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J Pediatr ; 207: 29-33.e1, 2019 04.
Artículo en Inglés | MEDLINE | ID: mdl-30922502

RESUMEN

OBJECTIVE: To determine the seasonal trend of congenital heart defects (CHDs) in China using hospital-based clinical data. STUDY DESIGN: We included 40 501 patients with CHD hospitalized at the Shanghai Children Medical Center between 2006 and 2017. The birth rate of CHD in each month was adjusted by sex, year of birth, and monthly birth rate of the general population. Negative binomial regression models were used to assess the seasonal trend of CHD. RESULTS: The included patients consisted of 22 600 boys (55.8%), resulting in a male-to-female ratio of 1.26:1. Among subtypes of CHDs, ventricular septal defects and atrial septal defects were the most common, accounting for 39.7% and 12.6%, respectively. A statistically significant seasonal trend in the monthly birth rate of patients with CHDs was found; the highest relative rate of CHD was found in October and the lowest in April. After adjusting for the potential confounders, the highest relative rate of CHD was found in October and the lowest in November. CONCLUSIONS: There seems to be a significant monthly birth rate variation of CHDs in China. The highest relative rate of CHDs occurred in October, suggesting possible maternal exposure to environmental hazards from January to March. These hazards may include air pollution, virus infection, and unhealthy lifestyle behaviors during the Spring Festival.


Asunto(s)
Cardiopatías Congénitas/epidemiología , Estaciones del Año , Tasa de Natalidad , Preescolar , China/epidemiología , Estudios Transversales , Femenino , Cardiopatías Congénitas/etiología , Humanos , Lactante , Recién Nacido , Masculino , Embarazo , Efectos Tardíos de la Exposición Prenatal/etiología , Estudios Retrospectivos
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