Platypnea may be seen in all of the following conditions, except
Answer is A (Bilateral Diaphragmatic palsy): Bilateral diaphragmatic palsy is associated with ohopnea and not platypnea. It has not been mentioned as a cause for platypnea. Severe COPD, pleural effusion and pulmonary embolism may present with either ohopnea or platypnea depending on the pathophysilogy.
Bilateral Diaphragmatic palsy
Pleural effusion
Pulmonary embolism
Cirrhosis