Four-dimensional ultrasonographic guidance of fetal tracheal occlusion in a congenital diaphragmatic hernia

Rodrigo Ruano, Maria Okumura, Marcelo Zugaib

Research output: Contribution to journalArticle

10 Scopus citations


Intermittent fetal tracheal occlusion is considered one actual therapeutic option for a severe isolated congenital diaphragmatic hernia (CDH). To reduce maternal risks such as maternal hemorrhage, premature rupture of membranes, and preterm labor, minimally invasive procedures with extremely thin endoscopes have been introduced. The thinnest cannula used up to now was 3.3 mm with an endoscope of 1.2 mm. This procedure is usually guided by conventional 2-dimensional ultrasonography (2DUS). Recently, 4-dimensional ultrasonography (4DUS) was used to guide invasive obstetric procedures such as amniocentesis, chorionic villus sampling, and cordocentesis, as well as cauterization of an umbilical cord in twin-twin transfusion syndrome. The advantage of 4DUS maybe related to the reduction of procedure time and the ability to use thinner endoscopes. We report another possible contribution of 4DUS in the guidance of introduction of a thinner fetoscope (1.0 mm) into the fetal oral cavity.

Original languageEnglish (US)
Pages (from-to)105-109
Number of pages5
JournalJournal of Ultrasound in Medicine
Issue number1
StatePublished - Jan 1 2007
Externally publishedYes


ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging

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