Key result
Chiari network entraps a large right atrial thrombus, preventing fatal massive pulmonary embolism.
Why the study?
The clinical significance of the Chiari network in the right atrium remains uncertain, with reports of both thrombus formation risk and potential protective effects against fatal pulmonary embolism.
Case Report (n=1)
Answers are grounded in this paper and cite their sources.
Highlights potential embolic protection by Chiari network on echocardiography; leaves open its prognostic role beyond this case.
The Chiari network, a net-like structure within the right atrium, has been described as an embryonic remnant of no clinical significance. Its role in facilitating paradoxical arterial embolic events and as a potential site for thrombus formation has been reported in the literature. This case illustrates the protective filter-effect of the Chiari network in a 92-year-old women who presented with the clinical signs and symptoms of acute cor pulmonale. Transthoracic echocardiography revealed a large, S-shaped, and extremely mobile right atrial thrombus within the Chiari network. Here, the authors describe how the Chiari network may have prevented the occurrence of a fatal pulmonary embolism acting as a protective factor.
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Sonaglioni et al. (2019) conducted a case report in Acute cor pulmonale, right atrial thrombus, and pulmonary embolism (n=1). Chiari network was evaluated on Clinical recovery and thrombus resolution. The Chiari network acted as a protective filter, entrapping a large right atrial thrombus and preventing a fatal massive pulmonary embolism in a 92-year-old woman.
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