In<unk><unk><unk>  the patient might complain of difficulty in breathing (dyspnea) on assuming an upright posture. The<unk>  can be seen in inter-atrial shunting like patent foramen<unk> . In patent foramen<unk>  (PFO), the upright posture may increase shunting via the redirection of inferior vena cava (IVC) inflow towards the inter-atrial septum. The<unk>  is also seen in conditions like right pneumonectomy, enlarged aortic root and prominent Eustachian valve
Patent foramen ovale platypnoea orthodeoxia syndrome
Atrial fibrillation pulmonary diseases
Congenital heart disease cyanotic
Patent foramen ovale post-surgical complications
Atrial septal defect decompression sickness
Holiday heart syndrome
Atrial septal defect complications
Atrial septal defect pulmonary hypertension