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Revista Brasileira de Ginecologia e Obstetrícia

versão impressa ISSN 0100-7203

Resumo

PERALTA, Cleisson Fábio Andrioli et al. Tracheal occlusion for fetuses with severe isolated left-sided diaphragmatic hernia: a nonrandomized controlled experimental study. Rev. Bras. Ginecol. Obstet. [online]. 2011, vol.33, n.12, pp.381-387. ISSN 0100-7203.  https://doi.org/10.1590/S0100-72032011001200002.

PURPOSE: To compare postnatal survival to hospital discharge of fetuses with severe isolated left-sided congenital diaphragmatic hernia, who underwent tracheal occlusion, with that of nonrandomized contemporaneous controls. METHODS: Experimental nonrandomized controlled study, performed from April 2007 to September 2011. Fetuses with severe isolated left-sided congenital diaphragmatic hernia with liver herniation into the chest and lung area-to-head circumference ratio <1.0, who underwent tracheal occlusion (study group) or expectant management (non-randomized contemporaneous controls), were compared in terms of lung area-to-head circumference ratio and observed/expected lung area-to-head circumference ratio (observed/expected lung area-to-head circumference ratio) at the time of diagnosis, gestational age at birth, and survival to hospital discharge. Modifications in lung area-to-head circumference ratio and o/e lung area-to-head circumference ratio after tracheal occlusion were also analyzed. Fisher's exact test, Mann-Whitney's or Wilcoxon's tests were used for the comparisons. RESULTS: There were no significant differences between the Study Group (TO=28) and Controls (n=13) in terms of the lung area-to-head circumference ratio (p=0.709) and the observed/expected lung area-to-head circumference ratio (p=0.5) at the time of diagnosis and gestational age at birth (p=0.146). The survival to hospital discharge was higher (p=0.012) in the tracheal occlusion group (10/28=35.7%) than in controls (0/13=0.0%). There was a significant increase in lung area-to-head circumference ratio (p<0.001) and observed/expected lung area-to-head circumference ratio (p<0.001) between the diagnosis of the congenital diaphragmatic hernia [lung area-to-head circumference ratio: 0.80 (0.40-0.94); observed/expected lung area-to-head circumference ratio: 27.0 (15.3-45.0)], and the day before retrieval of the balloon [lung area-to-head circumference ratio: 1.2 (0.50-1.80); observed/expected lung area-to-head circumference ratio: 40.0 (17.5-60.0)]. CONCLUSIONS: There was a significant improvement in the survival rate to hospital discharge of fetuses with severe isolated left-sided congenital diaphragmatic hernia, who underwent tracheal occlusion in comparison to nonrandomized contemporaneous controls.

Palavras-chave : Hernia, diaphragmatic [congenital]; Fetoscopy [methods]; Trachea [pathology].

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