Patent foramen ovale (PFO) is a remnant of the foetal circulation resulting from incomplete
occlusion of the septum primum and septum secundum. Although prevalent in about 25% of …

Patent Foramen Ovale (PFO) is a common congenital atrial septal defect present in 20%–
35% of the general population. Although generally considered a benign anatomic variant, a …

The patent foramen ovale (PFO) is a flap or tunnel-like communication in the atrial septum
present in 20% to 34% of the adult population. In most cases, it is a benign finding and …

Abstract In Chronic Obstructive Pulmonary Disease (COPD), hypoxemia is associated with
multiple underlying mechanisms, of which one of the most significant is ventilation-perfusion …

ABSTRACT BACKGROUND Patent foramen ovale (PFO) is associated with migraine;
however, the mechanism of PFO-associated migraine is not well known; additionally …

Transoesophageal echocardiography (TOE) is a well-established and valid imaging
modality, providing more accurate and of higher quality information than transthoracic …

Over 750,000 individuals suffer from stroke annually in the United States, with 87% of these
strokes being ischemic in nature. Roughly 40% of ischemic strokes occur in individuals 60 …

Methods Between July 2017 and July 2020, 80 consecutive patients underwent
percutaneous suture-mediated PFO closure with the NobleStitch EL device (HeartStitch) at …

Platypnea-orthodeoxia syndrome (POS), first described by Burchell and colleagues 1 in
1949, is a rare condition characterized by dyspnea and hypoxemia when switching from a …

Platypnoea–orthodeoxia syndrome (POS) is an uncommon but challenging clinical
condition characterised by positional dyspnoea (platypnoea) and arterial desaturation …