Abstract
Pulmonary arteriovenous fistulas (PAVFs) are rare vascular malformations (PAVMs) of the lung that could lead to severe hypoxiemia due to right-to-left intrapulmonary shunts. They may occur as isolated entities or associated with Osler-Rendu-Weber syndrome or hereditary haemorrhagic telangiectasia (HHT). We study 3 patients with Rendu-Osler-Weber disease and a large arteriovenous malformation involving the left pulmonary artery. We describe the successful checking pulmonary arteriovenous fistula using echocardiographic speckle tracking and velocity vector imaging to rule out sources of cardiac shunts.
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