Cardiac Platypnea-Orthodeoxia
Cardiac Platypnea-Orthodeoxia This infographic explains the mechanism behind cardiac platypnea-orthodeoxia syndrome (POS), where patients experience dyspnea and hypoxia upon standing. This condition requires both an anatomic (such as a PFO) and functional component (e.g., pulmonary hypertension). It illustrates the changes in right-to-left shunting based on body positioning (supine vs. standing)…