ABSTRACT
ABSTRACT OBJECTIVE To analyze the association of characteristics recorded at the time of birth, including weight, occurrence of asphyxia, gestation duration, maternal age and education level, with death from diseases or malformations of the circulatory system in children under 18 years of age. METHODS The Brazilian Information System on Live Births and Information System on Mortality databases were linked and evaluated following a longitudinal cohort analysis strategy. The following independent variables were evaluated: characteristics recorded at the time of birth, including weight, occurrence of asphyxia, gestation duration, maternal age and education level. Dependent variables were death from diseases or malformations of the circulatory system in children under 18 years of age. Crude relative risks were estimated and relative risks were adjusted for the variables. RESULTS 6,380 deaths were linked to 4,282,260 birth records, yielding 5,062 pairs considered as true. Low birth weight (RR = 2.26), asphyxia at 1 (RR = 1.72) and 5 minutes (RR = 1.51), prematurity (RR = 1.50), maternal age ≥ 40 years (RR = 2.06), and low maternal education level (RR = 1.45) increased the probability of death caused by circulatory system diseases. In the association with death by malformations of the circulatory system, the predictive variables showed the same association profile, but with greater intensity. CONCLUSIONS Fetal and maternal factors are associated with increased mortality due to diseases and malformations of the circulatory system. Measures to control these factors and improve access to their diagnosis and treatment would contribute to reducing the number of deaths caused by diseases and malformations of the circulatory system. However, the identification of environmental influences during gestation and birth on the risk of death should be carefully considered due to being influenced by genetic factors.
Subject(s)
Humans , Male , Female , Infant, Newborn , Infant , Child, Preschool , Child , Adolescent , Infant, Low Birth Weight , Cardiovascular Diseases/etiology , Cardiovascular Diseases/mortality , Brazil , Birth Certificates , Infant Mortality , Risk Factors , Longitudinal Studies , Cause of Death , Maternal Age , Cardiovascular Abnormalities/mortality , Heart Defects, Congenital/mortalityABSTRACT
Abstract Background: Congenital heart diseases are the most common type of congenital defects, and account for more deaths in the first year of life than any other condition, when infectious etiologies are ruled out. Objectives: To evaluate survival, and to identify risk factors in deaths in newborns with critical and/or complex congenital heart disease in the neonatal period. Methods: A cohort study, nested to a randomized case-control, was performed, considering the Confidence Interval of 95% (95% CI) and significance level of 5%, paired by gender of the newborn and maternal age. Case-finding, interviews, medical record analysis, clinical evaluation of pulse oximetry (heart test) and Doppler echocardiogram were performed, as well as survival analysis, and identification of death-related risk factors. Results: The risk factors found were newborns younger than 37 weeks (Relative Risk - RR: 2.89; 95% CI [1.49-5.56]; p = 0.0015), weight of less than 2,500 grams (RR: 2.33 [; 95% CI 1.26-4.29]; p = 0.0068), occurrence of twinning (RR: 11.96 [95% CI 1.43-99.85]; p = 0.022) and presence of comorbidity (RR: 2.27 [95% CI 1.58-3.26]; p < 0.0001). The incidence rate of mortality from congenital heart disease was 81 cases per 100,000 live births. The lethality attributed to critical congenital heart diseases was 64.7%, with proportional mortality of 12.0%. The survival rate at 28 days of life decreased by almost 70% in newborns with congenital heart disease. The main cause of death was cardiogenic shock. Conclusion: Preterm infants with low birth weight and comorbidities presented a higher risk of mortality related to congenital heart diseases. This cohort was extinguished very quickly, signaling the need for greater investment in assistance technology in populations with this profile.
Resumo Fundamento: As cardiopatias congênitas configuram o tipo mais comum de defeitos congênitos, sendo responsáveis por mais mortes no primeiro ano de vida do que em qualquer outra condição, quando etiologias infecciosas são excluídas. Objetivo: Avaliar a sobrevida e identificar os fatores de risco nos óbitos em recém-nascidos com cardiopatia congênita crítica e/ou complexa no período neonatal. Métodos: Realizou-se um estudo de coorte, aninhado a um caso-controle aleatorizado, considerando Intervalo de Confiança de 95% (IC95%) e nível de significância de 5%, pareado por sexo do recém-nascido e idade materna. Foram feitas buscas ativas de casos, entrevistas, análise de prontuário, avaliação clínica da oximetria de pulso (teste do coraçãozinho) e do ecoDopplercardiograma, bem como análise de sobrevida e identificação dos fatores de risco relacionados ao óbito. Resultados: Os fatores de risco encontrados foram recém-nascidos com menos de 37 semanas (Risco Relativo − RR: 2,89; IC95% 1,49-5,56; p = 0,0015), peso inferior a 2.500 g (RR: 2,33; IC95% 1,26-4,29; p = 0,0068), ocorrência de gemelaridade (RR: 11,96; IC95% 1,43-99,85; p = 0,022) e presença de comorbidade (RR: 2,27; IC95% 1,58-3,26; p < 0,0001). A taxa de incidência de mortalidade por cardiopatias congênitas foi de 81 casos por 100 mil nascidos vivos. A letalidade atribuída às cardiopatias congênitas críticas foi de 64,7%, com mortalidade proporcional de 12,0%. A taxa de sobrevida aos 28 dias de vida diminuiu em quase 70% nos recém-nascidos com cardiopatias congênitas. A principal causa de óbito foi o choque cardiogênico. Conclusão: Recém-nascidos prematuros, com baixo peso e presença de comorbidades apresentaram maior risco de mortalidade relacionada às cardiopatias congênitas. Esta coorte se extinguiu muito rapidamente, sinalizando para a necessidade de maior investimento em tecnologia assistencial em populações com este perfil.
Subject(s)
Humans , Male , Female , Pregnancy , Infant , Aorta, Thoracic/abnormalities , Aortic Arch Syndromes/mortality , Heart Defects, Congenital/mortality , Brazil , Infant, Low Birth Weight , Oximetry/mortality , Case-Control Studies , Comorbidity , Survival Analysis , Risk Factors , Cohort Studies , Critical Illness , Premature Birth/mortality , Diseases in Twins/mortalityABSTRACT
RESUMO Objetivo: Avaliar o desempenho do Pediatric Index of Mortality (PIM) 2 e do Escore de Risco Ajustado para Cirurgia Cardíaca Congênita (RACHS) no pós-operatório de cardiopatas congênitos. Métodos: Estudo transversal retrospectivo. Foram coletados dados de prontuário para gerar os escores e predições com as técnicas preconizadas, os dados demográficos e os desfechos. Para estatística, utilizaram-se o teste de Mann-Whitney, o teste de Hosmer-Lemeshow, a taxa de mortalidade padronizada, a área sobre a curva COR, qui quadrado, regressão de Poisson com variância robusta e teste de Spearman. Resultados: Foram avaliados 263 pacientes, e 72 foram a óbito (27,4%). Estes apresentaram valores de PIM-2 significativamente maiores que os sobreviventes (p < 0,001). Na classificação RACHS-1, a mortalidade foi progressivamente maior, de acordo com a complexidade do procedimento, com aumento de 3,24 vezes na comparação entre os grupos 6 e 2. A área abaixo da curva COR para o PIM-2 foi 0,81 (IC95% 0,75 - 0,87) e, para RACHS-1, de 0,70 (IC95% 0,63 - 0,77). A RACHS apresentou melhor poder de calibração na amostra analisada. Foi encontrada correlação significativamente positiva entre os resultados de ambos os escores (rs = 0,532; p < 0,001). Conclusão: A RACHS apresentou bom poder de calibração, e RACHS-1 e PIM-2 demonstraram bom desempenho quanto à capacidade de discriminação entre sobreviventes e não sobreviventes. Ainda, foi encontrada correlação positiva entre os resultados dos dois escores de risco.
ABSTRACT Objective: To assess the performance of the Pediatric Index of Mortality (PIM) 2 and the Risk Adjustment for Congenital Heart Surgery (RACHS) in the postoperative period of congenital heart disease patients. Methods: Retrospective cross-sectional study. Data were collected from patient records to generate the scores and predictions using recommended techniques, demographic data and outcomes. The Mann-Whitney test, Hosmer-Lemeshow test, standardized mortality rate, area under the receiver operating characteristic (ROC) curve, chi square test, Poisson regression with robust variance and Spearman's test were used for statistical analysis. Results: A total of 263 patients were evaluated, and 72 died (27.4%). These patients presented significantly higher PIM-2 values than survivors (p < 0.001). In the RACHS-1 classification, mortality was progressively higher according to the complexity of the procedure, with a 3.24-fold increase in the comparison between groups 6 and 2. The area under the ROC curve for PIM-2 was 0.81 (95%CI 0.75 - 0.87), while for RACHS-1, it was 0.70 (95%CI 0.63 - 0.77). The RACHS presented better calibration power in the sample analyzed. A significantly positive correlation was found between the results of both scores (rs = 0.532; p < 0.001). Conclusion: RACHS presented good calibration power, and RACHS-1 and PIM-2 demonstrated good performance with regard to their discriminating capacities between survivors and non-survivors. Moreover, a positive correlation was found between the results of the two risk scores.