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Updated: Jul 30, 2026

Biochemical Measurement of Neonatal Hypoxia
Published on: August 24, 2011
Chiari Network Associated with Hypoxemia in a Neonate: Case Report and Review of the Literature
Saif Aljemmali1, John Bokowski2, Raymond Morales2
1Section of Pediatric Cardiology, Department of Pediatrics, Rush University Medical Center, Chicago, IL, USA. Saif_Aljemmali@rush.edu.
Abstract:
Chiari network is an embryonic remnant of the right sinus venosus. It appears as a thin, fenestrated membrane attached to two or more regions within the right atrium. Usually, a Chiari network has a benign course; however, rare complications associated with a Chiari network have been reported. We present the case of a neonate with hypoxemia and a Chiari network protruding into the right ventricular inflow tract associated with right-to-left shunting across the patent foramen ovale throughout the cardiac cycle. We noted spontaneous improvement after 3 weeks of life.
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