<prompt> Ohodeoxia is a feature ofHepatorenal syndromeHepatopulmonary syndromeHepatic encephalopathyHepatic failure  <response>: Answer- B. Hepatopulmonary syndromeOhodeoxia refeis to aerial desaturation noted when sitting uP as opposed to lying down.Conditions associated:A Cardiac intracardiac shuntAtrial septal defect ASDPatent foramen ovale PFOPneumonectomyUsually associated with pulmonary hypeension or raised right atrial RA pressure e.g. constrictive pericarditis, cardiac tamponade.B Pulmonary intrapulmonary right-to-left shuntsHepatopulmonarysyndromePulmonary diseaseCOPDPulmonary embolismC Upper airway tumourAcute respiratory distress syndromeD MiscellaneouscausesAutonomic neuropathyAcute respiratory distress syndrome ARDS 