Abstract
Purpose
The mortality rate for congenital diaphragmatic hernia (CDH) remains high and prevention efforts are limited by the lack of known risk factors. The aim of this study was to determine prevalence, risk factors, and neonatal results associated with CDH on a surveillance system hospital-based in Bogotá, Colombia.
Methods
The data used in this study were obtained from The Bogota Birth Defects Surveillance and Follow-up Program (BBDSFP), between January 2001 and December 2013. With 386,419 births, there were 81 cases of CDH. A case–control methodology was conducted with 48 of the total cases of CDH and 192 controls for association analysis.
Results
The prevalence of CDH was 2.1 per 10,000 births. In the case–control analysis, risk factors found were maternal age ≥35 years (OR, 33.53; 95 % CI, 7.02–160.11), infants with CDH were more likely to be born before 37 weeks of gestation (OR, 5.57; 95 % CI, 2.05–15.14), to weigh less than 2500 g at birth (OR, 9.05; 95 % CI, 3.51–23.32), and be small for gestational age (OR, 5.72; 95 % CI, 2.18–14.99) with a high rate of death before hospital discharge in the CDH population (CDH: 38 % vs BBDSFP: <1 %; p < 0.001).
Conclusions
The prevalence of CDH calculated was similar to the one reported in the literature. CDH is strongly associated with a high rate of death before hospital discharge and the risk factors found were maternal age ≥35 years, preterm birth, be small for gestational age, and have low weight at birth. These neonatal characteristics in developing countries would help to identify early CDH. Prevention efforts have been limited by the lack of known risk factors and established epidemiological profiles, especially in developing countries.
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Abbreviations
- CDH:
-
Congenital diaphragmatic hernia
- BBDSFP:
-
The Bogota Birth Defects Surveillance and Follow-up Program
- BMI:
-
Maternal Body Mass Index
- CNS:
-
Central nervous system
- ECLAMC:
-
Latin American Collaborative Study of Congenital Malformations
- ICBDSR:
-
International Clearinghouse for Birth Defects Surveillance and Research
- ECMO:
-
Extracorporeal membrane oxygenation
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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García, A.M., Machicado, S., Gracia, G. et al. Risk factors for congenital diaphragmatic hernia in the Bogota birth defects surveillance and follow-up program, Colombia. Pediatr Surg Int 32, 227–234 (2016). https://doi.org/10.1007/s00383-015-3832-7
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DOI: https://doi.org/10.1007/s00383-015-3832-7