Abstract
The purpose of this historical study was to compare the outcome for two treatment strategies, for neonates with congenital diaphragmatic hernia (CDH). The records of 65 infants born between 1991 and 2005 with CDH from a single tertiary care perinatal centre in the United Kingdom were retrospectively reviewed. Conventional mechanical ventilation (CMV) and systemic vasodilators were used from 1991 to 1995 (era 1). High frequency oscillatory ventilation (HFOV) and nitric oxide (NO) were used between 1996 and 2005 (era 2). Main outcome measures were survival and incidence of chronic lung disease. The results showed that the survival rate was 38% (8/21) in era 1 and 73% (32/44) in era 2, 95% CI for difference -59 to -10%. The incidence of chronic lung disease in survivors was 45% (5/11) in era 1 and 30% (9/30) in era 2, 95% CI for difference -18 to 49%. These data show significantly improved survival with elective use of HFOV and NO compared to CMV and systemic vasodilators. The survival results for CDH at St George's Hospital are comparable to those published from other institutions. The results may reflect a reduction in ventilator-induced lung injury with HFOV compared to CMV.
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