A Case of Platypnea-Orthodeoxia Syndrome in a Patient with a Pulmonary Arteriovenous Fistula and a Patent Foramen Ovale

2007 ◽  
Vol 20 (4) ◽  
pp. 439.e5-439.e10 ◽  
Author(s):  
Takahiro Ohara ◽  
Satoshi Nakatani ◽  
Shuji Hashimoto ◽  
Yasuhisa Akaiwa ◽  
Satoshi Yazaki ◽  
...  
Keyword(s):  
Arteriovenous Fistula ◽  
Patent Foramen Ovale ◽  
Pulmonary Arteriovenous Fistula ◽  
Foramen Ovale

scholarly journals A Case Report on Pulmonary Arteriovenous Fistula with Recurrent Cerebral Infarction

2017 ◽  
Vol 20 (3) ◽  
pp. 098
Author(s):  
Lu He ◽  
Ge-sheng Cheng ◽  
Ya-juan Du ◽  
Yu-shun Zhang
Keyword(s):  
Case Report ◽  
Cerebral Infarction ◽  
Arteriovenous Fistula ◽  
Patent Foramen Ovale ◽  
Pulmonary Arteriovenous Fistula ◽  
Foramen Ovale ◽  
Two Factors

Patent foramen ovale (PFO) and pulmonary arteriovenous fistula (PAVF) have been both proposed as a mechanism for cerebral infarction. However, there are only a few reports on how to distinguish the role of the two factors in cerebral infarction.

scholarly journals Characteristics and analysis of right-to-left shunt-related dizziness in patients without hypoxemia

2019 ◽  
Vol 47 (7) ◽  
pp. 2921-2928
Author(s):  
Liming Cao
Keyword(s):  
Cerebral Infarction ◽  
Acute Stroke ◽  
Arteriovenous Fistula ◽  
Patent Foramen Ovale ◽  
Pulmonary Arteriovenous Fistula ◽  
Foramen Ovale ◽  
History Of

Objective This study aimed to analyze right-to-left shunt-related dizziness in three patients without hypoxemia. Methods Case 1 was a 47-year-old man with a history of cerebral infarction 8 years previously and recurrent dizziness for > 6 months. Patent foramen ovale (PFO) was found with a severe right-to-left shunt. Case 2 was a 50-year-old man with acute stroke. He had a history of repeated dizziness for > 4 years. He was diagnosed with PFO with a severe right-to-left shunt after admission. Case 3 was a 73-year-old woman with recurrent dizziness for > 10 months. Pulmonary arteriovenous fistula was diagnosed upon admission. No patients had hypoxemia. Results After percutaneous PFO occlusion in Cases 1 and 2, the patients were followed up for 6 months and 1 year, respectively. Two patients had relief of dizziness without recurrence. In Case 3, the pallor improved and the dizziness was relieved after pulmonary arteriovenous fistula embolization and did not recur over a 6-month follow-up. Conclusions There was a possible association between a severe right-to-left shunt and dizziness, although hypoxemia was absent in the cases. Intervention to eliminate a left-to-right shunt can improve dizziness in patients without hypoxemia with a severe right-to-left shunt.

scholarly journals Large paradoxical embolus through a patent foramen ovale following arteriovenous graft thrombectomy

2021 ◽  
Author(s):  
Chadi Allam ◽  
Zeina Kadri ◽  
Rabih Azar
Keyword(s):  
Arteriovenous Fistula ◽  
Left Atrium ◽  
Patent Foramen Ovale ◽  
Foramen Ovale ◽  
Peripheral Embolization ◽  
Surgical Thrombectomy ◽  
Paradoxical Embolus ◽  
The Right ◽  
Stage Renal Disease ◽  
End Stage

An 86-year-old man with end-stage renal disease on hemodialysis with an arteriovenous fistula in his left upper extremity presented to his hemodialysis session with thrombosis of his arteriovenous fistula. The patient underwent surgical thrombectomy. The patient later showed evidence of peripheral embolization and livedo reticularis. Transthoracic and transesophageal echocardiograms revealed a large thrombus (5x2 cm) in the left atrium prolapsing to the right atrium via a patent foramen ovale and another thrombus (white arrow) adherent to the apical wall of the right ventricle. The thrombus in the left atrium was intermittently crossing the mitral valve and entering the left ventricle.

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