Platypnea means-
Platypnea is defined as dyspnea in the upright position with relief in the supine position.It is seen in left atrial myxoma or hepatopulmonary syndrome. Ref:Harrison's medicine-18th edition,page no:279
Dyspnea in the supine position and relief in upright position
Dyspnea in the upright position with relief in the supine position
Dyspena on exeion
Dyspnea waking up the patient during deep sleep
Respiratory system