Maternal hyperoxygenation as the way to treat aortic arch dimensions in fetuses with coarctation

iStock_000001495171_LargeAortic coarctation (CoA) constitutes 6-8% of all live births with hearth diseases. It can occur in various stages: from a discrete constriction of the aortic isthmus to the hypoplasia of the aortic arch. Prenatal diagnosis of CoA may result in lower mortality rate and better haemodynamic parameters (due to the early operation of CoA) by sustaining the patency of the aorta (1). The way to treat the fetus with CoA could be sustained, intermittent maternal hyperoxygenation (HO). Scientists discovered that HO can indicate the increase of left cardiac dimensions and the aortic isthmus (in fetuses with isolated CoA). Effects are mostly noticed in 4th week of treatment. The duration of the HO should dependent on left heart dimensions

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