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1.
Artigo em Inglês | MEDLINE | ID: mdl-38791760

RESUMO

The relationship between anxiety symptoms and perceived quality of life among caregivers of children with autism was verified. To assess perceived quality of life, the Short Form Healthy Survey Item was used; perception of anxiety symptoms was assessed using the Beck Anxiety Inventory. Eighty caregivers of children with autism participated, with 68.7% of caregivers being mothers. Of the total number of caregivers, 68.8% had a severe level of anxiety. Regarding perceived quality of life, they demonstrated greater impairment in limitation due to physical aspects, limitation due to emotional aspects, vitality, and pain. Caregivers with severe anxiety levels had a worse quality of life in the domains of pain (p = 0.012), social aspects (p < 0.001), limitation due to emotional aspects (p = 0.001), and mental health (p < 0.001). However, in the functional capacity domain, caregivers with a moderate level of anxiety had a better physical capacity score (p = 0.001). There was a negative correlation between the general anxiety score and the general physical (p = 0.029) and general emotional components of perceived quality of life (p < 0.001). It was found that caregivers of children with ASD have a high level of anxiety, which is a predictor of the perception of a worse quality of life.


Assuntos
Ansiedade , Transtorno do Espectro Autista , Cuidadores , Qualidade de Vida , Humanos , Cuidadores/psicologia , Feminino , Transtorno do Espectro Autista/psicologia , Masculino , Ansiedade/psicologia , Adulto , Criança , Pessoa de Meia-Idade , Brasil , Adolescente , Pré-Escolar , Adulto Jovem , Inquéritos e Questionários
2.
Nutrients ; 15(9)2023 Apr 28.
Artigo em Inglês | MEDLINE | ID: mdl-37432251

RESUMO

Until this moment, no research has been found that has assessed adherence to online nutritional monitoring by adults with Diabetes Mellitus Type 1 (T1DM) during the pandemic. This article aims to analyze the association between eating habits and adherence to nutritional online care by adults with T1DM during social distancing because of the COVID-19 pandemic in Brazil. A cross-sectional study was carried out in July 2020. An online form was used to collect sociodemographic data, financial status, eating habits, carrying out online nutritional monitoring, and adherence to social distancing. Pearson's chi-squared test was performed with adjusted residual analysis and binomial logistic regression analysis (p < 0.05). Out of the 472 adults, only 8.9% had consulted with a nutritionist. Doing nutritional monitoring online during social distancing was associated with a reduction in the consumption of ultra-processed foods (p = 0.021), eating more servings of fruit (p = 0.036), and doing carbohydrate counting (CC) more frequently (p = 0.000). Doing nutritional monitoring online increased adherence to carbohydrate counting by 2.57 times and increased the consumption of fruits by 0.423 times. Therefore, nutritional monitoring, even if performed remotely, can influence the acquisition and maintenance of healthier eating habits, in addition to assisting adherence to the practice of CC.


Assuntos
COVID-19 , Diabetes Mellitus Tipo 1 , Adulto , Humanos , COVID-19/epidemiologia , Brasil/epidemiologia , Pandemias , Estudos Transversais , Carboidratos
3.
Foods ; 12(12)2023 Jun 13.
Artigo em Inglês | MEDLINE | ID: mdl-37372569

RESUMO

Knowing the determinants of food choices allows the nutritionist to develop more assertive guidelines considering biopsychosocial factors to produce effective changes in eating practices. This cross-sectional, descriptive, and analytical study aimed to test the correlation between the determinants of food choices and the socioeconomic and demographic factors of individuals with hepatitis B and C. Patients with hepatitis B and/or C aged between 20 and 74 years were evaluated from August 2020 to August 2021. Their socioeconomic and demographic data and clinical data were collected, and The Eating Motivation Survey (TEMS) was applied. A total of 145 individuals were evaluated, with a mean age of 53.54 ± 12.14 years. There were positive weak correlations between gender (p2 = 0.193; p = 0.020) and age (p2 = 0.177; p = 0.033) with the scale "preference"; negative correlations between age and the scales "price" (p2 = -0.204; p = 0.014) and "emotion control" (p2 = -0.168; p = 0.044); negative correlations between education and the scales "convenience" (p2 = -0.172; p = 0.039) and "social norms" (p2 = -0.206; p = 0.013); and income showed a negative correlation with "price" (p2 = -0.208; p = 0.012) and a positive correlation with "weight control" (p2 = 0.186; p = 0.025). These findings contribute to the development of more realistic and feasible eating strategies that favor food autonomy.

4.
Front Public Health ; 11: 1227214, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38174082

RESUMO

Blackground: To assess grazing behavior and associated factors in candidates for bariatric surgery monitored at a public hospital that is a reference in the care of people with severe obesity. Methods: Cross-sectional analytical study, with candidates for bariatric surgery of both genders, treated in a public hospital in the Amazon. To assess grazing behavior, the Repetitive Eating Questionnaire was used, and to investigate patterns of eating behavior, the Three Factor Eating Questionnaire was used, which assesses: Emotional Eating, Cognitive Restriction and Uncontrolled Eating. Sociodemographic information was obtained through self-report and the description of medication use through the medical record. Body mass index (BMI) was also calculated by measuring weight and height. The SPSS program, v. 21.0 was used. The study was approved by the Research Ethics Committee. Results: A total of 205 participants were evaluated, with a mean age of 37.5 ± 8.6 years, the majority (93.7%) being women and the majority (59.5%) was not also using medication to lose weight. About 66.3% of the participants had compulsive grazing. The factor with the highest score was cognitive restriction (p < 0.001). Individuals who used weight loss drugs had higher scores in the cognitive restriction factor (p = 0.015) and lower scores for uncontrolled eating (p = 0.008), compulsive grazing (p = 0.021) and non-compulsive grazing (p = 0.034). Conclusion: Linear regression showed that emotional eating and uncontrolled eating were predictors of both compulsive grazing and non-compulsive grazing behavior. It was observed that grazing behavior, cognitive restriction, emotional eating and uncontrolled eating are present and correlated in the studied patients. In addition, the use of weight loss drugs seems to help reduce dysfunctional eating behaviors in patients with severe obesity.


Assuntos
Fármacos Antiobesidade , Cirurgia Bariátrica , Obesidade Mórbida , Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Obesidade Mórbida/cirurgia , Obesidade Mórbida/psicologia , Estudos Transversais , Cirurgia Bariátrica/psicologia , Obesidade , Hospitais
5.
Demetra (Rio J.) ; 18: 70073, 2023. ^etab
Artigo em Inglês, Português | LILACS | ID: biblio-1442899

RESUMO

Introdução: A melhora nos sintomas de ansiedade após a cirurgia bariátrica pode não permanecer estável em longo prazo, favorecendo a adoção de comportamentos alimentares disfuncionais. Objetivo: Testar a correlação entre o nível de ansiedade e a recorrência de peso em mulheres no pós-operatório tardio de cirurgia bariátrica e metabólica. Métodos: Foram avaliadas 50 mulheres adultas com no mínimo 24 meses após a cirurgia bariátrica e metabólica. Foram coletados dados sociodemográficos (idade, renda e nível de escolaridade) e de acompanhamento psicológico. Foram aferidos dados antropométricos (peso e altura). Para avaliar o nível de sintomas de ansiedade, foi utilizado o Inventário de Beck. Resultados: Foi encontrada média de idade de 40,9±11,4 anos. Todas apresentavam sintomas de ansiedade moderados a graves. Aquelas que estavam sem acompanhamento psicológico apresentavam maior peso corporal (p=0,049) e maior recorrência de peso (p=0,040). Observou-se correlação positiva entre o escore de ansiedade e a recorrência de peso, e correlação negativa entre o escore de ansiedade e a renda familiar. No modelo de regressão linear, a correlação entre o escore de ansiedade com a recorrência de peso (B=0,276; IC 0,003;0,594; p=0,048) e a renda (B=-0,310; IC -0,004;0,000; p=0,027) permaneceu significativa. Contudo, ao adicionar a variável "tempo de cirurgia", observou-se perda de significância entre ansiedade e recorrência de peso (B=0,270; IC -0,040; -0,624; p=0,083), mas manteve-se a correlação com a renda (B=-0,310; IC -0,004;-0,000; p=0,029). Conclusões: Ressalta-se a importância de suporte financeiro no pós-operatório, pelos custos com o tratamento, além de manter o acompanhamento com a equipe multiprofissional em longo prazo.


Introduction: The improvement in anxiety symptoms after bariatric surgery may not remain stable in the long term, favoring the adoption of dysfunctional eating behaviors. Objective: To test the correlation between anxiety level and weight recurrence in women in the late postoperative period of bariatric and metabolic surgery. Methods: Fifty adult women with at least 24 months after bariatric and metabolic surgery were evaluated. Sociodemographic data (age, income and level of education) and psychological monitoring were collected. Anthropometric data (weight and height) were measured. To assess the level of anxiety symptoms, the Beck Anxiety Inventory was used. Results: A mean age of 40.9±11.4 years was found. All had moderate to severe anxiety symptoms. Those who were without psychological support had higher body weight (p=0.049) and greater recurrence of weight (p=0.040). There was a positive correlation between the anxiety score and body weight recurrence, and a negative correlation between the anxiety score and family income. In the linear regression model, the correlation between anxiety score and weight recurrence (B=0.276; CI 0.003; 0.594; p=0.048) and income (B=-0.310; CI -0.004; 0.000; p=0.027) remained significant. However, when adding the variable "surgery time", there was a loss of significance between anxiety and weight recurrence (B=0.270; CI -0.040; -0.624; p=0.083), but the correlation with income was maintained (B=-0.310; CI -0.004; -0.000; p=0.029). Conclusions: We emphasize the importance of financial support in the postoperative period, due to treatment costs, in addition to maintaining monitoring with the multidisciplinary team in the long term.


Assuntos
Humanos , Feminino , Adulto , Pessoa de Meia-Idade , Ansiedade , Peso Corporal , Cirurgia Bariátrica , Estudos Transversais
6.
Artigo em Inglês | MEDLINE | ID: mdl-36011412

RESUMO

To control glycemic variability in people with Type 1 diabetes mellitus (T1DM), it is essential to perform carbohydrate counting (CC), a strategy that ensures better quality of life for these patients. Thus, this study aims to analyze potential factors associated with adherence to CC in adults with T1DM during social distancing due to COVID-19 in Brazil. This was a single cross-sectional study carried out in July 2020. An online form was used to collect sociodemographic and economic data on the purchasing of supplies and food, as well as social distancing. The Chi-square test was performed with adjusted residuals analysis and a binomial logistic regression analysis (p < 0.05). Of 472 adults, 37.71% reported performing CC in the same frequency as before social distancing. There was an association between performance of CC and the type of city (p = 0.027), family income (p = 0.000), use of financial emergency aid (p = 0.045), type of insulin administration and glycemic monitoring (p < 0.000), and cooking more (p = 0.012). Participants who maintained or reduced consumption of ultra-processed foods were 0.62 times more likely to adhere to CC (OR 0.626, 95% IC: 0.419−0.935) and participants who cooked more were 1.67 times more likely to adhere to CC (OR 1.67, 95% CI: 1.146−2.447). There are still people with T1DM who did not know about and did not use CC method, which highlights the need for diabetes education.


Assuntos
COVID-19 , Diabetes Mellitus Tipo 1 , Adulto , Glicemia , COVID-19/epidemiologia , Estudos Transversais , Diabetes Mellitus Tipo 1/epidemiologia , Dieta , Humanos , Distanciamento Físico , Qualidade de Vida
7.
Artigo em Inglês | MEDLINE | ID: mdl-35805307

RESUMO

Individuals undergoing bariatric Surgery (BS) may have long-term weight regain. There is a need to investigate factors that may be related to this and if they can interfere with Quality of Life (QOL). This study aims to evaluate the relationship between eating behavior, perception of QOL, and weight regain in women after 24 months of bariatric surgery. This was a transversal study with 50 adult women residents in the city of Belém, Brazil. Sociodemographic, anthropometric, eating behavior (Three-Factor Eating Questionnaire­TFEQ-21) and perception of QOL (Item Short Form Healthy Survey­SF-36) data were collected. In 60% (n = 30) there was weight regain (≥15%), with a mean weight regain of 23.3% (±18.4). Emotional eating was the most frequent pattern (p = 0.047). Regarding QOL, the functional capacity and limitation due to physical aspects domains had a better perception (p < 0.0001). Women without weight regain showed a better perception of the functional capacity aspects (p = 0.007), limitation due to physical aspects (p = 0.044), social aspects (p = 0.048), and general physical components (p = 0.016) and also had an inverse association with the perception of QOL in physical components (p = 0.008). Patterns of eating behavior and weight regain can damage the perception of QOL, especially physical capacity. Long-term follow-up is essential to evaluate the behavior of people who have undergone BS in order to prevent weight regain and QOL damage.


Assuntos
Cirurgia Bariátrica , Obesidade Mórbida , Adulto , Comportamento Alimentar/psicologia , Feminino , Humanos , Obesidade Mórbida/cirurgia , Qualidade de Vida/psicologia , Inquéritos e Questionários , Aumento de Peso
8.
Artigo em Inglês | MEDLINE | ID: mdl-35742300

RESUMO

Purpose: To analyze the correlation between anxiety symptoms and perceived quality of life in women more than 24 months after undergoing bariatric surgery. Methods: Cross-sectional, descriptive and analytical study, carried out with women who underwent bariatric surgery after at least 24 months. To assess the level of anxiety symptoms, the Beck Inventory was used and to assess the perception of quality of life, the Item Short Form Healthy Survey was applied. Results: Of the 50 participants, 36.0% had reports indicative of moderate symptoms and 64.0% had severe symptoms of anxiety. The domains of quality of life that correlated with better perception were pain (p < 0.001), functional capacity (p = 0.013), general health status (p = 0.018), social aspects (p < 0.001), and mental health (p < 0.001). In linear regression, a significant inverse correlation was found between the general emotional component of quality of life and anxiety score (ß = −0.546; CI −1.419; −0.559; p < 0.001) and between the general physical component of quality of life and anxiety score (ß = −0.339; CI −0.899; −0.131; p = 0.010), both independent of weight regain and surgery time. Conclusions: It was observed that moderate to severe anxiety symptoms seem to interfere with the perception of quality of life, regardless of weight regain and surgery time.


Assuntos
Cirurgia Bariátrica , Qualidade de Vida , Ansiedade/epidemiologia , Cirurgia Bariátrica/psicologia , Estudos Transversais , Depressão/psicologia , Feminino , Humanos , Percepção , Qualidade de Vida/psicologia , Aumento de Peso
9.
Mundo saúde (Impr.) ; 46: e11092021, 2022.
Artigo em Inglês, Português | LILACS-Express | LILACS | ID: biblio-1437433

RESUMO

O estudo analisou fatores socioeconômicos associados à aquisição de insumos para manejo da glicemia por pessoas com Diabetes Mellitus tipo 1 durante o distanciamento social pela Pandemia de COVID-19 no Brasil. Pesquisa transversal com coleta de dados realizada durante 21 dias do mês de julho de 2020, com um formulário online sobre dados socioeconômicos e aquisição de insumos para monitorização glicêmica. Foi aplicado o teste Qui-Quadrado de Pearson com análise de resíduos ajustados (p<0,05). Participaram 472 adultos de ambos os sexos. Foram encontradas associações entre o tipo de aparelho utilizado para monitorização glicêmica (glicosímetro ou sistema Flash) e renda (p<0,000), escolaridade (p=0,007), macrorregiões (p=0,049) e tipo de cidade (p=0,043); entre aquisição de insulinas e renda (p<0,000), macrorregião (p=0,027) e tipo de bairro (p=0,003); entre aquisição de fitas reagentes e renda (p<0,000); entre aquisição de lancetas e renda (p=0,001), tipo de cidade (p=0,035) e de bairro (p=0,010); entre o uso de Sistema Flash e renda (p<0,000) e tipo de bairro (p=0,006). Os resultados expõem as desigualdades sociais na aquisição de insumos para manejo da glicemia por pessoas com Diabetes Tipo 1 durante a Pandemia no Brasil.


This study analyzed socioeconomic factors related with the acquisition of supplies for blood glucose management by people with Type 1 Diabetes Mellitus during social distancing due to the COVID-19 Pandemic in Brazil. This was a cross-sectional study with data collected during 21 days in July 2020, by an online form on socioeconomic data and acquisition of supplies for glycemic monitoring. This research applied Pearson's Chi-Squared test with adjusted residual analysis (p<0.05). 472 adults of both sexes participated. Relationships were found between the type of device used for blood glucose monitoring (glucometer or Flash system) and income (p<0.000), education (p=0.007), macro-regions (p=0.049), and type of city (p=0.043); between insulin acquisition and income (p<0.000), macro-region (p=0.027) and type of neighborhood (p=0.003); between acquisition of reagent strips and income (p<0.000); between acquisition of lancets and income (p=0.001), type of city (p=0.035) and neighborhood (p=0.010); between the use of Flash System and income (p<0.000) and type of neighborhood (p=0.006). The results expose the social inequalities in the acquisition of supplies for blood glucose management by people with Type 1 Diabetes during the Pandemic in Brazil.

10.
Rev Assoc Med Bras (1992) ; 67(12): 1821-1824, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34909956

RESUMO

OBJECTIVE: To review data regarding the effects of hepatitis C virus eradication on glycemic control and insulin resistance. METHODS: This is an integrative literature review, carried out in the PubMed, SciELO, and Lilacs databases. Studies published in the past five years that were fully available, written in English or Portuguese, and have addressed the effects of eradication of the hepatitis C virus on glycemic control and insulin resistance were selected. RESULTS: Nine studies were selected. Among the results found, it was observed that there is no consensus on the effects of viral eradication on glycemic control and IR, as some authors show an eventual improvement in insulin resistance and glycemic control, while other studies indicate that there are no significant differences between the parameters evaluated after viral eradication. CONCLUSIONS: Although there is a relationship between hepatitis C virus infection and the development of insulin resistance and type 2 diabetes mellitus and recent advances in research, it was observed that there is no consensus on improving insulin resistance and glycemic control after antiviral treatment, probably due to methodological differences between studies. However, it emphasizes the need to guide people diagnosed with hepatitis C, regarding changes in lifestyle, encouragement of multidisciplinary monitoring, and control of other risk factors.


Assuntos
Diabetes Mellitus Tipo 2 , Hepatite C , Resistência à Insulina , Glicemia , Diabetes Mellitus Tipo 2/tratamento farmacológico , Controle Glicêmico , Hepacivirus , Hepatite C/tratamento farmacológico , Humanos , Insulina
11.
Rev. Nutr. (Online) ; 34: e210043, 2021. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1351566

RESUMO

ABSTRACT Objective To verify the association between cooking habits, socioeconomic data, and food choices of individuals with Type 1 Diabetes Mellitus during the pandemic of COVID-19. Methods Transversal study with individuals with Type 1 Diabetes Mellitus carried out in July 2020. Socioeconomic data and information about social distancing and food practices were collected with an online form. The research was approved by the university's Ethics and Research Committee (Process number 4.147.663). Results Out of the 472 participants, 50.9% reported that they have been cooking more during the pandemic. An association between cooking more and having a university degree (p<0.000) was observed. Not being able to comply with social distancing rules because of work necessities was associated with not cooking (p=0.006). Cooking more during the quarantine was associated with eating less than five meals per day (p=0.04), having an appropriate consumption of fruits (p=0.02) and vegetables (p=0.04), and increased water intake (p=0.01). Conclusion In Brazil, the habit of cooking during the pandemic may represent an increase in domestic work, reinforced by social inequalities. Therefore, comprehending the cooking habits and food choices of people with diabetes may widen the perspectives of health professionals involved in the treatment of the disease and contribute to the elaboration of public policies that take the country's inequalities into account. We emphasize the importance of investing in policies that encourage the development of culinary skills, as well as the habit of cooking as part of the actions of Food and Nutrition Education.


RESUMO Objetivo Verificar associação entre o hábito de cozinhar, dados socioeconômicos e escolhas alimentares de indivíduos com Diabetes Mellitus tipo 1 durante a pandemia de COVID-19. Método Estudo transversal realizado com indivíduos com Diabetes Mellitus tipo 1 durante julho de 2020. A partir de um formulário on-line foram coletados dados socioeconômicos, demográficos, informações sobre o distanciamento social e práticas alimentares durante a quarentena. A pesquisa foi aprovada pelo Comitê de Ética em Pesquisa (parecer 4.147.663). Resultados Dos 472 participantes, 50,9% relataram estar cozinhando mais durante a quarentena. Observou-se uma associação entre cozinhar mais e ter ensino superior (p<0,000). Não estar realizando distanciamento social porque precisava trabalhar esteve associado a não cozinhar (p=0,006). Quanto à alimentação, cozinhar mais durante a quarentena estava associado a consumir menos de cinco refeições ao dia (p=0,04), ter consumo adequado de frutas (p=0,02) e hortaliças (p=0,04) e ter aumentado a ingestão de água (p=0,01). Conclusão No Brasil, o hábito de cozinhar durante a pandemia pode representar um aumento do trabalho doméstico, ocasionado pelas desigualdades sociais. Portanto, compreender esse hábito e as escolhas alimentares de pessoas com diabetes, pode ampliar a visão dos profissionais de saúde envolvidos no tratamento e contribuir com a elaboração de políticas públicas que levem em consideração as desigualdades do país. Ressaltamos a importância do investimento em políticas que estimulem o desenvolvimento das habilidades culinárias, bem como do hábito de cozinhar no âmbito das ações de Educação Alimentar e Nutricional.


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Idoso , Isolamento Social , Culinária , Diabetes Mellitus , Diabetes Mellitus Tipo 1 , Dieta , Comportamento Alimentar , COVID-19
12.
Arq. bras. cardiol ; 112(6): 721-726, Jun. 2019. tab, graf
Artigo em Inglês, Português | LILACS | ID: biblio-1011214

RESUMO

Abstract Background: Behavioral scientists consistently point out that knowledge does not influence decisions as expected. GRACE Score is a well validated risk model for predicting death of patients with acute coronary syndromes (ACS). However, whether prognostic assessment by this Score modulates medical decision is not known. Objective: To test the hypothesis that the use of a validated risk score rationalizes the choice of invasive strategies for higher risk patients with non-ST-elevation ACS. Methods: ACS patients were consecutively included in this prospective registry. GRACE Score was routinely used by cardiologists as the prognostic risk model. An invasive strategy was defined as an immediate decision of the coronary angiography, which in the selective strategy was only indicated in case of positive non-invasive test or unstable course. Firstly, we evaluated the association between GRACE and invasiviness; secondly, in order to find out the actual determinants of the invasive strategy, we built a propensity model for invasive decision. For this analysis, a p-value < 0.05 was considered as significant. Results: In a sample of 570 patients, an invasive strategy was adopted for 394 (69%). GRACE Score was 118 ± 38 for the invasive group, similar to 116 ± 38 for the selective group (p = 0.64). A propensity score for the invasive strategy was derived from logistic regression: positive troponin and ST-deviation (positive associations) and hemoglobin (negative association). This score predicted an invasive strategy with c-statistics of 0.68 (95%CI: 0.63-0.73), opposed to GRACE Score (AUC 0.51; 95%CI: 0.47-0.57). Conclusion: The dissociation between GRACE Score and invasive decision in ACS suggests that the knowledge of prognostic probabilities might not determine medical decision.


Resumo Fundamento: Cientistas behavioristas ressaltam consistentemente que conhecimento não influencia decisão como esperado. O escore GRACE é um modelo de risco bem validado para prever morte de pacientes com síndromes coronarianas agudas (SCA). Todavia, não se sabe se a avaliação prognóstica pelo GRACE modula decisão médica. Objetivo: Testar a hipótese de que a utilização de escore de risco validado racionaliza a escolha de estratégias invasivas para pacientes de alto risco com SCA sem supradesnivelamento do segmento ST. Métodos: Pacientes com SCA foram consecutivamente incluídos neste registro prospectivo. O escore GRACE foi rotineiramente utilizado pelos cardiologistas como modelo de risco prognóstico. Estratégia invasiva foi definida como decisão imediata de cinecoronariografia, que na conservadora só era indicada se teste não invasivo positivo ou curso instável. Primeiro, avaliamos a associação entre GRACE e invasividade; segundo, a fim de descobrir atuais determinantes da estratégia invasiva, construímos um modelo de propensão para ela. Foi considerado significante um valor de p < 0,05 para esta análise. Resultados: Em amostra de 570 pacientes, estratégia invasiva foi adotada para 394 (69%). O escore GRACE foi de 118 ± 38 para o grupo invasivo, semelhante a 116 ± 38 do conservador (p = 0,64). O escore de propensão para estratégia invasiva foi derivado da regressão logística: troponina positiva e desvio de ST (associações positivas) e hemoglobina (associação negativa). Esse escore predisse estratégia invasiva com estatística-c de 0,68 (IC95%: 0,63-0,73), contrariando o Escore GRACE (AUC 0,51; IC95%: 0,47-0,57). Conclusão: A dissociação observada entre o valor do Escore GRACE e decisão invasiva em SCA sugere que o pensamento probabilístico pode não ser um importante determinante da decisão médica.


Assuntos
Humanos , Masculino , Feminino , Idoso , Padrões de Prática Médica , Competência Clínica , Síndrome Coronariana Aguda/terapia , Prognóstico , Modelos Logísticos , Curva ROC , Medição de Risco , Tomada de Decisões , Síndrome Coronariana Aguda/diagnóstico , Pessoa de Meia-Idade
13.
Arq Bras Cardiol ; 112(6): 721-726, 2019 06.
Artigo em Inglês, Português | MEDLINE | ID: mdl-30843920

RESUMO

BACKGROUND: Behavioral scientists consistently point out that knowledge does not influence decisions as expected. GRACE Score is a well validated risk model for predicting death of patients with acute coronary syndromes (ACS). However, whether prognostic assessment by this Score modulates medical decision is not known. OBJECTIVE: To test the hypothesis that the use of a validated risk score rationalizes the choice of invasive strategies for higher risk patients with non-ST-elevation ACS. METHODS: ACS patients were consecutively included in this prospective registry. GRACE Score was routinely used by cardiologists as the prognostic risk model. An invasive strategy was defined as an immediate decision of the coronary angiography, which in the selective strategy was only indicated in case of positive non-invasive test or unstable course. Firstly, we evaluated the association between GRACE and invasiviness; secondly, in order to find out the actual determinants of the invasive strategy, we built a propensity model for invasive decision. For this analysis, a p-value < 0.05 was considered as significant. RESULTS: In a sample of 570 patients, an invasive strategy was adopted for 394 (69%). GRACE Score was 118 ± 38 for the invasive group, similar to 116 ± 38 for the selective group (p = 0.64). A propensity score for the invasive strategy was derived from logistic regression: positive troponin and ST-deviation (positive associations) and hemoglobin (negative association). This score predicted an invasive strategy with c-statistics of 0.68 (95%CI: 0.63-0.73), opposed to GRACE Score (AUC 0.51; 95%CI: 0.47-0.57). CONCLUSION: The dissociation between GRACE Score and invasive decision in ACS suggests that the knowledge of prognostic probabilities might not determine medical decision.


Assuntos
Síndrome Coronariana Aguda/terapia , Competência Clínica , Padrões de Prática Médica , Síndrome Coronariana Aguda/diagnóstico , Idoso , Tomada de Decisões , Feminino , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Prognóstico , Curva ROC , Medição de Risco
14.
Arq. bras. cardiol ; 109(6): 527-532, Dec. 2017. tab, graf
Artigo em Inglês | LILACS | ID: biblio-887980

RESUMO

Abstract Background: When performing coronary angiography in patients with acute coronary syndrome (ACS), the anatomical extent of coronary disease usually prevails in the prognostic reasoning. It has not yet been proven if clinical data should be accounted for in risk stratification together with anatomical data. Objective: To test the hypothesis that clinical data increment the prognostic value of anatomical data in patients with ACS. Methods: Patients admitted with objective criteria for ACS and who underwent angiography during hospitalization were included. Primary outcome was defined as in-hospital cardiovascular death, and the prognostic value of the SYNTAX Score (anatomical data) was compared to that of the SYNTAX-GRACE Score, which resulted from the incorporation of the GRACE Score into the SYNTAX score. The Integrated Discrimination Improvement (IDI) was calculated to evaluate the SYNTAX-GRACE Score ability to correctly reclassify information from the traditional SYNTAX model. Results: This study assessed 365 patients (mean age, 64 ± 14 years; 58% male). In-hospital cardiovascular mortality was 4.4%, and the SYNTAX Score was a predictor of that outcome with a C-statistic of 0.81 (95% CI: 0.70 - 0.92; p < 0.001). The GRACE Score was a predictor of in-hospital cardiac death independently of the SYNTAX Score (p < 0.001, logistic regression). After incorporation into the predictive model, the GRACE Score increased the discrimination capacity of the SYNTAX Score from 0.81 to 0.92 (95% CI: 0.87 - 0.96; p = 0.04). Conclusion: In patients with ACS, clinical data complement the prognostic value of coronary anatomy. Risk stratification should be based on the clinical-anatomical paradigm, rather than on angiographic data only.


Resumo Fundamento: Uma vez realizada a coronariografia em pacientes com síndrome coronariana aguda (SCA), a extensão anatômica da doença coronária prevalece no raciocínio prognóstico. Não está estabelecido se dados clínicos devem também ser contabilizados na estimativa de risco, uma vez que se tenha conhecimento da anatomia coronária. Objetivo: Testar a hipótese de que dados clínicos incrementam o valor prognóstico da avaliação anatômica em pacientes com SCA. Métodos: Indivíduos admitidos com critérios objetivos de SCA e que realizaram coronariografia durante o internamento foram incluídos no estudo. Desfecho primário foi definido como óbito cardiovascular hospitalar, sendo comparado o valor prognóstico do Escore SYNTAX (anatomia) com o do escore SYNTAX-GRACE, resultante da incorporação do Escore GRACE ao Escore SYNTAX. O cálculo do Integrated Discrimination Improvement (IDI) foi realizado para avaliar a capacidade do modelo SYNTAX-GRACE para reclassificar corretamente a informação do modelo SYNTAX tradicional. Resultados: Foram estudados 365 pacientes, idade 64±14 anos, 58% masculinos. A mortalidade cardiovascular durante hospitalização foi de 4,4% e o Escore SYNTAX foi preditor desse desfecho com estatística-C de 0,81 (IC 95% = 0,70 - 0,92; p < 0,001). O Escore GRACE mostrou-se preditor de óbito cardiovascular intra-hospitalar, independente do Escore SYNTAX (p < 0,001 por regressão logística). Ao ser incorporado ao modelo preditor, o Escore GRACE incrementou a capacidade discriminatória do SYNTAX de 0,81 para 0,92 (IC 95% = 0,87 - 0,96; p = 0,04). Conclusão: Em pacientes com SCA, dados clínicos complementam o valor prognóstico da anatomia coronária, devendo a estratificação de risco ser baseada no paradigma clínico-anatômico e não apenas em dados angiográficos.


Assuntos
Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Síndrome Coronariana Aguda/diagnóstico , Dados de Saúde Gerados pelo Paciente , Prognóstico , Modelos Logísticos , Estudos Prospectivos , Fatores de Risco , Curva ROC , Técnicas de Apoio para a Decisão , Mortalidade Hospitalar , Angiografia Coronária , Síndrome Coronariana Aguda/mortalidade , Intervenção Coronária Percutânea/mortalidade
15.
Arq Bras Cardiol ; 109(6): 527-532, 2017 Dec.
Artigo em Inglês, Português | MEDLINE | ID: mdl-29160388

RESUMO

BACKGROUND: When performing coronary angiography in patients with acute coronary syndrome (ACS), the anatomical extent of coronary disease usually prevails in the prognostic reasoning. It has not yet been proven if clinical data should be accounted for in risk stratification together with anatomical data. OBJECTIVE: To test the hypothesis that clinical data increment the prognostic value of anatomical data in patients with ACS. METHODS: Patients admitted with objective criteria for ACS and who underwent angiography during hospitalization were included. Primary outcome was defined as in-hospital cardiovascular death, and the prognostic value of the SYNTAX Score (anatomical data) was compared to that of the SYNTAX-GRACE Score, which resulted from the incorporation of the GRACE Score into the SYNTAX score. The Integrated Discrimination Improvement (IDI) was calculated to evaluate the SYNTAX-GRACE Score ability to correctly reclassify information from the traditional SYNTAX model. RESULTS: This study assessed 365 patients (mean age, 64 ± 14 years; 58% male). In-hospital cardiovascular mortality was 4.4%, and the SYNTAX Score was a predictor of that outcome with a C-statistic of 0.81 (95% CI: 0.70 - 0.92; p < 0.001). The GRACE Score was a predictor of in-hospital cardiac death independently of the SYNTAX Score (p < 0.001, logistic regression). After incorporation into the predictive model, the GRACE Score increased the discrimination capacity of the SYNTAX Score from 0.81 to 0.92 (95% CI: 0.87 - 0.96; p = 0.04). CONCLUSION: In patients with ACS, clinical data complement the prognostic value of coronary anatomy. Risk stratification should be based on the clinical-anatomical paradigm, rather than on angiographic data only.


Assuntos
Síndrome Coronariana Aguda/diagnóstico , Dados de Saúde Gerados pelo Paciente , Síndrome Coronariana Aguda/mortalidade , Angiografia Coronária , Técnicas de Apoio para a Decisão , Feminino , Mortalidade Hospitalar , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Intervenção Coronária Percutânea/mortalidade , Prognóstico , Estudos Prospectivos , Curva ROC , Fatores de Risco
16.
Arq. bras. cardiol ; 109(2): 97-102, Aug. 2017. tab, graf
Artigo em Inglês | LILACS | ID: biblio-887915

RESUMO

Abstract Background: The accuracy of zero coronary calcium score as a filter in patients with chest pain has been demonstrated at the emergency room and outpatient clinics, populations with low prevalence of coronary artery disease (CAD). Objective: To test the gatekeeping role of zero calcium score in patients with chest pain admitted to the coronary care unit (CCU), where the pretest probability of CAD is higher than that of other populations. Methods: Patients underwent computed tomography for calcium scoring, and obstructive CAD was defined by a minimum 70% stenosis on invasive angiography. Results: In 146 patients studied, the prevalence of CAD was 41%. A zero calcium score was present in 35% of the patients. The sensitivity and specificity of zero calcium score yielded a negative likelihood ratio of 0.16. After logistic regression adjustment for pretest probability, zero calcium score was independently associated with lower odds of CAD (OR = 0.12, 95%CI = 0.04-0.36), increasing the area under the ROC curve of the clinical model from 0.76 to 0.82 (p = 0.006). Zero calcium score provided a net reclassification improvement of 0.20 (p = 0.0018) over the clinical model when using a pretest probability threshold of 10% for discharging without further testing. In patients with pretest probability < 50%, zero calcium score had a negative predictive value of 95% (95%CI = 83%-99%), with a number needed to test of 2.1 for obtaining one additional discharge. Conclusion: Zero calcium score substantially reduces the pretest probability of obstructive CAD in patients admitted to the CCU with acute chest pain. (Arq Bras Cardiol. 2017; [online].ahead print, PP.0-0)


Resumo Fundamento: A acurácia do escore de cálcio coronário zero como um filtro nos pacientes com dor torácica aguda tem sido demonstrada na sala de emergência e nos ambulatórios, populações com baixa prevalência de doença arterial coronariana (DAC). Objetivos: Testar o papel do escore de cálcio zero como filtro nos pacientes com dor torácica admitidos numa unidade coronariana intensiva (UCI), na qual a probabilidade pré-teste de DAC é maior do que em outras populações. Métodos: Pacientes foram submetidos a tomografia computadorizada para quantificar o escore de cálcio, DAC obstrutiva foi definida por uma estenose mínima de 70% na cineangiocoronariografia invasiva. Um escore clínico para estimar a probabilidade pré-teste de DAC obstrutiva foi criado em amostra de 370 pacientes, usado para definir subgrupos na definição de valores preditivos negativos do escore zero. Resultados: Em 146 pacientes estudados, a prevalência de DAC foi 41% e o escore de cálcio zero foi demonstrado em 35% deles. A sensibilidade e a especificidade para escore de cálcio zero resultaram numa razão de verossimilhança negativa de 0,16. Após ajuste com um escore clínico com a regressão logística para a probabilidade pré-teste, o escore de cálcio zero foi preditor independente associado a baixa probabilidade de DAC (OR = 0,12, IC95% = 0,04-0,36), aumentando a área abaixo da curva ROC do modelo clínico de 0,76 para 0,82 (p = 0,006). Considerando a probabilidade de DAC < 10% como ponto de corte para alta precoce, o escore de cálcio aumentou a proporção de pacientes para alta precoce de 8,2% para 25% (NRI = 0,20; p = 0,0018). O escore de cálcio zero apresentou valor preditivo negativo de 90%. Em pacientes com probabilidade pré-teste < 50%, o valor preditivo negativo foi 95% (IC95% = 83%-99%). Conclusão: O escore de cálcio zero reduz substancialmente a probabilidade pré-teste de DAC obstrutiva em pacientes internados em UCI com dor torácica aguda. (Arq Bras Cardiol. 2017; [online].ahead print, PP.0-0)

17.
Arq Bras Cardiol ; : 0, 2017 Jun 12.
Artigo em Inglês, Português | MEDLINE | ID: mdl-28614421

RESUMO

BACKGROUND:: The accuracy of zero coronary calcium score as a filter in patients with chest pain has been demonstrated at the emergency room and outpatient clinics, populations with low prevalence of coronary artery disease (CAD). OBJECTIVE:: To test the gatekeeping role of zero calcium score in patients with chest pain admitted to the coronary care unit (CCU), where the pretest probability of CAD is higher than that of other populations. METHODS:: Patients underwent computed tomography for calcium scoring, and obstructive CAD was defined by a minimum 70% stenosis on invasive angiography. RESULTS:: In 146 patients studied, the prevalence of CAD was 41%. A zero calcium score was present in 35% of the patients. The sensitivity and specificity of zero calcium score yielded a negative likelihood ratio of 0.16. After logistic regression adjustment for pretest probability, zero calcium score was independently associated with lower odds of CAD (OR = 0.12, 95%CI = 0.04-0.36), increasing the area under the ROC curve of the clinical model from 0.76 to 0.82 (p = 0.006). Zero calcium score provided a net reclassification improvement of 0.20 (p = 0.0018) over the clinical model when using a pretest probability threshold of 10% for discharging without further testing. In patients with pretest probability < 50%, zero calcium score had a negative predictive value of 95% (95%CI = 83%-99%), with a number needed to test of 2.1 for obtaining one additional discharge. CONCLUSION:: Zero calcium score substantially reduces the pretest probability of obstructive CAD in patients admitted to the CCU with acute chest pain. (Arq Bras Cardiol. 2017; [online].ahead print, PP.0-0). FUNDAMENTO:: A acurácia do escore de cálcio coronário zero como um filtro nos pacientes com dor torácica aguda tem sido demonstrada na sala de emergência e nos ambulatórios, populações com baixa prevalência de doença arterial coronariana (DAC). OBJETIVOS:: Testar o papel do escore de cálcio zero como filtro nos pacientes com dor torácica admitidos numa unidade coronariana intensiva (UCI), na qual a probabilidade pré-teste de DAC é maior do que em outras populações. MÉTODOS:: Pacientes foram submetidos a tomografia computadorizada para quantificar o escore de cálcio, DAC obstrutiva foi definida por uma estenose mínima de 70% na cineangiocoronariografia invasiva. Um escore clínico para estimar a probabilidade pré-teste de DAC obstrutiva foi criado em amostra de 370 pacientes, usado para definir subgrupos na definição de valores preditivos negativos do escore zero. RESULTADOS:: Em 146 pacientes estudados, a prevalência de DAC foi 41% e o escore de cálcio zero foi demonstrado em 35% deles. A sensibilidade e a especificidade para escore de cálcio zero resultaram numa razão de verossimilhança negativa de 0,16. Após ajuste com um escore clínico com a regressão logística para a probabilidade pré-teste, o escore de cálcio zero foi preditor independente associado a baixa probabilidade de DAC (OR = 0,12, IC95% = 0,04-0,36), aumentando a área abaixo da curva ROC do modelo clínico de 0,76 para 0,82 (p = 0,006). Considerando a probabilidade de DAC < 10% como ponto de corte para alta precoce, o escore de cálcio aumentou a proporção de pacientes para alta precoce de 8,2% para 25% (NRI = 0,20; p = 0,0018). O escore de cálcio zero apresentou valor preditivo negativo de 90%. Em pacientes com probabilidade pré-teste < 50%, o valor preditivo negativo foi 95% (IC95% = 83%-99%). CONCLUSÃO:: O escore de cálcio zero reduz substancialmente a probabilidade pré-teste de DAC obstrutiva em pacientes internados em UCI com dor torácica aguda. (Arq Bras Cardiol. 2017; [online].ahead print, PP.0-0).

18.
Arq Bras Cardiol ; 108(4): 304-314, 2017 Apr.
Artigo em Inglês, Português | MEDLINE | ID: mdl-28538760

RESUMO

BACKGROUND:: Currently, there is no validated multivariate model to predict probability of obstructive coronary disease in patients with acute chest pain. OBJECTIVE:: To develop and validate a multivariate model to predict coronary artery disease (CAD) based on variables assessed at admission to the coronary care unit (CCU) due to acute chest pain. METHODS:: A total of 470 patients were studied, 370 utilized as the derivation sample and the subsequent 100 patients as the validation sample. As the reference standard, angiography was required to rule in CAD (stenosis ≥ 70%), while either angiography or a negative noninvasive test could be used to rule it out. As predictors, 13 baseline variables related to medical history, 14 characteristics of chest discomfort, and eight variables from physical examination or laboratory tests were tested. RESULTS:: The prevalence of CAD was 48%. By logistic regression, six variables remained independent predictors of CAD: age, male gender, relief with nitrate, signs of heart failure, positive electrocardiogram, and troponin. The area under the curve (AUC) of this final model was 0.80 (95% confidence interval [95%CI] = 0.75 - 0.84) in the derivation sample and 0.86 (95%CI = 0.79 - 0.93) in the validation sample. Hosmer-Lemeshow's test indicated good calibration in both samples (p = 0.98 and p = 0.23, respectively). Compared with a basic model containing electrocardiogram and troponin, the full model provided an AUC increment of 0.07 in both derivation (p = 0.0002) and validation (p = 0.039) samples. Integrated discrimination improvement was 0.09 in both derivation (p < 0.001) and validation (p < 0.0015) samples. CONCLUSION:: A multivariate model was derived and validated as an accurate tool for estimating the pretest probability of CAD in patients with acute chest pain. FUNDAMENTO:: Atualmente, não existe um modelo multivariado validado para predizer a probabilidade de doença coronariana obstrutiva em pacientes com dor torácica aguda. OBJETIVO:: Desenvolver e validar um modelo multivariado para predizer doença arterial coronariana (DAC) com base em variáveis avaliadas à admissão na unidade coronariana (UC) devido a dor torácica aguda. MÉTODOS:: Foram estudados um total de 470 pacientes, 370 utilizados como amostra de derivação e os subsequentes 100 pacientes como amostra de validação. Como padrão de referência, a angiografia foi necessária para descartar DAC (estenose ≥ 70%), enquanto a angiografia ou um teste não invasivo negativo foi utilizado para confirmar a doença. Foram testadas como preditoras 13 variáveis basais relacionadas à história médica, 14 características de desconforto torácico e oito variáveis relacionadas ao exame físico ou testes laboratoriais. RESULTADOS:: A prevalência de DAC foi de 48%. Por regressão logística, seis variáveis permaneceram como preditoras independentes de DAC: idade, gênero masculino, alívio com nitrato, sinais de insuficiência cardíaca, e eletrocardiograma e troponina positivos. A área sob a curva (area under the curve, AUC) deste modelo final foi de 0,80 (intervalo de confiança de 95% [IC95%] = 0,75 - 0,84) na amostra de derivação e 0,86 (IC95% = 0,79 - 0,93) na amostra de validação. O teste de Hosmer-Lemeshow indicou uma boa calibração em ambas as amostras (p = 0,98 e p = 0,23, respectivamente). Em comparação com o modelo básico contendo eletrocardiograma e troponina, o modelo completo ofereceu um incremento na AUC de 0,07 tanto na amostra de derivação (p = 0,0002) quanto na de validação (p = 0,039). A melhoria na discriminação integrada foi de 0,09 nas amostras de derivação (p < 0,001) e validação (p < 0,0015). CONCLUSÃO:: Um modelo multivariado foi derivado e validado como uma ferramenta acurada para estimar a probabilidade pré-teste de DAC em pacientes com dor torácica aguda.


Assuntos
Dor no Peito/diagnóstico , Doença da Artéria Coronariana/diagnóstico , Modelos Estatísticos , Doença Aguda , Adulto , Fatores Etários , Idoso , Área Sob a Curva , Dor no Peito/classificação , Dor no Peito/tratamento farmacológico , Angiografia Coronária , Doença da Artéria Coronariana/diagnóstico por imagem , Doença da Artéria Coronariana/mortalidade , Eletrocardiografia/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Nitratos/uso terapêutico , Valor Preditivo dos Testes , Sensibilidade e Especificidade , Fatores Sexuais , Troponina/sangue
19.
World J Cardiol ; 9(3): 241-247, 2017 Mar 26.
Artigo em Inglês | MEDLINE | ID: mdl-28400920

RESUMO

AIM: To test accuracy and reproducibility of gestalt to predict obstructive coronary artery disease (CAD) in patients with acute chest pain. METHODS: We studied individuals who were consecutively admitted to our Chest Pain Unit. At admission, investigators performed a standardized interview and recorded 14 chest pain features. Based on these features, a cardiologist who was blind to other clinical characteristics made unstructured judgment of CAD probability, both numerically and categorically. As the reference standard for testing the accuracy of gestalt, angiography was required to rule-in CAD, while either angiography or non-invasive test could be used to rule-out. In order to assess reproducibility, a second cardiologist did the same procedure. RESULTS: In a sample of 330 patients, the prevalence of obstructive CAD was 48%. Gestalt's numerical probability was associated with CAD, but the area under the curve of 0.61 (95%CI: 0.55-0.67) indicated low level of accuracy. Accordingly, categorical definition of typical chest pain had a sensitivity of 48% (95%CI: 40%-55%) and specificity of 66% (95%CI: 59%-73%), yielding a negligible positive likelihood ratio of 1.4 (95%CI: 0.65-2.0) and negative likelihood ratio of 0.79 (95%CI: 0.62-1.02). Agreement between the two cardiologists was poor in the numerical classification (95% limits of agreement = -71% to 51%) and categorical definition of typical pain (Kappa = 0.29; 95%CI: 0.21-0.37). CONCLUSION: Clinical judgment based on a combination of chest pain features is neither accurate nor reproducible in predicting obstructive CAD in the acute setting.

20.
Arq. bras. cardiol ; 108(4): 304-314, Apr. 2017. tab, graf
Artigo em Inglês | LILACS | ID: biblio-838720

RESUMO

Abstract Background: Currently, there is no validated multivariate model to predict probability of obstructive coronary disease in patients with acute chest pain. Objective: To develop and validate a multivariate model to predict coronary artery disease (CAD) based on variables assessed at admission to the coronary care unit (CCU) due to acute chest pain. Methods: A total of 470 patients were studied, 370 utilized as the derivation sample and the subsequent 100 patients as the validation sample. As the reference standard, angiography was required to rule in CAD (stenosis ≥ 70%), while either angiography or a negative noninvasive test could be used to rule it out. As predictors, 13 baseline variables related to medical history, 14 characteristics of chest discomfort, and eight variables from physical examination or laboratory tests were tested. Results: The prevalence of CAD was 48%. By logistic regression, six variables remained independent predictors of CAD: age, male gender, relief with nitrate, signs of heart failure, positive electrocardiogram, and troponin. The area under the curve (AUC) of this final model was 0.80 (95% confidence interval [95%CI] = 0.75 - 0.84) in the derivation sample and 0.86 (95%CI = 0.79 - 0.93) in the validation sample. Hosmer-Lemeshow's test indicated good calibration in both samples (p = 0.98 and p = 0.23, respectively). Compared with a basic model containing electrocardiogram and troponin, the full model provided an AUC increment of 0.07 in both derivation (p = 0.0002) and validation (p = 0.039) samples. Integrated discrimination improvement was 0.09 in both derivation (p < 0.001) and validation (p < 0.0015) samples. Conclusion: A multivariate model was derived and validated as an accurate tool for estimating the pretest probability of CAD in patients with acute chest pain.


Resumo Fundamento: Atualmente, não existe um modelo multivariado validado para predizer a probabilidade de doença coronariana obstrutiva em pacientes com dor torácica aguda. Objetivo: Desenvolver e validar um modelo multivariado para predizer doença arterial coronariana (DAC) com base em variáveis avaliadas à admissão na unidade coronariana (UC) devido a dor torácica aguda. Métodos: Foram estudados um total de 470 pacientes, 370 utilizados como amostra de derivação e os subsequentes 100 pacientes como amostra de validação. Como padrão de referência, a angiografia foi necessária para descartar DAC (estenose ≥ 70%), enquanto a angiografia ou um teste não invasivo negativo foi utilizado para confirmar a doença. Foram testadas como preditoras 13 variáveis basais relacionadas à história médica, 14 características de desconforto torácico e oito variáveis relacionadas ao exame físico ou testes laboratoriais. Resultados: A prevalência de DAC foi de 48%. Por regressão logística, seis variáveis permaneceram como preditoras independentes de DAC: idade, gênero masculino, alívio com nitrato, sinais de insuficiência cardíaca, e eletrocardiograma e troponina positivos. A área sob a curva (area under the curve, AUC) deste modelo final foi de 0,80 (intervalo de confiança de 95% [IC95%] = 0,75 - 0,84) na amostra de derivação e 0,86 (IC95% = 0,79 - 0,93) na amostra de validação. O teste de Hosmer-Lemeshow indicou uma boa calibração em ambas as amostras (p = 0,98 e p = 0,23, respectivamente). Em comparação com o modelo básico contendo eletrocardiograma e troponina, o modelo completo ofereceu um incremento na AUC de 0,07 tanto na amostra de derivação (p = 0,0002) quanto na de validação (p = 0,039). A melhoria na discriminação integrada foi de 0,09 nas amostras de derivação (p < 0,001) e validação (p < 0,0015). Conclusão: Um modelo multivariado foi derivado e validado como uma ferramenta acurada para estimar a probabilidade pré-teste de DAC em pacientes com dor torácica aguda.


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Idoso , Dor no Peito/diagnóstico , Doença da Artéria Coronariana/diagnóstico , Modelos Estatísticos , Troponina/sangue , Dor no Peito/classificação , Dor no Peito/tratamento farmacológico , Doença da Artéria Coronariana/mortalidade , Doença da Artéria Coronariana/diagnóstico por imagem , Fatores Sexuais , Doença Aguda , Análise Multivariada , Valor Preditivo dos Testes , Sensibilidade e Especificidade , Fatores Etários , Angiografia Coronária , Área Sob a Curva , Eletrocardiografia/métodos , Nitratos/uso terapêutico
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