The purpose of this study was to evaluate the outcome in neonates with congenital diaphragmatic hernia (CDH) either presenting within the first 24 h of life or diagnosed prenatally. The study was particularly focused on the time of onset of respiratory distress and on the use of the Gore-Tex (GT) patch for diaphragmatic reconstruction. Records of 104 neonates with CDH were retrospectively reviewed. The data were analyzed by ANOVA, Kruskal-Wallis test or chi (2) test as appropriate. The result showed that the overall survival rate was 73.1% (76/104). Survival of operated neonates was 91.6% (76/83). Postnatally diagnosed neonates with the onset of respiratory distress within the first minute of life survived in 67%, with the onset between 2 and 10 min survived in 89%, whilst neonates with the onset of respiratory distress after l0 min survived in 100% (P = 0.007). Birth weight, gestational age, time of onset of respiratory distress and Apgar score significantly differed between survivors and nonsurvivors. Primary closure of the diaphragmatic defect was performed in 62 patients while the GT patch was used in 21 patients. The survival of patients with a large defect treated with a GT patch was lower (76.2 vs. 96.8%, P = 0.003). There was only one case of recurrence in our series with the GT patch. Survival depends on the time of onset of respiratory distress and size of the defect, both of which correlate with the degree of pulmonary hypoplasia. The term high-risk CDH is appropriate only for children with respiratory distress within the first 10 min of life and those diagnosed prenatally. The GT patch is a suitable material for the diaphragmatic reconstruction; we suppose that the recurrence is caused by incorrect attachment of the patch to the thoracic wall.

Department of Pediatric Surgery 2nd Faculty of Medicine and Teaching Hospital in Motol Charles University Prague 5 úvalu 84 Prague 5 15000 Czech Republic

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