africa etíope y subsahariana.Métodos: Doscientos veintiocho pacientes con cardiopatía isquémica fueron reclutados y seguidos retrospectivamente. Se realizaron análisis sobre las características clínicas y ecocardiográficas basales de los pacientes, así como los factores de riesgo para un nuevo evento de HFpEF y un nuevo evento de HFrEF. Los criterios de exclusión fueron insuficiencia cardíaca conocida al inicio del estudio y aquellos que no tenían datos de ecocardiografía.Resultados: Durante el período de seguimiento, la insuficiencia cardíaca se desarrolló en el 62,2% (61/98) de pacientes con cardiopatía isquémica con fracción de eyección ventricular izquierda preservada y en el 70,1% (92/130) de pacientes con cardiopatía isquémica con fracción de eyección ventricular izquierda reducida. No encontramos diferencias significativas entre HFrEF y HFpEF en el tiempo hasta la nueva aparición de insuficiencia cardíaca. La presión arterial sistólica, la presión arterial diastólica, la diabetes y las dimensiones de la aurícula iquierda y del ventrículo izquierdo en diástole tuvieron una asociación significativa con nuevos eventos de HFrEF en el análisis de regresión univariada. Mientras que un nuevo evento de HFpEF se asoció significativamente con la edad, el sexo, la presencia de hipertensión, la presión arterial sistólica y la dimensión ventricular izquierda diastólica. En el análisis de regresión de cox, la dimensión ventricular izquierda diastólica se asoció con HFpEF de nuevo inicio y HFrEF. La edad, la diabetes y la dimensión de la aurícula izquierda también se asociaron con HFrEF. Conclusión: Este estudio de cohorte en pacientes con cardiopatía isquémica sugiere un papel clave para la dimensión ventricular izquierda diastólica, el tamaño de la aurícula izquierda, la diabetes, el sexo y la edad como predictores de un nuevo evento de HFrEF y HFpEF. Las estrategias dirigidas a la prevención y el tratamiento temprano de la diabetes, la dilatación del ventrículo izquierdo y la aurícula izquierda pueden prevenir una proporción considerable de HFrEF o HFpEF.


Subject(s)
Humans , Male , Female , Middle Aged , Aged , Echocardiography/methods , Myocardial Ischemia/diagnostic imaging , Stroke Volume , Tobacco Use Disorder , Multivariate Analysis , Predictive Value of Tests , Regression Analysis , Retrospective Studies , Cohort Studies , Follow-Up Studies , Ventricular Function, Left , Age Factors , Myocardial Ischemia/physiopathology , Risk Assessment/methods , Heart Disease Risk Factors
2.
Actual. SIDA. infectol ; 29(105): 34-41, 2021 mar. fig, tab
Article in Spanish | LILACS, BINACIS | ID: biblio-1348955

ABSTRACT

Introducción: En COVID-19 grave, identificar pacientes con mayor riesgo de ventilación mecánica (VM) ayuda a optimizar el manejo. Materiales y métodos: Análisis retrospectivo de características clínico-epidemiológicas de pacientes con COVID-19 ingresados a UTI entre marzo/septiembre 2020. Se utilizó estadística descriptiva, análisis univariado (p significativa <0.05) y multivariado (variables significativas en el univariado).Resultados: Ingresaron 114 pacientes, 91 (79,8%) hombres, edad promedio 54,6 ±14,8 años. 66 (57,9%) eran obesos, 44 (38,6%) ≥ 60 años, 38 (33,3%) hipertensos (33,3%) y 28 (24,6%) diabéticos. 39 (23%) tenían ferritina elevada, 62 (76,5%) linfopenia y 33 (41,3%) LDH aumentada. Mortalidad global 34%. 72 pacientes (63,1%) requirieron VM. Los predictores independientes de requerimiento de VM en el análisis multivariado fueron sexo masculino, edad ≥60 años, diabetes, linfopenia y ferritina y LDH aumentadas. Conclusiones: En pacientes con COVID-19 grave, los predictores independientes de necesidad de VM fueron sexo masculino, edad ≥ 60 años, diabetes, niveles elevados de ferritina y LDH y linfopenia


Introduction: In severe COVID-19, identifying patients with a higher risk of mechanical ventilation (MV) helps to optimize management.Materials and methods: Retrospective analysis of clinical-epidemiological characteristics of patients with COVID-19 admitted to ICU between March / September 2020. Descriptive statistics, univariate and multivariate analysis were used. Results: 114 patients were admitted, 91 (79.8%) were men, mean age 54.6 ± 14.8 years. 66 (57.9%) were obese, 44 (38.6%) ≥60 years, 38 (33.3%) were hypertensive (33.3%) and 28 (24.6 %) diabetics. 39 (23%) had elevated ferritin, 62 (76.5%) had lymphopenia, and 33 (41.3%) had increased LDH. Overall mortality 34%. 72 patients (63.1%) required MV. The independent predictors of MV requirement in the multivariate analysis were male sex, age ≥60 years, diabetes, lymphopenia, and increased ferritin and LDH.Conclusions: In patients with severe COVID-19, the independent predictors of the need for MV were male sex, age ≥ 60 years, diabetes, elevated levels of ferritin and LDH, and lymphopenia


Subject(s)
Humans , Middle Aged , Aged , Aged, 80 and over , Oxygen Inhalation Therapy , Respiration, Artificial , Multivariate Analysis , Retrospective Studies , Risk Assessment , COVID-19 Testing , COVID-19/therapy , Intensive Care Units
3.
Rev. Bras. Saúde Mater. Infant. (Online) ; 21(supl.1): 157-165, Feb. 2021. tab
Article in English | LILACS | ID: biblio-1155301

ABSTRACT

Abstract Objectives: to analyze the lethality and clinical characteristics in Pernambuco women with neoplasia that were infected by SARS-CoV-2. Methods: a cross-sectional, retrospective study with female patients with neoplasm sin the state of Pernambuco registered and made available by the Secretariat of Planning and Management of the State of Pernambuco (SEPLAG PE). Secondary data from public domain notifications and the independent factors associated with death were analyzed through logistic regression. The value ofp<0.25 was considered significant in the bivariate analysis and for a multivariate analysis, the value ofp<0.05 was considered significant. Results: forty-nine women died. The mean age and standard deviation were 58.75 ± 20.93 years. 55.86% of the patients were 60 years old or more. The overall lethality rate was 72.06% (CI95%=59.8 - 82.2). The most prevalent symptoms were fever (70.59%), cough (58.82%), dyspnea (57.35%) and O2 saturation less than 95% (48.53%). Conclusions: female patients, with cancer and infected by SARS-CoV-2 are particularly susceptible to death, regardless of the presence of comorbidities or age, with peripheral O2 saturation <95% being the only independent factor associated with death in this group.


Resumo Objetivos: analisar a letalidade e características clínicas em mulheres pernambucanas portadoras de neoplasia que apresentaram infecção por SARS-CoV-2. Métodos: estudo de corte transversal, retrospectivo com pacientes do sexo feminino, portadoras de neoplasias no estado de Pernambuco com registros disponibilizados pela Secretaria de Planejamento e Gestão do Estado de Pernambuco. Analisou-se dados secundários de notificações de domínio público e os fatores independentes associados ao óbito através de regressão logística. Foi considerado significativo o valor de p<0,25 na análise bivariada e para a análise multivariada foi considerado significativo o valor de p<0,05. Resultados: quarenta e nove mulheres vieram a óbito. A média da idade e desvio padrão foram 58, 75 ± 20,93 anos. 55,86% das pacientes tinham 60 anos ou mais. A taxa de letalidade global foi de 72,06% (IC95%= 59,8 - 82,2). Os sintomas mais prevalentes foram febre (70,59%), tosse (58,82%), dispneia (57,35%) e saturação de O2 <95% (48,53%). Conclusão: pacientes do sexo feminino, com câncer e infectadas pelo SARS-CoV-2 são particularmente suscetíveis a óbito, independentemente da presença de comorbidades ou da idade, sendo a saturação periférica de O2 <95% o único fator independente associado ao óbito nesse grupo.


Subject(s)
Humans , Female , Comorbidity , Risk Factors , SARS-CoV-2 , COVID-19/epidemiology , Neoplasms/diagnosis , Neoplasms/mortality , Brazil/epidemiology , Logistic Models , Indicators of Morbidity and Mortality , Multivariate Analysis , Mortality
4.
Rev. argent. salud publica ; 13: 1-10, 5/02/2021.
Article in Spanish | LILACS, BINACIS, ARGMSAL | ID: biblio-1150807

ABSTRACT

INTRODUCCIÓN: las lesiones y muertes de tránsito constituyen un problema importante de salud pública. El presente trabajo se propuso analizar, desde una perspectiva multidimensional, los datos oficiales sobre fallecidos por siniestros viales en la provincia de Buenos Aires. En primer lugar, se buscó construir una tipología de siniestros viales, y, en segundo lugar, se analizó la distribución de los conglomerados en distintas zonas de la provincia. MÉTODOS: se realizó un estudio no experimental, transversal y correlacional. Se aplicaron métodos de clasificación jerárquica a datos registrados por la Unidad del Observatorio y Estadísticas en Seguridad Vial; (n original = 1369, n luego de la depuración de datos = 1154). Los conglomerados resultantes se analizaron luego por región sanitaria. RESULTADOS: los resultados sugirieron ocho grupos relativamente homogéneos de víctimas con perfiles diferenciables de siniestralidad. Los conglomerados más importantes fueron dos: uno correspondiente a personas de sexo masculino, jóvenes y conductores de moto que fallecen en siniestros urbanos, y otro caracterizado por conductores de automóviles y adultos, también de sexo masculino, que fallecen en siniestros interurbanos. Los grupos se distribuyeron de manera diferente según la región sanitaria, aunque se advirtieron dos grandes perfiles: uno correspondiente al Gran Buenos Aires y otro al interior de la provincia. DISCUSIÓN: los resultados pueden ofrecer una base de segmentación útil para orientar intervenciones focalizadas en grupos de usuarios viales.


Subject(s)
Argentina , Accidents, Traffic , Cluster Analysis , Multivariate Analysis
5.
Rev. Ciênc. Plur ; 7(1): 1-13, jan. 2021. tab
Article in Portuguese | LILACS, BBO | ID: biblio-1147538

ABSTRACT

Introdução: A ocorrência de multimorbidade, a qual corresponde ao acúmulo de doenças crônicas, é considerada um problema de saúde pública e suas consequências na saúde bucal carecem de evidências científicas em grandes populações. Objetivo: Avaliar o impacto da multimorbidade nas condições de saúde bucal em idosos brasileiros. Método: Realizou-se um estudo transversal e de base populacional, utilizando a base de dados da Pesquisa Nacional de Saúde. A presença de multimorbidade em idosos foi considerada quando o mesmo possuía um diagnóstico de duas ou mais doenças crônicas. Com relação às condições de saúde bucal, essas foram coletadas a partir das variáveis estudadas na referida pesquisa. O teste Qui-quadrado foi utilizado para a análise dos dados e em seguida as razões de prevalência foram ajustadas por meio da regressão múltipla de Poisson. Resultados: Participaram 11.697 idosos e, desses, 53,1% possuíam multimorbidade. Na análise multivariada, observou-se que a presença de multimorbidade em idosos predispôs a um relato negativo da autopercepção de saúde bucal (p=0,025), à dificuldade de se alimentar devido a problemas dentários (p0,001), a perder totalmente os dentes superiores (p0,001) e a escovar os dentes ou próteses pelo menos uma vez ao dia (p=0,025). Conclusão:Diante dos resultados, conclui-se que a maioria das condições de saúde bucal, assim como a autopercepção das mesmas apresentam-se piores na presença de multimorbidade na população idosa (AU).


Introduction:The occurrence of multimorbidity, which corresponds to the accumulation of chronic diseases, is considered a public health problem and its consequences on oral health lack scientific evidence in large populations.Objective:To evaluate the impact of multimorbidity on oral health conditions in elderly Brazilians.Methods:A cross-sectional and population-based study was carried out, using the database of the National Health Survey. The presence of multimorbidity in the elderly was considered when they had adiagnosis of two or more chronic diseases. Regarding oral health conditions, these were collected from the variables studied in the National Health Survey. The Chi-square test was used for data analysis and then the prevalence ratios were adjusted using Poisson multiple regression.Results:11,697 elderly people participated and, of these, 53.1% had multimorbidity. In the multivariate analysis, it was observed that the presence of multimorbidity in the elderly predisposed to a negative report of self-perceived oral health (p=0.025), the difficulty of eating due to dental problems (p0.001), to lose teeth completely (p0.001)and brushing teeth or dentures at least once a day (p=0.025). Conclusions:In view of the results, it is concluded that most oral health conditions, as well as their self-perception, are worse in the presence of multimorbidity in the elderly population (AU).


Introducción:La aparición de multimorbilidad, que corresponde a la acumulación de enfermedades crónicas, se considera un problema de salud pública y sus consecuencias sobre la salud bucalcarecen de evidencia científica en grandes poblaciones. Objetivo:Evaluar el impacto de la multimorbilidad en las condiciones de salud bucal en los brasileños de edad avanzada. Método:Se realizó un estudio transversal y basado en la población, utilizando la base de datos de la Encuesta Nacional de Salud. Se consideró la presencia de multimorbilidad en los ancianos cuando tenían un diagnóstico de dos o más enfermedades crónicas. En cuanto a las condiciones de salud bucal, se obtuvieron de las variables estudiadas en el Encuesta Nacional de Salud. La prueba de Chi-cuadrado se usó para el análisis de datos y luego las razones de prevalencia se ajustaron mediante regresión múltiple de Poisson. Resultados:Participaron 11.697 personas mayores y, de estos, 53.1% tenían multimorbilidad. En el análisis multivariante, se observó que la presencia de multimorbilidad en los ancianos predispone a un informe negativo de autopercepción de la salud bucal (p=0,025), la dificultad de comer debido a problemas dentales (p0,001), para perder los dientes por completo (p0,001) y cepillarse los dientes o las dentaduras postizas al menos una vez al día (p=0,025).Conclusiones:En vista de los resultados, se concluye que la mayoría de las afecciones de salud bucal, así como su autopercepción, son peores en presencia de multimorbilidad en la población de edad avanzada (AU).


Subject(s)
Humans , Male , Female , Middle Aged , Aged , Aged, 80 and over , Periodontal Diseases/pathology , Brazil/epidemiology , Aged , Oral Health , Multimorbidity , Chi-Square Distribution , Cross-Sectional Studies/methods , Multivariate Analysis , Health Surveys , Statistics, Nonparametric , Research Report
6.
Article in Chinese | WPRIM | ID: wpr-879161

ABSTRACT

Three cancer cell lines including gastric cancer SGC-7901, HGC-27, and MGC-803 cells were employed to evaluate the bioactivity of seven Dendrobium species. Simultaneously, these Dendrobium species were assessed with UPLC-Q-TOF-MS, and 504 common peaks were found. Based on the hypothesis that biological effects varied with differences in components, multivariate relevance analysis for chemical component-activity relationship of Dendrobium, including grey relation(GRA) and partial least squares(PLS) analysis were performed to evaluate the contribution of each identified component. The target peaks were identified by standards toge-ther with databases of Dendrobium, Nature Chemistry, MassBank, etc. Finally, four active components, including 3,5,9-trihydroxy-23-methylergosta-7,22-dien-6-one, diacylglycerol(14∶1/22∶6/0∶0), pipercitine, and 22-tricosenoic acid, might have negative effect on the growth of gastric cancer cells.


Subject(s)
Dendrobium , Humans , Least-Squares Analysis , Multivariate Analysis , Stomach Neoplasms/drug therapy
7.
Article in English | WPRIM | ID: wpr-877761

ABSTRACT

INTRODUCTION@#Frontline healthcare workers (HCWs) exposed to coronavirus disease 2019 (COVID-19) are at risk of psychological distress. This study evaluates the psychological impact of COVID-19 pandemic on HCWs in a national paediatric referral centre.@*METHODS@#This was a survey-based study that collected demographic, work environment and mental health data from paediatric HCWs in the emergency, intensive care and infectious disease units. Psychological impact was measured using the Depression, Anxiety, Stress Scale-21. Multivariate regression analysis was performed to identify risk factors associated with psychological distress.@*RESULTS@#The survey achieved a response rate of 93.9% (430 of 458). Of the 430 respondents, symptoms of depression, anxiety and stress were reported in 168 (39.1%), 205 (47.7%) and 106 (24.7%), respectively. Depression was reported in the mild (47, 10.9%), moderate (76, 17.7%), severe (23, 5.3%) and extremely severe (22, 5.1%) categories. Anxiety (205, 47.7%) and stress (106, 24.7%) were reported in the mild category only. Collectively, regression analysis identified female sex, a perceived lack of choice in work scope/environment, lack of protection from COVID-19, lack of access to physical activities and rest, the need to perform additional tasks, and the experience of stigma from the community as risk factors for poor psychological outcome.@*CONCLUSION@#A high prevalence of depression, anxiety and stress was reported among frontline paediatric HCWs during the COVID-19 pandemic. Personal psychoneuroimmunity and organisational prevention measures can be implemented to lessen psychiatric symptoms. At the national level, involving mental health professionals to plan and coordinate psychological intervention for the country should be considered.


Subject(s)
Adult , Anxiety/etiology , COVID-19/psychology , Depression/etiology , Female , Health Surveys , Hospitals, Pediatric , Humans , Logistic Models , Male , Middle Aged , Multivariate Analysis , Occupational Diseases/etiology , Pandemics , Personnel, Hospital/psychology , Prevalence , Risk Factors , Self Report , Severity of Illness Index , Singapore/epidemiology , Stress, Psychological/etiology
8.
Article in English | WPRIM | ID: wpr-880356

ABSTRACT

BACKGROUND@#This study aimed to examine the change in health status of the general public after starting the COVID-19 pandemic and its association with changes in workload and lifestyle.@*METHODS@#A web-based survey was conducted in November 2020, about 9 months after starting the COVID-19 pandemic in Japan, among 8000 Japanese men and women aged 25-64 years. Participants asked for the changes after starting the COVID-19 pandemic in health status, workload, daily life, and health behavior. Ordinal logistic regression was performed to elucidate factors associated with deterioration in general health status.@*RESULTS@#A deterioration in general health status was reported by 17.0% of male and 19.4% of female. There has been a clear shift to sedentary life with decreasing moderate activity and increasing screen time. The multivariate analysis revealed that deteriorated work style, increased burden of housework, decreased moderate activity, increased digital media exposure, and increased body weight were significantly associated with deteriorating health status.@*CONCLUSION@#Both men and women have experienced significant changes in workload and lifestyle since the COVID-19 pandemic started. People should be aware of the risks associated with their recent life changes and take self-care measures to prevent serious health consequences.


Subject(s)
Adult , COVID-19/psychology , Female , Health Behavior , Health Status , Humans , Japan/epidemiology , Life Style , Male , Middle Aged , Multivariate Analysis , SARS-CoV-2 , Surveys and Questionnaires , Workload
9.
Article in English | WPRIM | ID: wpr-880349

ABSTRACT

BACKGROUND@#We aimed to estimate the prevalence of depressive symptoms as well as suicide-related ideation among Japanese university students during the stay-home order necessitated by the coronavirus disease 2019 pandemic in Japan, and offer evidence in support of future intervention to depression and suicide prevention strategies among college and university students.@*METHODS@#The data for this cross-sectional study were derived from the Student Mental Health Survey conducted from May 20 to June 16, 2020 at a national university in Akita prefecture. Among the 5111 students recruited, 2712 participated in this study (response rate, 53%; mean age ± standard deviation, 20.5 ±3.5 years; men, 53.8%). Depressive symptoms were identified by using the Patient Health Questionnaire-9 (PHQ-9).@*RESULTS@#The prevalence of moderate depressive symptoms based on a PHQ-9 score ≥10 and suicide-related ideation based on question 9 of PHQ-9 ≥1, which encompasses thoughts of both suicide and self-harm, was 11.7% and 6.7%, respectively. Multivariable logistic regression analyses showed that risk factors for depression included being a woman, smoking, alcohol consumption, and social network communication using either video or voice. For suicide-related ideation, alcohol consumption was the only risk factor. Exercise and having someone to consult about worries were associated with decreased risk of both depressive symptoms and suicide-related ideation.@*CONCLUSIONS@#Negative lifestyles of smoking and drinking, and being a woman, may be important risk factors for depressive symptoms, whereas exercise and having someone to consult about worries may be protective factors.


Subject(s)
Adolescent , Alcohol Drinking , COVID-19/psychology , Cross-Sectional Studies , Depression/epidemiology , Female , Humans , Japan/epidemiology , Logistic Models , Male , Multivariate Analysis , Pandemics , Risk Factors , Smoking , Students/psychology , Suicidal Ideation , Surveys and Questionnaires , Young Adult
10.
ABC., imagem cardiovasc ; 34(3)2021. tab, graf
Article in Portuguese | LILACS | ID: biblio-1292072

ABSTRACT

Fundamentos: O papel da cintilografia de perfusão miocárdica em pacientes assintomáticos permanece restrito a situações clínicas muito específicas, muitas delas abordadas nos Critérios de Uso Apropriado (AUC) de Cintilografia de Perfusão Miocárdica. Objetivo: Realizar uma análise crítica da aplicação desses critérios nas indicações de exames realizados em pacientes assintomáticos do Instituto Dante Pazzanese de Cardiologia, cuja população é notadamente de alto risco cardiovascular. Métodos: Foram selecionados pacientes assintomáticos que realizaram cintilografia de perfusão miocárdica para pesquisa de isquemia. As indicações dos exames foram classificadas em apropriadas, inapropriadas ou incertas. Hipocaptação fixa, hipocaptação transitória ou dilatação isquêmica transitória foram consideradas exames alterados. Na análise estatística, buscou-se avaliar a correlação entre o grau de recomendação das indicações e a presença de exames alterados. Resultados: A partir de uma seleção inicial de 2.999 prontuários, 490 foram considerados assintomáticos e incluídos conforme critérios de inclusão estabelecidos previamente. Apenas 9,8% das indicações foram inapropriadas, enquanto que 61,4% foram apropriadas, e 28,8% foram incertas. A hipocaptação fixa do radiofármaco ocorreu em 43,5% dos casos e a hipocaptação transitória, em 16,1%. Solicitar o exame de maneira apropriada ou incerta foi fator preditor de exame com resultado alterado nesta população. Conclusão: O uso dos critérios de uso apropriado da cintilografia de perfusão miocárdica mostrou-se eficaz em predizer exames alterados em uma população assintomática de alto risco cardiovascular, especialmente no grupo de pacientes com indicação incerta, o que pode significar que algumas das indicações consideradas incertas talvez sejam apropriadas para uma população de alto risco cardiovascular. (AU)


Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Middle Aged , Aged , Aged, 80 and over , Young Adult , Myocardial Ischemia/diagnostic imaging , Myocardial Perfusion Imaging/methods , Asymptomatic Diseases , Heart Disease Risk Factors , Fibrosis , Cross-Sectional Studies , Multivariate Analysis , Retrospective Studies , Myocardium/pathology
11.
Repert. med. cir ; 30(1): 43-47, 2021. tab.
Article in English, Spanish | LILACS, COLNAL | ID: biblio-1284478

ABSTRACT

Introducción: los cristaloides son medicamentos usados en pacientes críticamente enfermos, con resultados ambiguos cuando se utilizan soluciones balanceadas versus solución salina normal. Objetivo: conocer si existen diferencias al usar solución salina 0.9% vs. lactato de Ringer en pacientes críticamente enfermos con sepsis y choque séptico o hipovolémico, en cuanto a mortalidad, lesión renal aguda y tiempo de estancia hospitalaria. Métodos: estudio observacional de tipo cohorte retrospectiva en mayores de 18 años con diagnóstico de sepsis, choque séptico o hipovolémico. Se excluyeron aquellos con enfermedad renal crónica en diálisis, las hospitalizadas por ginecología/obstetricia y aquellos con diagnóstico de muerte encefálica o donantes de órganos. Se evaluaron los desenlaces primarios de mortalidad, lesión renal aguda y estancia hospitalaria. Resultados y discusión: se incluyeron 314 pacientes, 158 en el grupo expuesto a solución salina al 0.9% y 156 con lactato de Ringer. Se presentó lesión renal aguda en 22.7% con solución salina y 25.8% con lactato de Ringer (OR 1.18 IC 95%:0.7-2). La mortalidad con solución salina fue de 49%, y en lactato 49% (OR 1.01 IC 95%:0.63-1.63). Los factores de riesgo identificados para mortalidad fueron uso de soporte vasopresor (OR 35 IC 95% 12-83) y lesión renal aguda (1.3 IC 95% 1.01-1.69). Conclusiones: en el paciente críticamente enfermo con sepsis, choque séptico o hipovolémico el uso desolución salina 0.9% no representa diferencias al compararlo con lactato de Ringer en cuanto a mortalidad, lesión renal aguda o estancia hospitalaria. La elección de un cristaloide debe ser individualizada, teniendo en cuenta las comorbilidades, la presencia de hipercloremia o hiperpotasemia.


Objective: crystalloids are drugs used in critically ill patients, with ambiguous results when balanced solutions versus normal saline solution (NS) are used. The objective of this study is to determine if there are differences when NS (0.9%) vs. lactated Ringer ́s (LR) solution are given to critically ill patients in sepsis or septic or hypovolemic shock, in terms of mortality, acute renal injury and length of hospital stay. Methods: a retrospective observational cohort study in patients over 18 years old with sepsis or septic or hypovolemic shock. Patients with chronic renal disease on dialysis, those hospitalized by gynecology/obstetrics and those diagnosed with brain death or organ donors were excluded. The primary mortality outcomes, acute renal injury and hospital stay were evaluated. Results: 314 patients were included, 158 in the NS group and 156 in the LR group. Acute renal injury occurred in 22.7% in the NS group and 25.8% in the LR group (OR 1.18 IC 95%:0.7-2). Mortality rate was 49% in the NS group and 49% in the LR group (OR 1.01 95%: CI 0.63-1.63). Mortality risk factors included the use of vasopressor support (OR 35 95% CI 12-83) and acute renal injury (1.3 95% CI 1.01-1.69). Conclusions: no difference was found with the use of NS in critically ill patients with sepsis or septic or hypovolemic shock when compared with LR in terms of mortality, acute renal injury or hospital stay. The choice of which crystalloid to administer should be individualized, based on the comorbidities and the presence of hyperchloremia or hyperkalemia.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Aged, 80 and over , Shock/therapy , Sepsis/therapy , Ringer's Lactate/therapeutic use , Saline Solution/therapeutic use , Shock/mortality , Shock, Septic/mortality , Shock, Septic/therapy , Multivariate Analysis , Retrospective Studies , Treatment Outcome , Sepsis/mortality , Acute Kidney Injury/chemically induced , Ringer's Lactate/adverse effects , Saline Solution/adverse effects , Length of Stay
12.
Adv Rheumatol ; 61: 16, 2021. tab, graf
Article in English | LILACS | ID: biblio-1152746

ABSTRACT

Abstract Backgrounds: It is important to improve our understanding of the roles of calcium and vitamin D in bone health for preventing osteoporosis. We aimed at exploring the associations between serum calcium, vitamin D level, and bone mineral density (BMD) in adolescents included in the National Health and Nutrition Examination Survey (NHANES) 2001 - 2006. Methods: Weighted multivariate linear regression models were used to estimate the associations of serum calcium, 25(OH)D level with total BMD. Smooth curve fitting was used to explore the potential non-linear relationship. Results: A total of 5990 individuals aged between 12 and 19 years were included in this study. The fully-adjusted model showed serum calcium positively correlated with total BMD. However, an inverted U-shaped relationship was found when we performed the smooth curve fitting method, and the inflection point was calculated at 9.6 mg/dL using the two-piecewise linear regression model. In contrast, there was a positive correlation between serum 25(OH)D and total BMD after adjusting for potential confounders. Conclusions: The present study revealed a positive correlation between serum 25(OH)D level and total BMD, and an inverted U-shaped relationship between serum calcium and total BMD.(AU)


Subject(s)
Humans , Adolescent , Vitamin D/analysis , Bone Density , Calcium/analysis , Linear Models , Nutrition Surveys , Multivariate Analysis
13.
Bol. latinoam. Caribe plantas med. aromát ; 20(1): 61-70, 2021. tab, ilus
Article in English | LILACS | ID: biblio-1284444

ABSTRACT

Identification of the chemical compositionof essential oils is very important for ensuring the quality of finished herbal products. The objective of the study was to analyze the chemical components present in the essential oils of five Beilschmiediaspecies (i.e. B. kunstleri, B. maingayi, B. penangiana, B. madang, and B. glabra) by multivariate data analysis using principal component analysis (PCA) and hierarchical clustering analysis (HCA) methods. The essential oils were obtained by hydrodistillation and fully characterized by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). A total of 108 chemical components were successfully identified from the essential oils of five Beilschmiediaspecies. The essential oils were characterized by high proportions of ß-caryophyllene (B.kunstleri), δ-cadinene (B. penangianaand B. madang), and ß-eudesmol (B. maingayiand B. glabra). Principal component analysis (PCA) and hierarchical cluster analysis (HCA) revealed that chemical similarity was highest for all samples, except for B. madang. The multivariate data analysis may be used for the identification and characterization of essential oils from different Beilschmiediaspecies that are to be used as raw materials of traditional herbal products.


La identificación de la composición química de los aceites esenciales es muy importante para garantizar la calidad de los productos herbales terminados. El objetivo del estudio fue analizar los componentes químicos presentes en los aceites esenciales de cinco especies de Beilschmiedia (B. kunstleri, B. maingayi, B. penangiana, B. madangy B. glabra) mediante análisis de datos multivariados utilizando los métodos de análisis de componente principal (PCA) y análisis de agrupamiento jerárquico (HCA). Los aceites esenciales se obtuvieron por hidrodestilación y se caracterizaron completamente por cromatografía de gases (GC) y cromatografía de gases-espectrometría de masas (GC-MS). Se identificaron con éxito un total de 108 componentes químicos a partir de los aceites esenciales de las cinco especies de Beilschmiedia. Los aceites esenciales se caracterizaron por altas proporciones de ß-cariofileno (B. kunstleri), δ-cadineno (B. penangianay B. madang) y ß-eudesmol (B. maingayiy B. glabra). El análisis de componentes principales (PCA) y el análisis de conglomerados jerárquicos (HCA) revelaron que la similitud química fue más alta para todas las muestras, excepto para B. madang. El análisis de datos multivariados puede usarse para la identificación y caracterización de aceites esenciales de diferentes especies de Beilschmiedia que se utilizan como materias primas de productos herbales tradicionales.


Subject(s)
Oils, Volatile/chemistry , Lauraceae/chemistry , Sesquiterpenes/analysis , Cluster Analysis , Distillation , Multivariate Analysis , Chromatography, Gas/methods , Principal Component Analysis , Monoterpenes/analysis
14.
Estud. Psicol. (Campinas, Online) ; 38: e180157, 2021. tab, graf
Article in English | LILACS, INDEXPSI | ID: biblio-1133860

ABSTRACT

Tradeoff analysis, between generalizability, precision, and realism, guides methodological choices in organizational behavior. These methodological choices were systematically reviewed in Brazilian articles and books (1996-2017) to answer the following question: why are there no Brazilian studies on organizational behavior that use big data or analytics? Among 1062 research articles on organizational behavior, published in 19 psychology and business journals, 68% used scales, and only 10% used observation. Observation was often unstructured and supported other methods. The focus was on "saying," instead of "doing". Big data and analytics have the potential to simultaneously reach generalizability, precision, and realism and may pave the way for new conclusions. Additionally, these methods could transform research in organizational behavior.


A análise de custo-benefício entre generalidade, precisão e realismo guia escolhas metodológicas em comportamento organizacional. Estas foram sistematicamente revistas em artigos e livros (1996-2017) brasileiros com o objetivo de responder à pergunta: por que não há estudos em comportamento organizacional no Brasil que usem big data ou analytics? Dentre 1.062 artigos com relatos de pesquisa sobre comportamento organizacional publicados em 19 periódicos de Psicologia e Administração, 68% empregaram escalas e apenas 10% a observação. A observação foi muito frequentemente adotada de forma não estruturada e servindo de suporte a outros métodos. O foco foi no "falar" e não no "fazer". Big data e analytics têm o potencial para atingir ao mesmo tempo a generalidade, a precisão e o realismo e podem abrir o caminho para novas conclusões, sendo talvez capaz de transformar a investigação em comportamento organizacional.


Subject(s)
Multivariate Analysis , Methods , Measurement Equipment , Behavior Observation Techniques
15.
Ciênc. Saúde Colet ; 25(12): 4957-4967, Dec. 2020. tab, graf
Article in Portuguese | LILACS, ColecionaSUS, SES-SP | ID: biblio-1142714

ABSTRACT

Resumo Uma das preocupações ligadas à pandemia da COVID-19 se refere à capacidade da estrutura do sistema de saúde suportar a demanda por atendimento e tratamento de pessoas acometidas por esta doença. Diante disso, o objetivo deste estudo consiste em criar e mapear o Índice de Infraestrutura de Saúde (IIS) das Unidades da Federação (UFs) brasileiras, bem como verificar a sua distribuição espacial. Para isso, foi aplicada a metodologia de Análise Fatorial por Componentes Principais. Aplicou-se os testes de Bartlett e Kaiser-Meyer-Olkin para verificação da sua adequabilidade. Em seguida procedeu-se a Análise Exploratória de Dados Espaciais. Os dados foram coletados no DATASUS, COFEN, Ministério da Saúde, Portal de Compras do Governo e Portal da Transparência. Quanto aos resultados, o índice revelou que nove estados do Norte e Nordeste registraram os menores índices e cinco estados do Sudeste e Sul apresentaram os maiores índices. Foi registrado um cluster baixo-baixo nos estados do Amazonas e Pará e um Cluster alto-alto em Minas Gerais, Rio de Janeiro, São Paulo e Paraná.


Abstract One of the concerns linked to the COVID-19 pandemic is the capacity of health systems to respond to the demand for care for people with the disease. The objective of this study was to create a COVID-19 response Healthcare Infrastructure Index (HII), calculate the index for each state in Brazil, and determine its spatial distribution within and across regions. The HII was constructed using principal component factor analysis. The adequacy of the statistical model was tested using the Kaiser-Meyer-Olkin test and Bartlett's test of sphericity. The spatial distribution of the HII was analyzed using exploratory spatial data analysis. The data were obtained from DATASUS, the Federal Nursing Council, Ministry of Health, Government Procurement Portal, and the Transparency Portal. The nine states in the country's North and Northeast regions showed the lowest indices, while the five states from the Southeast and South regions showed the highest indices. Low-low clusters were observed in Amazonas and Pará and high-high clusters were found in Minas Gerais, Rio de Janeiro, São Paulo, and Paraná.


Subject(s)
Humans , Coronavirus Infections/therapy , Spatial Analysis , Betacoronavirus , Health Facilities/supply & distribution , Health Services Accessibility , Brazil/epidemiology , Multivariate Analysis , Factor Analysis, Statistical , Coronavirus Infections/epidemiology , Resource Allocation/supply & distribution , Pandemics , Health Workforce/statistics & numerical data
16.
Int. j. odontostomatol. (Print) ; 14(4): 564-571, dic. 2020. tab, graf
Article in English | LILACS | ID: biblio-1134539

ABSTRACT

ABSTRACT: The objective of this study was to evaluate the dental caries experience and its associated factors in homeless persons. A non-probabilistic sample of 176 participants (mean age 37.8 years) was included in this cross-sectional study. Interviews and clinical examinations were performed. Dental caries experience was recorded based on the decayed, missing and filled teeth-index (DMFT). The dental caries experience was observed among 98.9 % of participants (mean DMFT 11.0 ± 6.95). Individuals in the "Over 44 years" age groups (PR = 1.4; 95 % CI = 1.1-1.6) and "30 to 36 years" (PR = 1.2; 95 % CI = 1.0 -1.4) had significantly higher caries experience. Individuals who do not brush or brush only 1x/day have 40 % and 20 % higher caries experience, respectively. Homeless persons had a high experience of dental caries, with significant tooth loss. Individuals in the advanced age groups, lack of income and non-achievement or low frequency of tooth brushing are factors associated with a greater experience of the disease in these individuals.


RESUMEN: El objetivo de este estudio fue evaluar la experiencia de caries dental y sus factores asociados en personas sin hogar. En este estudio transversal se incluyó una muestra no probabilística de 176 participantes (edad media 37,8 años). Se realizaron entrevistas y exámenes clínicos. La experiencia de caries dental se registró en fun- ción del índice de dientes cariados, perdidos y obturados (DMFT). Se observó una experiencia positiva de caries dental entre el 98,9 % de los participantes (DMFT promedio 11,0 ± 6,95). Las personas en los grupos de edad "Ma- yores de 44 años" (PR = 1,4; IC del 95 % = 1,1-1,6) y "30 a 36 años" (PR = 1,2; IC del 95 % = 1,0 -1,4) tuvieron una experiencia de caries significativamente mayor. Las perso- nas que no se cepillan, o se cepillan solamente 1x / día tienen una tasa mayor de caries, de 40 % y 20 % más, respectivamente. En las personas en situación de calle se observó una alta tasa de caries dental, con una pérdida dentaria significativa. Los factores asociados a una mayor tasa de la enfermedad, fueron personas de edad avanzada, la falta de ingreso, no lograr el cepillado, o tener una menor frecuencia de cepillado.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Homeless Persons , Dental Caries , Socioeconomic Factors , Brazil/epidemiology , Cross-Sectional Studies , Multivariate Analysis , Habits
17.
Rev. medica electron ; 42(6): 2633-2643, nov.-dic. 2020. tab
Article in Spanish | LILACS, CUMED | ID: biblio-1150043

ABSTRACT

RESUMEN Introducción: la cirugía como ciencia médica tuvo grandes retos para llegar a tener una forma de tratamiento quirúrgico seguro y viable, entre estos uno de los mayores era como evitar los resultados adversos. Se realizó un análisis de los pacientes que reingresaron en el servicio de cirugía general por post operatorio complicado. Objetivo: determinar las causas de reingresos por postoperatorio complicado en el servicio de cirugía general. Material y métodos: se realizó un estudio prospectivo - descriptivo- observacional sobre el universo, que fueron todos los pacientes reingresados por postoperatorio complicados, por el servicio de Cirugía General. Se analizaron múltiples variables que pudieran estar en relación con los reingresos las cuales fueron obtenidas a través de una planilla de recolección de datos y procesadas por el programa computadorizado Microsoft Office 2009. Resultados: los pacientes que reingresaron, el mayor porcentaje son del sexo masculino, de la raza blanca y los mayores de 60 años. Los reingresos por complicaciones postquirúrgicas representan un bajo por ciento respecto al volumen de casos que son intervenidos y la principal causa de reingreso fue la infección del sitio quirúrgico, las variables analizadas las que más se relacionaron con los reingresos fueron las operaciones realizadas por vía convencional, atendidos en salas abiertas, con operaciones limpias contaminadas. Conclusiones: de los pacientes que reingresaron 6 de cada 10 son del sexo masculino de la raza blanca y su edad mayor de 60 años (AU).


SUMMARY Introduction: Surgery, as a medical science, faced big challenges to become a form of a safe, feasible surgical treatment; among them, one of the biggest was avoiding adverse outcomes. The authors carried out an analysis of the patients readmitted in the service of General Surgery of the University Hospital "Faustino Perez Hernandez" of Matanzas due to complicated post-surgery evolution in the period from January 2016 to December 2018. Objective: to determine the causes of readmissions due to complicated post-surgery evolution in the service of General Surgery of the University "Hospital Faustino Perez Hernandez". Materials and methods: a prospective, descriptive, observational study was carried out on a universe of all patients readmitted in the service of General Surgery due to complicated post-surgery evolution. The authors analyzed several variables that could be related to readmissions and were obtained from a data collection form and processed with the computer program Microsoft Office 2009. Results: the main results were that among readmitted patients, the highest percent were male, white and elder than 60 years old. Readmissions due to post-surgery complications represent a low percent with respect to the quantity of patients who underwent surgery, and the main cause of readmission was infection at the surgery site. From the analyzed variables the once related the most with readmissions were conventional surgeries, patients looked after in open wards, with contaminated clean operations. Conclusions: six from each ten patients were male, white, and aged more than 60 years (AU).


Subject(s)
Humans , Male , Female , Patient Readmission , Postoperative Complications/classification , Postoperative Period , Surgery Department, Hospital , Causality , Multivariate Analysis
18.
Rev. Bras. Saúde Mater. Infant. (Online) ; 20(4): 985-995, Oct-Dec. 2020. tab
Article in English | LILACS | ID: biblio-1155289

ABSTRACT

Abstract Objectives: to analyze the association of socioeconomic, obstetric, pediatric and prophylactic factors to the vertical transmission of HIV in children followed at a reference service in Recife between 2010 and 2015. Methods: case-control nested the cohort of children exposed to vertical transmission of HIV. A univariate and multivariate statistical analysis was performed on the association of socioeconomic, obstetric, pediatric and prophylactic measures with the outcome. We considered two multivariate approaches, conventional and hierarchical, the latter made it possible to consider different levels of determination. Results: 46.5% of the mothers had low schooling, 69.6% without work-related wages and 35.7% received a family grant. Women with postpartum diagnosis and less than 6 prenatal appointments had a greater chance of vertical transmission. Prophylactic measures were statistically associated with prevention of transmission (p<0.1%). Conclusions: vertical risk factors for HIV transmission were identified: no sewage system, at least six prenatal consultations, first care of the child with more than two months and no prophylaxis in pregnancy and childbirth. Determining factors for which specific policies and programs exist and their non-access social determination evidence of HIV vertical transmission.


Resumo Objetivos: analisar a associação dos fatores socioeconómicos, obstétricos, pediátricos e medidas profiláticas à transmissão vertical do HIV em crianças acompanhadas em um serviço de referência no Recife, entre 2010 e 2015. Métodos: caso-controle aninhado a coorte de crianças expostas à transmissão vertical do HIV. Realizou-se análise estatística uni e multivariada da associação das características socioeconômicas, obstétricas, pediátricas e das medidas profiláticas com o desfecho. Considerou-se duas abordagens multivariadas, convencional e hierarquizada, esta última possibilita considerar diferentes níveis de determinação. Resultados: observou-se 46,5% de mães com baixa escolaridade, 69,6% sem remuneração advinda do trabalho e 35,7% recebendo bolsa família. Mulheres com diagnóstico pós-parto e menos de 6 consultas de pré-natal apresentaram maior chance de transmissão vertical. As medidas profiláticas estiveram estatisticamente associadas à prevenção da transmissão (p<0,1%). Conclusões: identificaram-se como fatores de risco para a transmissão vertical do HIV: não possuir rede coletora de esgoto, não ter realizado no mínimo seis consultas de pré-natal, primeiro atendimento da criança com mais de dois meses e não ter realizado as profilaxias na gestação e no parto. Fatores determinantes para os quais existem políticas e programas específicos e o seu não acesso evidencia a determinação social da transmissão vertical do HIV.


Subject(s)
Humans , Child , Socioeconomic Factors , Risk Factors , HIV , Infectious Disease Transmission, Vertical/prevention & control , Infectious Disease Transmission, Vertical/statistics & numerical data , Brazil/epidemiology , Case-Control Studies , Multivariate Analysis , Observational Study
19.
ABC., imagem cardiovasc ; 33(4): eabc97, 20200000.
Article in Portuguese | LILACS | ID: biblio-1146296

ABSTRACT

Fundamento: O infarto do miocárdio é uma das principais causas de morbimortalidade no mundo, e 13,2% dos pacientes com síndrome coronariana aguda apresentam coronárias sem obstrução significativa, denominada MINOCA (do inglês Myocardial Infarction with Non-Obstructive Coronary Artery, Infarto do Miocárdio sem Doença Coronariana Obstrutiva). Apesar do MINOCA ter evolução mais favorável que o infarto do miocárdio por obstrução coronariana, seu prognóstico não é benigno. A ressonância magnética cardíaca é o exame que apresenta importância no diagnóstico das diversas causas de MINOCA, e seu valor prognóstico não está completamente elucidado. Objetivo: Avaliar o valor prognóstico da ressonância magnética cardíaca na detecção de eventos adversos maiores em pacientes com MINOCA. Métodos: Coorte prospectiva por meio de coleta de dados de pacientes admitidos na urgência de pacientes com hospital terciário, diagnosticados com MINOCA, no período de 2012 a 2019. Resultados: Foram avaliados 179 pacientes com seguimento médio de 45 ± 21 meses, sendo 52% do sexo masculino, com idade média de 57,3 ± 15,5 anos. Observou-se incidência de eventos adversos maiores de 17,9%. A taxa de mortalidade ao final do acompanhamento foi de 3,8%. Na análise multivariada, apenas a ressonância magnética cardíaca com resultado normal se mostrou como preditor independente de bom prognóstico (hazard ratio: 0,09; intervalo de confiança de 95% 0,01- 0,88; p = 0,04), com curva de Kaplan-Meier apresentando diferença significativa (log-rank x2 = 9,83; p = 0,02) na predição de eventos adversos maiores. Conclusão: A ressonância magnética cardíaca normal mostrou-se como variável independente de bom prognóstico nessa população, podendo ser útil na estratificação de risco de pacientes com MINOCA.


Background: Myocardial infarction is one of the major causes of morbidity and mortality worldwide and 13.2% of patients with acute coronary syndrome have normal or unobstructed coronary arteries, called MINOCA (Myocardial Infarction with Non-Obstructive Coronary Artery). Cardiac magnetic resonance (CMR) is the gold standard for investigating the etiology of acute coronary syndrome. Although MINOCA has a more benign evolution than myocardial infarction due to coronary obstruction, its prognostic factors are not completely elucidated. Objective: To evaluate prognosis, predictive factors and describe the incidence of major adverse cardiovascular events in patients with MINOCA. Methods: Prospective cohort through data collection of patients admitted to the emergency department of a tertiary hospital, diagnosed with MINOCA from 2012 to 2019. The mean follow-up was 45 months, the outcomes considered were: death, rehospitalization due to cardiac causes, recurrence of chest pain, myocardial revascularization (MACE).


Subject(s)
Humans , Male , Female , Adolescent , Adult , Middle Aged , Acute Coronary Syndrome/diagnostic imaging , Hypertension/complications , Myocardial Infarction/diagnostic imaging , Magnetic Resonance Imaging/methods , Multivariate Analysis , Cohort Studies , Outcome Assessment, Health Care
20.
Biosci. j. (Online) ; 36(6): 2050-2059, 01-11-2020. tab, graf
Article in English | LILACS | ID: biblio-1148058

ABSTRACT

The physiological quality of seeds is influenced by the climatic factors of production fields. The identification of the best conditions of P. maximum cv. Mombasa production fields allows the improvement of the seed sector. The aim of this work was to identify which climatic conditions of production fields can affect the physiological quality of P. maximum cv. Mombasa seeds. Nineteen plots from states of São Paulo (six from municipalities of Auriflama and three from Guzolândia) and Goiás (eight from Quirinópolis and two from Serranópolis), were collected by soil sweeping. The following parameters were evaluated: water content, germination rate, first germination count and germination rate index, seedling emergence in sand and field. Completely randomized design was used for all variables, with the exception of seedling emergence in field, since this variable required block design. Means were compared by the Scott-Knott test, at 5% probability. For the identification of the influence of climatic conditions on the physiological quality of seeds, multivariate statistical analysis was applied through Group and Principal Component Analysis. Production fields of Panicum maximum cv. Mombasa seeds presenting maximum temperatures above 32 ºC at flowering and natural fall stages produce seeds of low physiological quality. Production fields in which precipitation and high temperatures occur during natural fall and harvest of P. maximum cv. Mombasa seeds are not favorable to the production of seeds with high physiological quality.


A qualidade fisiológica das sementes é influenciada pelos fatores climáticas doscampos de produção. A identificação das condições dos melhores campos de produção de P. maximum cv. Mombaça permite aprimoramento do setor de sementes. O objetivo desse trabalho foi identificar quais condições climáticas dos campos de produção podem afetar a qualidade fisiológica das sementes de P. maximum cv. Mombaça. Foram avaliados dezenove lotes procedentes do estado de São Paulo (seis de Auriflama e três de Guzolândia) e Goiás (oito de Quirinópolis e dois de Serranópolis), colhidos por varredura do solo. Foram avaliados por meio dos seguintes parâmetros: teor de água, germinação, primeira contagem de germinação e índice de velocidade de germinação, emergência de plântulas em areia e em campo. Adotou-se delineamento inteiramente casualizado para todas as variáveis, com exceção da emergência de plântulas em campo, pois neste adotou-se delineamento em blocos. As médias foram comparadas pelo teste Scott-Knott, a 5% de probabilidade. Para a identificação da influência das condições climáticas na qualidade fisiológica das sementes aplicou-se análise estatística multivariada por meio de Análise de Agrupamento e Componentes Principais. Campos de produção de sementes de Panicum maximum cv. Mombaça que apresentam temperaturas máximas superiores a 32 ºC nas épocasde florescimento e degrana produzem sementes de baixa qualidade fisiológica. Campos de produção em que ocorram precipitações e altas temperaturas durante a degrana e à colheita de sementes de P.maximum cv. Mombaça não são favoráveis a produção de sementes com alta qualidade fisiológica.


Subject(s)
Seeds , Multivariate Analysis , Brachiaria , Panicum
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