In a patient there is dyspnea in upright position which is relieved in supine position, Diagnosis?

In a patient there is dyspnea in upright
position which is relieved in supine
position, Diagnosis ?
a) Tachypnea
b) Orthopnea
c) Paroxysmal nocturnal dyspnea
d) Platypnea
Correct Answer - D
Answer- D. Platypnea
Platyapnea (Orthodeoxia)
Dyspnoea when a patient moves to sitting or standing position from
a recumbent position.