OBJECTIVE: The D allele of the I/D polymorphism in the angiotensin-converting enzyme (ACE) gene has been associated with an increased risk of ARDS in critically ill adults and severity of bronchopulmonary dysplasia in pre-term infants. We hypothesised that the presence of the hypoxia-associated ACE D allele would increase susceptibility to acute hypoxic respiratory failure (AHRF) in a cohort of critically ill children. DESIGN AND SETTING: Single-centre prospective observational cohort study. PATIENTS: Children under 16 years of age requiring admission to a tertiary general PICU. MEASUREMENTS AND RESULTS: A total of 216 Caucasian patients were enrolled. Thirty (13.9%) children developed AHRF and 13 were diagnosed with ARDS (6.0%). There was no significant difference in ACE D allele frequency between patient groups with or without AHRF (0.53 vs. 0.54). CONCLUSIONS: Variation in ACE activity does not influence the development of paediatric AHRF. This may reflect a different pathogenesis from adult ARDS.
OBJECTIVE: The D allele of the I/D polymorphism in the angiotensin-converting enzyme (ACE) gene has been associated with an increased risk of ARDS in critically ill adults and severity of bronchopulmonary dysplasia in pre-term infants. We hypothesised that the presence of the hypoxia-associated ACE D allele would increase susceptibility to acute hypoxic respiratory failure (AHRF) in a cohort of critically ill children. DESIGN AND SETTING: Single-centre prospective observational cohort study. PATIENTS: Children under 16 years of age requiring admission to a tertiary general PICU. MEASUREMENTS AND RESULTS: A total of 216 Caucasian patients were enrolled. Thirty (13.9%) children developed AHRF and 13 were diagnosed with ARDS (6.0%). There was no significant difference in ACE D allele frequency between patient groups with or without AHRF (0.53 vs. 0.54). CONCLUSIONS: Variation in ACE activity does not influence the development of paediatric AHRF. This may reflect a different pathogenesis from adult ARDS.
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